Tayyab Imran

@eli-np.ro

Physicist/Laser System Department
ELI-NP



                       

https://researchid.co/tayyabi

Laser Physicist

RESEARCH, TEACHING, or OTHER INTERESTS

Atomic and Molecular Physics, and Optics, Atomic and Molecular Physics, and Optics, Instrumentation

47

Scopus Publications

435

Scholar Citations

11

Scholar h-index

12

Scholar i10-index

Scopus Publications

  • Optimizing multi-pass amplifier in a virtual chirped pulse amplification system
    Tayyab Imran
    IOP Publishing
    Abstract This article presents a detailed simulation study of a multi-pass amplifier in the chirped pulse amplification (CPA) system using Lab2 femtosecond virtual tools in LabVIEW to model and optimize the pulse amplification process. The virtual experimental setup includes Gaussian pulse generation, pulse stretching using an Offner-triplet stretcher, multi-pass amplification, and final pulse compression using a double-grating compressor. Various multi-pass amplifier configurations (4-pass, 8-pass, and 12-pass) are simulated, and their effects on pulse amplification, phase stability, and energy gain are analyzed. The study demonstrates that the 8-pass configuration achieves the most optimized performance in terms of energy gain, spectral and temporal stability, and pulse duration, providing a more balanced pulse compression. Diagnostics via frequency-resolved optical gating confirm these results, showing that the 8-pass Amplifier delivers shorter pulse durations (∼36 fs) and better phase control compared to the 4-pass and 12-pass amplifiers, which experience higher nonlinearity and less stability. The article underscores the critical role of compressor grating separation in minimizing pulse duration and optimizing laser performance. Using the Lab2 virtual tools in LabVIEW, this simulation provides valuable insights into the dynamic optimization of multi-pass amplifiers in CPA systems.

  • Aberration analysis of reflective and transmissive type optical spectrometer using Zemax
    Muddasir Naeem and Tayyab Imran
    Optica Publishing Group
    This study presents a detailed analysis of geometrical aberrations in reflective and transmissive optical spectrometers using Zemax optical design software. Wavefront aberration, a standard metric for assessing geometrical aberration in optical systems, is employed to evaluate performance. Spectrometers are designed in sequential mode and analyzed with the physical optics propagation (POP) algorithm. Key performance metrics, such as optical path difference (OPD), transverse ray plot, spot diagram, modulation transfer function (MTF), and geometric encircled energy, are used to assess the spectrometers. This analysis aims to study aberration effects that cause distorted and blurry spectra, ultimately impacting spectrometer accuracy and efficiency. A comparative analysis of both spectrometers in the visible range for zero and first-order diffraction grating is reported. Line and edge spread functions are simulated to examine the spectrometer’s resolution capability. This study comprehensively compares optical spectrometers, highlighting their applicability across various fields.

  • Anisotropic below bandgap harmonic generation in β-gallium oxide
    Mukhtar Hussain, André Mesquita Antunes, Gonçalo Vaz, Joana Alves, Hugo Pires, Tayyab Imran, Marco Peres, Katharina Lorenz, Encarnación Víllora, Kiyoshi Shimamura,et al.
    Optica Publishing Group
    Harmonic generation in wide bandgap semiconductors and dielectrics has attracted a surge of interest as a compact solid-state light source and as a method of mapping the band structure of the material itself. Longer driving wavelengths can support longer electron trajectories and suppress interband transitions, yielding spectra sensitive to crystal orientation and band shapes. Here, we combine a long wavelength laser to drive harmonic generation in a wide band-gap material with applications in photonics and power electronics, beta-gallium oxide (β-Ga2O3). We generate harmonics up to the ninth order (H9=3.7 eV) in air, with a ≈ 3.0 μm, 100 kHz, 40 fs mid-infrared (MIR) driving laser in (100) and (010) oriented single crystals of β-Ga2O3. We observe odd and even harmonics, spectral interference, and the strong anisotropic response of both odd and even harmonics to the incident laser polarization. Our results are explained in terms of the electronic structure and macroscopic optical properties of β-Ga2O3.

