Amitava Bandyopadhyay
@visva-bharati.ac.in
Assistant Professor, Department of Physics, Institute of Science
Visva-Bharati University
EDUCATION
M. Sc. (Physics), Ph. D. (Science) from the University of Calcutta, Kolkata
RESEARCH, TEACHING, or OTHER INTERESTS
Atomic and Molecular Physics, and Optics, Instrumentation, Atomic and Molecular Physics, and Optics
32
Scopus Publications
238
Scholar Citations
9
Scholar h-index
8
Scholar i10-index
Scopus Publications
- Controlling optical multistability and all-optical switching in a four level Y-type atomic system
Suman Garain, Surajit Goldar, Subhasish Roy, and Amitava Bandyopadhyay
Springer Science and Business Media LLC - Electromagnetically induced transparency and Autler-Towns effect in multi-level cascade type system in <sup>133</sup>Cs
Suman Mondal and Amitava Bandyopadhyay
IOP Publishing
Abstract The probe field propagation through a twelve-level Ξ type atomic system, having two ground energy levels, four intermediate energy levels and six upper energy levels, is studied theoretically in presence of a control field connected from intermediate energy levels to upper energy levels of the 6 S 1 / 2 → 6 P 3 / 2 → 6 D 5 / 2 transitions of 133Cs atom. Optical Bloch equations (OBEs) for the system are derived by density matrix formalism and are solved numerically under Doppler free and Doppler broadened conditions. The control field can simultaneously remain resonant or nearly resonant with certain hyperfine transitions and highly detuned with respect to other transitions. Under Doppler free condition the probe absorption curve shows multiple electromagnetically induced transparency peaks (EIT) formed within largely separated Autler-Towns (A-T) peaks. The A-T peaks are formed due to the dressing of the hyperfine transitions coupled by a highly detuned control field. The EIT windows get widened with increase in the Rabi frequency of the control field. The numerical result is compared with analytically solved reduced three-level Ξ type system. At room temperature the multiple transparency peaks get masked due to thermal averaging and an overall transparency like feature appears in the simulated Doppler broadened probe absorption curve. - Controlling optical bistability, multistability and all-optical switching through multi-photon excitation process
Suman Garain, Suman Mondal, Kalan Mal, Subhasish Roy, and Amitava Bandyopadhyay
IOP Publishing
Abstract We present a theoretical study on optical bistability (OB), optical multistability (OM) and tunable all-optical switching in a four-level cascade type atomic system. The density matrix formalism is used to find out the response of the probe laser field. We explore OB and OM under unidirectional optical ring cavity configuration. A comparison between the effects of electromagnetically induced transparency and electromagnetically induced absorption windows on OB is presented. The threshold of OB and the hysteresis width can be tuned effectively by adjusting the applied coherent fields. A transition from OB to OM and vice-versa can be easily achieved by tuning the field parameters and the atomic cooperation parameter. Dynamic control of the probe laser propagating through the medium has been investigated. We also demonstrate conversion of a continuous wave input probe field into output switched pulse. The ON/OFF time of the switched probe pulse can also be controlled by tuning the field parameters. - Simple high-precision diode laser system with digital control
Suman Garain, Amitava Bandyopadhyay, Dipankar Bhattacharyya, Suman Mondal, and Subhasish Roy
Optica Publishing Group
A simple wavelength tunable diode laser system has been designed and fabricated for laboratory use. Both the current and temperature controllers are based on an AVR microcontroller, and the experimental controls have been implemented with the help of daemon programs running in a message passing interface environment, which allows the users to run the control server and client programs on separate computers. The stability of the controllers has been tested using a distributed feedback (DFB) diode laser with a central wavelength of 852.3 nm. A noise spectral analysis of the current controller with and without the use of the diode laser as the active load has been demonstrated. The absorption spectra of 6 S 1 / 2 → 6 P 3 / 2 transition of 133 C s , as recorded by using the DFB laser system developed, are also presented. - Electromagnetically induced transparency, narrow absorption and transient response in a three-photon excitation process
Suman Mondal, Dipanwita Das, Parantap Dey, Dipankar Bhattacharyya, and Amitava Bandyopadhyay
Elsevier BV - Microwave assisted gain in inverted-Y type atomic system
Suman Mondal, Kalan Mal, Dipankar Bhattacharyya, Nikhil Pal, and Amitava Bandyopadhyay
Elsevier BV - Formation of electromagnetically induced transparency and two-photon absorption in close and open multi-level ladder systems
Suman Mondal, Sushree Subhadarshinee Sahoo, Ashok Kumar Mohapatra, and Amitava Bandyopadhyay
Elsevier BV - Atom localization in cascade type system
Kalan Mal, Suman Mondal, Dipankar Bhattacharyya, and Amitava Bandyopadhyay
IOP Publishing
Abstract A three-level cascade type system is subjected to a standing wave (SW) field acting between the ground energy level and the intermediate energy level of the system and the probe field scans the uppermost energy level from the intermediate energy level. Optical Bloch equations (OBE) for this three-level system are derived from the Liouville equation (Master equation) where the decay terms are added phenomenologically. These OBEs are solved analytically under steady state condition by using weak probe approximation. Under doppler free condition precession of localization was controlled by tuning the SW rabi frequency and relative orientation of the applied fields. - Electromagnetically induced transparency in Y-type atomic system
Kalan Mal, Khairul Islam, Suman Mondal, Dipankar Bhattacharyya, and Amitava Bandyopadhyay
IOP Publishing