  • An experimental study of intensity-phase characterization of femtosecond laser pulses propagated through a polymethyl methacrylate
    Tayyab Imran, Muddasir Naeem, and Mukhtar Hussain
    Wiley
    AbstractThis article presents a comprehensive investigation into the intensity‐phase characteristics of ultrashort laser pulses propagated through a 10 mm thick polymethyl methacrylate (PMMA) using frequency‐resolved optical gating (FROG) and cross‐correlation frequency‐resolved optical gating (XFROG) techniques. The study focuses on discerning characteristic changes that are induced by the PMMA on the laser pulse. The results reveal that the phase variations exhibit a consistent trend and pattern. At the same time, the temporal full width at half maximum (FWHM) of both FROG and XFROG measurements displays only minor changes. The overall analysis indicates that PMMA induces no discernible modifications in the pulse, thus positioning it as a viable optical element. The analysis of reference FROG, FROG, and XFROG with PMMA is compared and discussed, showing that this analysis provides a foundation for optimizing PMMA's utilization in the optical components of ultrafast laser systems. This experimental study strongly affirms that PMMA could be a potential candidate as an optical element for laser pulses.

  • Disentangling the low-order harmonic generation from bulk and thin films
    Mukhtar Hussain, Gareth O. Williams, Tayyab Imran, Marco Peres, Katharina Lorenz, and Marta Fajardo
    Optica Publishing Group
    We have explored the process of second harmonic generation (SHG) and third harmonic generation (THG) in thin films at 800 nm driving wavelength to disentangle the bulk and thin film’s contribution of harmonics.

  • Disentangling the low-order harmonic generation from bulk and thin films
    Mukhtar Hussain, Gareth O. Williams, Tayyab Imran, Marco Peres, Katharina Lorenz, and Marta Fajardo
    Optica Publishing Group
    We have explored the process of second harmonic generation (SHG) and third harmonic generation (THG) in thin films at 800 nm driving wavelength to disentangle the bulk and thin film’s contribution of harmonics.

  • LASER OSCILLATOR WITH AUTOMATIC CONTROL FOR GENERATION OF ULTRASHORT LASER PULSES


  • Non-linear propagation effects of intense femtosecond pulses on below bandgap harmonics in solids
    M. Hussain, G. O. Williams, T. Imran, and M. Fajardo
    Informa UK Limited
    The non-linear propagation of the intense near-infrared (NIR) driving field in crystals poses a challenge and can offer an opportunity to control the spectral properties of harmonics in solids. Here, we have investigated the non-linear propagation effects in wide bandgap dielectrics such as Magnesium Oxide (MgO), Chromium (Cr) doped MgO (Cr: MgO), Sapphire (Sa) crystals, and fused silica (FS). Furthermore, we have generated second and third harmonics (TH) and measured the linear polarization dependence of harmonics in these thin solids to explore the non-linear response at a strong field. We observe spectral shifts and broadening of the driving field spectrum which is imprinted on the harmonics. We attribute these effects to the strong photoionization, generation of free-carrier density, and self-phase modulation effects. This work shows the sensitivity to control the spectral profile of harmonics by manipulating the driving field, showing the possibility of new tailored solid-state ultraviolet sources for optical diagnostics.

  • Design, Construction and Characterization of Sealed Tube Medium Power CO<inf>2</inf> Laser System
    Muddasir Naeem, Tayyab Imran, Mukhtar Hussain, and Arshad Saleem Bhatti
    MDPI AG
    A low-cost medium-power carbon dioxide (CO2) laser system is designed, constructed, and characterized to produce coherent, monochromatic laser radiation in the infrared region. The laser cavity is simulated and designed by using ZEMAX optic studio. A switch-mode high-tension pump source is designed and constructed using a flyback transformer and simulated using NI Multisim to study the voltage behavior at different node points. A prototype cooling system/chiller is designed and built using thermo-electric coolers (TEC) to remove the excess heat produced during laser action. Various parameters, such as pumping mechanism, chiller stability, efficiency, output power, and current at different applied voltages, are studied. The chiller efficiency at different output powers of the laser is analyzed, which clearly shows that the chiller’s cooling rate is good enough to compensate for the heat generated by the laser system. The center wavelength of the carbon dioxide laser is 10.6 μm with an FWHM of 1.2 nm simulated in the ZEMAX optic studio. The output beam penetration through salt rock (NaCl), wood, and acrylic sheet (PMMA) at various output powers is analyzed to measure the penetration depth rate of the CO2 laser.

  • Design Simulation and Data Analysis of an Optical Spectrometer
    Muddasir Naeem, Tayyab Imran, Mukhtar Hussain, and Arshad Saleem Bhatti
    MDPI AG
    Spectrometers have a wide range of applications ranging from optical to non-optical spectroscopy. The need for compact, portable, and user-friendly spectrometers has been a focus of attention from small laboratories to the industrial scale. Here, the Czerny Turner configuration-based optical spectrometer simulation design was carried out using ZEMAX OpticStudio. A compact and low-cost optical spectrometer in the visible range was developed by using diffraction grating as a dispersive element and a USB-type webcam CCD (charge-coupled device) as a detector instead of an expensive commercial diffraction grating and detector. Using National Instruments LabVIEW, data acquisition, processing, and display techniques were made possible. We employed different virtual images in LabVIEW programs to collect the pixel-to-pixel information and wavelength-intensity information from the image captured using the webcam CCD. Finally, we demonstrated that the OpticStudio-based spectrometer and experimental measurements with the developed spectrometer were in good agreement.

  • Design Simulation of Czerny–Turner Configuration-Based Raman Spectrometer Using Physical Optics Propagation Algorithm
    Muddasir Naeem, Noor-ul-ain Fatima, Mukhtar Hussain, Tayyab Imran, and Arshad Saleem Bhatti
    MDPI AG
    We report the design simulation of the Raman spectrometer using Zemax optical system design software. The design is based on the Czerny–Turner configuration, which includes an optical system consisting of an entrance slit, two concave mirrors, reflecting type diffraction grating and an image detector. The system’s modeling approach is suggested by introducing the corresponding relationship between detector pixels and wavelength, linear CCD receiving surface length and image surface dimension. The simulations were carried out using the POP (physical optics propagation) algorithm. Spot diagram, relative illumination, irradiance plot, modulation transfer function (MTF), geometric and encircled energy were simulated for designing the Raman spectrometer. The simulation results of the Raman spectrometer using a 527 nm wavelength laser as an excitation light source are presented. The present optical system was designed in sequential mode and a Raman spectrum was observed from 530 nm to 630 nm. The analysis shows that the system’s image efficiency was quite good, predicting that it could build an efficient and cost-effective Raman spectrometer for optical diagnostics.

  • Spectral control of high order harmonics through non-linear propagation effects
    M. Hussain, S. Kaassamani, T. Auguste, W. Boutu, D. Gauthier, M. Kholodtsova, J.-T. Gomes, L. Lavoute, D. Gaponov, N. Ducros,et al.
    AIP Publishing
    High harmonic generation (HHG) in crystals has revealed a wealth of perspectives such as all-optical mapping of the electronic band structure, ultrafast quantum information, and the creation of all-solid-state attosecond sources. Significant efforts have been made to understand the microscopic aspects of HHG in crystals, whereas the macroscopic effects, such as non-linear propagation of the driving pulse and its impact on the HHG process, are often overlooked. In this work, we study macroscopic effects by comparing two materials with distinct optical properties, silicon (Si) and zinc oxide (ZnO). By scanning the focal position of 85 fs duration and 2.123 μm wavelength pulses inside the crystals, (Z-scan) we reveal spectral shifts in the generated harmonics. We interpret the overall blueshift of the emitted harmonic spectrum as an imprint of the spectral modulation of the driving field on the high harmonics. This process is supported with numerical simulations. This study demonstrates that through manipulation of the fundamental driving field through non-linear propagation effects, precise control of the emitted HHG spectrum in solids can be realized. This method could offer a robust way to tailor HHG spectra for a range of applications.

  • Simulation and Analytical Analysis of the Blumlein Discharge Circuit for the Generation of Coherent UV Pulses in Air
    Muddasir Naeem, Rabiya Munawar, Mukhtar Hussain, Tayyab Imran, and Arshad Saleem Bhatti
    CMV Verlag
    Blumlein discharge circuit stores electrical energy in its transmission line and canreleasethisenergy within a few nanoseconds. This leads the Blumlein to discharge circuit for many applications ranging from electrical discharge in the air to generate nitrogen laser, excitation source for vaporlasers to sub-nanosecond avalanche drivers.In this letter, we have simulated the equivalent Blumlein discharge circuitin Multisimulation and compared the results with the analytical modelto have the insight ofvariations of voltage, current and power in the Blumlein circuit. The Blumlein circuit isdivided into spark gap (spark gap)and Blumlein transmission linesections to observe the voltage, current and power oscillations.The rapid oscillations of voltage across the spark gap initiatethe discharge in the long transmission lines of Blumlein thatgenerates the coherent UV pulses.This study could pave the way towards the generation of ultraviolet (UV) pulses in the air at the atmospheric pressure.

  • Controlling the non-linear optical properties of MgO by tailoring the electronic structure
    Mukhtar Hussain, Hugo Pires, Willem Boutu, Dominik Franz, Rana Nicolas, Tayyab Imran, Hamed Merdji, Marta Fajardo, and Gareth O. Williams
    Springer Science and Business Media LLC

  • Thermal lensing measurements of Ti: sapphire crystal by an optical wavefront sensor
    Mukhtar Hussain, Tayyab Imran, and Ádám Börzsönyi
    Wiley
    The effects of thermal lensing appear to be dominant in lasing crystals as the power of optical pump pulses increases. This instigates the confined heating effects in crystals. The nonuniform distributions of temperature lead to the variability of spatial refractive index in the lasing crystals and consequently, the thermal effects become prominent. The thermal effects of Brewster‐cut Ti: sapphire crystal are measured in this study. The Ti: sapphire crystal is seeded at a wavelength of 800 nm of energy ∼7 nJ and pulse duration of ∼8 fs and pumped by the 25‐ps pulses at 532 nm operating at 80 MHz. The effects of thermal lensing at ∼40 and 293 K are measured as a function of average pump power which is controlled by the automatic attenuator. The measurements of wavefronts and aberration effects are carried out by using the Shack‐Hartmann optical wavefront sensor (HASO4). This study could pave a way to suppress the thermal lensing effects at a high repetition rate laser system and to correct the wavefront aberration for ultrahigh‐intensity and metrology experiments.



  • Pulse compression of white-light continuum generated at 1053 nm in bulk sapphire: An experimental study
    T Imran, M Hussain, H Pires, and C P João
    IOP Publishing
    The white-light continuum in optical bulk material has the potential to be used as a seed pulse in optical parametric amplifiers, which entails the compression of seed pulses to temporally overlap with pump pulses. An experimental study of the compression of the white-light continuum is reported in this article. Both chirped mirror compression and prism pair compression methods are used. The 280 fs pulses centered at 1053 nm are employed to generate a white-light continuum in a bulk sapphire plate; the spectrum of a white-light continuum spans from 650 nm to 1000 nm and its second harmonic generation (SHG) is measured. The scanning SHG frequency resolved optical gating technique was used to characterize the compression of the white-light continuum. Prism pair only compression of the (650–1000) nm spectra yielded 190 fs, with chirp mirrors added after leading to 150 fs. Spectral masking of the spectrum below 850 nm inside the prism compressor resulted in a pulse duration of ~120 fs for the 850–1000 nm spectral portion of the pulses.

  • Design and characterization simulation of Ti: Sapphire-based femtosecond laser system using Lab2 tools in the NI LabVIEW
    M. Hussain and T. Imran
    Wiley
    We report on the 825‐nm center wavelength, 9.17 mJ pulse energy Ti:sapphire‐based femtosecond laser system simulation carried out by Lab2 tools in LabVIEW (National Instruments, Inc.). The design investigation and characterization of stretched, amplified and compressed pulses made by intensity module and second harmonic generation frequency‐resolved optical gating module in Lab2. The minimum pulse duration of ∼37.80 fs at the output of the compressor end obtained by simulations. The variation of pulse energy, FWHM and central wavelength versus number of passes in the amplifier are computed. The Lab2 tools help to design and characterize laser system before to set up on the optical table. The simulation results save time to calculate parameters which are essential in femtosecond laser system designing. The Lab2 simulation tools, along with financial constraints, it is easier, simple, and efficient to obtain results in short time.


  • Thermal lensing compensation in the development of 30 fs pulse duration chirped pulse amplification laser system and single-shot intensity-phase measurement
    T. Imran and M. Hussain
    Institute of Physics, Polish Academy of Sciences
    Thermal Lensing Compensation in the Development of 30 fs Pulse Duration Chirped Pulse Amplification Laser System and Single-Shot Intensity-Phase Measurement T. Imrana,∗ and M. Hussain Department of Physics and Astronomy, College of Science, King Saud University, Riyadh, 11541, Saudi Arabia GoLP/Instituto de Plasmas e Fusăo Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal

  • Computer controlled multi-shot frequency-resolved optical gating diagnostic system for femtosecond optical pulse measurement
    T. Imran, M. Hussain, and G. Figueira
    Wiley
    The control and data acquisition of homemade, second harmonic generation (SHG) multi‐shot frequency‐resolved optical gating (FROG) diagnostic technique reported here. We have designed and developed the computer controlled multi‐shot FROG diagnostic system using reflecting optics to minimize the dispersion while LabVIEW software has employed to control and data acquisition. The femtosecond laser system at laboratory for intense lasers (L2I) optimized and characterized using LabVIEW‐based FROG system. We have measured and retrieved the oscillator and compressed amplified laser pulse profiles in temporal domains having full width half maximum (FWHM) of 150 and 270 fs, respectively, and relatively small temporal phase ∼1 radians peak to peak variations with FROG error ∼0.003. The grating detuning data acquired in the form of the single data file to observe the FROG trace pattern evaluation with the change of grating positions to confirm the reliability of the LabVIEW‐based FROG system.

  • Ultrashort pulse capability at the L2I high intensity laser facility
    Gonçalo Figueira, Joana Alves, João M. Dias, Marta Fajardo, Nuno Gomes, Victor Hariton, Tayyab Imran, Celso P. João, Jayanath Koliyadu, Swen Künzel,et al.
    Cambridge University Press (CUP)
    The Laboratory for Intense Lasers (L2I) is a research centre in optics and lasers dedicated to experimental research in high intensity laser science and technology and laser plasma interaction. Currently the laboratory is undergoing an upgrade with the goal of increasing the versatility of the laser systems available to the users, as well as increasing the pulse repetition rate. In this paper we review the current status of the laser research and development programme of this facility, namely the upgraded capability and the recent progress towards the installation of an ultrashort, diode-pumped OPCPA laser system.

  • Cross-correlation frequency-resolved optical gating of white-light continuum (500-900 nm) generated in bulk media by 1053 nm laser pulses
    T Imran, M Hussain, and G Figueira
    IOP Publishing
    We have efficiently characterized the white-light continuum (WLC) generation covering 500–900 nm in a bulk sapphire plate using 280 fs pulse duration, 1053 nm center-wavelength seed laser pulses. We have acquired the well-optimized smoother region of the WLC spectrum successfully by using an FGS-900 color glass filter (Edmund Optics, Inc.). We have suppressed the spectral components below 500 nm and over 900 nm including an intense 1053 nm residual seed laser peak of the WLC spectrum. The experimental artifacts have been avoided by suppressing the intense 1053 nm seed laser. We employed the sum frequency generation cross-correlation frequency-resolved optical gating (SFG-XFROG) technique for characterization. The XFROG measurement was carried out by introducing the crystal dithering method up to 10° in 2° intervals to obtain the phase matching effectively over the filtered and smoother region of the WLC spectrum. This well-optimized WLC region covering 500–900 nm has significant importance for use as a seed pulse in an optical parametric chirped pulse amplification (OPCPA) system.


RECENT SCHOLAR PUBLICATIONS

  • Optimizing multi-pass amplifier in a virtual chirped pulse amplification system
    T Imran
    Laser Physics 35 (4), 045203 2025

  • Aberration analysis of reflective and transmissive type optical spectrometer using Zemax
    M Naeem, T Imran
    Optics Continuum 4 (1), 75-85 2025

  • ZEMAX Simulations and Experimental Validation of Laser Interferometers
    M Naeem, T Imran
    Photonics 12 (3), 206 2025

  • Anisotropic below bandgap harmonic generation in β-gallium oxide
    M Hussain, AM Antunes, G Vaz, J Alves, H Pires, T Imran, M Peres, ...
    Optics Express 32 (26), 47296-47305 2024

  • An experimental study of intensity‐phase characterization of femtosecond laser pulses propagated through a polymethyl methacrylate
    T Imran, M Naeem, M Hussain
    Microwave and Optical Technology Letters 66 (6), e34217 2024

  • Disentangling the low-order harmonic generation from bulk and thin films
    M Hussain, GO Williams, T Imran, M Peres, K Lorenz, M Fajardo
    CLEO: Fundamental Science, FW4C. 5 2024

  • Microcontroller-based thermoelectrically stabilized laser diode system
    M Naeem, ST Sahi, T Imran, M Abuzer
    Archives of Advanced Engineering Science 2 (2), 93-99 2024

  • New soliton solutions of modified (3+ 1)-D Wazwaz–Benjamin–Bona–Mahony and (2+ 1)-D cubic Klein–Gordon equations using first integral method
    S Javeed, T Imran, H Ahmad, F Tchier, YH Zhao
    Open Physics 21 (1), 20220229 2023

  • Non-linear propagation effects of intense femtosecond pulses on below bandgap harmonics in solids
    M Hussain, GO Williams, T Imran, M Fajardo
    Journal of Modern Optics 70 (3), 197-204 2023

  • Building a LASER: Air-based Nitrogen Laser Construction
    TI Rabiya Munawar, Muddasir Naeem, Mukhtar Hussain
     2023

  • Laser Technology Made Easy: Building a Sealed Tube Carbon Dioxide (CO2) Laser System from Scratch for Students and Hobbyists
    TI Muddasir Naeem
     2023

  • Design, Construction and Characterization of Sealed Tube Medium Power CO2 Laser System
    M Naeem, T Imran, M Hussain, AS Bhatti
    Instruments 6 (4), 72 2022

  • Design simulation and data analysis of an optical spectrometer
    M Naeem, T Imran, M Hussain, AS Bhatti
    Optics 3 (3), 304-312 2022

  • New soliton solutions of simplified modified Camassa Holm equation, Klein–Gordon–Zakharov equation using first integral method and exponential function method
    S Javeed, MA Abbasi, T Imran, R Fayyaz, H Ahmad, T Botmart
    Results in Physics 38, 105506 2022

  • Design and simulation of Mach-Zehnder interferometer by using Zemax optic studio
    M Naeem, T Imran
    Acta Scientific Applied Physics 2 (3) 2022

  • Design simulation of Czerny–Turner configuration-based Raman spectrometer using physical optics propagation algorithm
    M Naeem, N Fatima, M Hussain, T Imran, AS Bhatti
    Optics 3 (1), 1-7 2022

  • Design, Construction and Characterization of Sealed Tube Medium Power CO2 Laser System. Instruments 2022, 6, 72
    M Naeem, T Imran, M Hussain, AS Bhatti
    s Note: MDPI stays neutral with regard to jurisdictional claims in published 2022

  • Design Simulation and Data Analysis of an Optical Spectrometer. Optics 2022, 3, 304–312
    M Naeem, T Imran, M Hussain, AS Bhatti
    s Note: MDPI stays neu-tral with regard to jurisdictional claims in 2022

  • Development of low-cost prototype N2 laser system and laser-induced fluorescence of Pyranine
    M Naeem, T Imran, R Munawar, AS Bhatti
    Journal of Electrical and Electronic Engineering 10 (2), 47-56 2022

  • Spectral control of high order harmonics through non-linear propagation effects
    M Hussain, S Kaassamani, T Auguste, W Boutu, D Gauthier, ...
    Applied Physics Letters 119 (7) 2021

MOST CITED SCHOLAR PUBLICATIONS

  • Generation of 0.2-TW 5.5-fs optical pulses at 1 kHz using a differentially pumped hollow-fiber chirped-mirror compressor
    JH Sung, JY Park, T Imran, YS Lee, CH Nam
    Applied Physics B 82, 5-8 2006
    Citations: 73

  • Self-compression of attosecond high-order harmonic pulses
    KT Kim, KS Kang, MN Park, T Imran, G Umesh, CH Nam
    Physical review letters 99 (22), 223904 2007
    Citations: 68

  • Spectral control of high order harmonics through non-linear propagation effects
    M Hussain, S Kaassamani, T Auguste, W Boutu, D Gauthier, ...
    Applied Physics Letters 119 (7) 2021
    Citations: 29

  • 사회복지사와 타분야 원조전문직 간 대중이미지 비교연구
    강철희， 최명민
    한국사회복지학 59 (1), 171-197 2007
    Citations: 22

  • Measurement of the group-delay dispersion of femtosecond optics using white-light interferometry
    T Imran, KH Hong, TJ Yu, CH Nam
    Review of scientific instruments 75 (7), 2266-2270 2004
    Citations: 21

  • Dispersion compensation by two-stage stretching in a sub-400 fs, 1.2 mJ Yb:CaF2 amplifier
    CP Joo, H Pires, L Cardoso, T Imran, G Figueira
    Optics Express 22 (9), 10097-10104 2014
    Citations: 18

  • Intensity–phase characterization of white-light continuum generated in sapphire by 280 fs laser pulses at 1053 nm
    T Imran, G Figueira
    Journal of Optics 14 (3), 035201 2012
    Citations: 17

  • Stabilization and control of the carrier-envelope phase of high-power femtosecond laser pulses using the direct locking technique
    T Imran, YS Lee, CH Nam, KH Hong, TJ Yu, JH Sung
    Optics Express 15 (1), 104-112 2007
    Citations: 17

  • Controlling the non-linear optical properties of MgO by tailoring the electronic structure
    M Hussain, H Pires, W Boutu, D Franz, R Nicolas, T Imran, H Merdji, ...
    Applied Physics B 126, 1-7 2020
    Citations: 14

  • New soliton solutions of modified (3+ 1)-D Wazwaz–Benjamin–Bona–Mahony and (2+ 1)-D cubic Klein–Gordon equations using first integral method
    S Javeed, T Imran, H Ahmad, F Tchier, YH Zhao
    Open Physics 21 (1), 20220229 2023
    Citations: 11

  • Design simulation and data analysis of an optical spectrometer
    M Naeem, T Imran, M Hussain, AS Bhatti
    Optics 3 (3), 304-312 2022
    Citations: 11

  • Design simulation of Czerny–Turner configuration-based Raman spectrometer using physical optics propagation algorithm
    M Naeem, N Fatima, M Hussain, T Imran, AS Bhatti
    Optics 3 (1), 1-7 2022
    Citations: 11

  • Design and construction of prototype transversely excited atmospheric (TEA) nitrogen laser energized by a high voltage electrical discharge
    M Hussain, T Imran
    Journal of King Saud University-Science 27 (3), 233-238 2015
    Citations: 9

  • Efficient white‐light continuum generation in transparent solid media using∼ 250 fs, 1053 nm laser pulses
    T Imran, G Figueira
    AIP Conference Proceedings 1228 (1), 370-375 2010
    Citations: 9

  • New soliton solutions of simplified modified Camassa Holm equation, Klein–Gordon–Zakharov equation using first integral method and exponential function method
    S Javeed, MA Abbasi, T Imran, R Fayyaz, H Ahmad, T Botmart
    Results in Physics 38, 105506 2022
    Citations: 8

  • Computer controlled multi‐shot frequency‐resolved optical gating diagnostic system for femtosecond optical pulse measurement
    T Imran, M Hussain, G Figueira
    Microwave and Optical Technology Letters 59 (12), 3155-3160 2017
    Citations: 8

  • Cross-correlation frequency-resolved optical gating of white-light continuum (500–900 nm) generated in bulk media by 1053 nm laser pulses
    T Imran, M Hussain, G Figueira
    Laser Physics Letters 13 (6), 066101 2016
    Citations: 7

  • Microcontroller-based thermoelectrically stabilized laser diode system
    M Naeem, ST Sahi, T Imran, M Abuzer
    Archives of Advanced Engineering Science 2 (2), 93-99 2024
    Citations: 6

  • Design and simulation of Mach-Zehnder interferometer by using Zemax optic studio
    M Naeem, T Imran
    Acta Scientific Applied Physics 2 (3) 2022
    Citations: 6

  • An overview of LabVIEW-based f-to-2f spectral interferometer for monitoring, data acquiring and stabilizing the slow variations in carrier-envelope phase of amplified
    T Imran, M Hussain
    Optik 157, 1177-1185 2018
    Citations: 6