Abstract Probe field propagation through a four-level Y-type system is studied analytically under steady state condition by using density matrix formulation. The probe field scans the intermediate state from the ground state whereas two other coherent radiation fields, namely the control field and the coupling field, are set to couple two different excited states from the intermediate energy level. Under Doppler free condition, simulated probe absorption shows single or twin EIT windows depending on whether the control and the coupling field are on-resonant or detuned. Under Doppler broadened condition, the residual Doppler averaging due to wavelength mismatch between the probe field and the control field as well as that between the probe field and the coupling field plays significant role in the formation of transparency window. - Electromagnetically induced transparency and electromagnetically induced absorption in Y-type system
Kalan Mal, Khairul Islam, Suman Mondal, Dipankar Bhattacharyya, and Amitava Bandyopadhyay
IOP Publishing
The propagation of a probe field through a four-level Y-type atomic system is described in the presence of two additional coherent radiation fields, namely, the control field and the coupling field. An expression for the probe response is derived analytically from the optical Bloch equations under steady state condition to study the absorptive properties of the system under probe field propagation through an ensemble of stationary atoms as well as in a Doppler broadened atomic vapor medium. The most striking result is the conversion of electromagnetically induced transparency (EIT) into electromagnetically induced absorption (EIA) as we start switching from weak probe regime to strong probe regime. The dependence of this conversion on residual Doppler averaging due to wavelength mismatch is also shown by choosing the coupling transition as a Rydberg transition. - An optical narrowband switch between subluminal and superluminal light propagation in the inverted-Y configuration
Suman Mondal, Arindam Ghosh, Khairul Islam, and Amitava Bandyopadhyay
IOP Publishing
The propagation of a weak probe field through a four-level inverted-Y type atomic system driven by two additional coherent fields, namely the control field and the repump field, is studied. The simulated probe absorption shows that electromagnetically induced transparency and the line shape of the transparency window under a Doppler-broadened condition are dependent on the residual Doppler averaging due to the wavelength mismatch between the control and probe fields. For 87Rb the probe propagation changes from subluminal on-resonance under a Doppler-free condition to superluminal on-resonance under a Doppler-broadened condition. For both 87Rb and 133Cs, the narrow subluminal window occurring in the group index profile in a Doppler-free environment offers an excellent delay bandwidth for probe field propagation. Under this condition, the order of the delay in probe field propagation can be as long as a few hundred µs and seems quite promising in the field of optical delay generation and light storage. The analysis shows that the residual Doppler averaging has a greater impact on the switching window under the variation of the Rabi frequency of the control field as compared to that of the repump field. - Optical switching phenomenon in ladder type atomic system under varying wavelength mismatching effect with one due to a Rydberg transition
Suman Mondal, Arindam Ghosh, Khairul Islam, and Amitava Bandyopadhyay
Elsevier BV - Electromagnetically induced transparency in a six-level inverted-Y type atomic system using Rydberg state
Arindam Ghosh, Suman Mondal, Khairul Islam, and Amitava Bandyopadhyay
Author(s)
The absorption features of a probe field propagating through a six-level inverted-Y type atomic system in presence of two additional coherent fields are investigated under both Doppler-free and Doppler-broadened conditions resembling the 87Rb 5S1⁄2 → 5P3⁄2 → 44D5⁄2 (Tr-I) through numerical simulation. A comparative study in the probe absorption is also made with the 87Rb 5S1⁄2 → 5P3⁄2 → 7S1⁄2 transition (Tr-II). Under thermal averaging five velocity selective optically pumped absorption peaks (VSOPAP) appear for both the transitions (Tr-I and Tr-II). An interesting feature noticed in the simulated absorption profile is that under thermal averaging we get two extra electromagnetically induced transparency (EIT) dips for Tr-I compared to Tr-II where only two EIT dips are noticed.The absorption features of a probe field propagating through a six-level inverted-Y type atomic system in presence of two additional coherent fields are investigated under both Doppler-free and Doppler-broadened conditions resembling the 87Rb 5S1⁄2 → 5P3⁄2 → 44D5⁄2 (Tr-I) through numerical simulation. A comparative study in the probe absorption is also made with the 87Rb 5S1⁄2 → 5P3⁄2 → 7S1⁄2 transition (Tr-II). Under thermal averaging five velocity selective optically pumped absorption peaks (VSOPAP) appear for both the transitions (Tr-I and Tr-II). An interesting feature noticed in the simulated absorption profile is that under thermal averaging we get two extra electromagnetically induced transparency (EIT) dips for Tr-I compared to Tr-II where only two EIT dips are noticed. - Wavelength mismatching effects on susceptibility and optical switching in an inverted-Y type atomic system
Suman Mondal, Arindam Ghosh, Khairul Islam, Dipankar Bhattacharyya, and Amitava Bandyopadhyay
Author(s) - Effect of residual Doppler averaging on the probe absorption in cascade type system: A comparative study
Suman Mondal, Arindam Ghosh, Khairul Islam, Dipankar Bhattacharyya, and Amitava Bandyopadhyay
IOP Publishing
Effect of residual Doppler averaging on the probe absorption in an alkali vapor medium in the presence of a coherent pump beam is studied analytically for the Ξ type system. A coherent probe field is assumed to connect the ground level with the intermediate level whereas a coherent control beam is supposed to act between the intermediate energy level and the uppermost level. Optical Bloch equations (OBE) for a three-level Ξ type system and a four-level Ξ type system are derived by using density matrix formalism. These equations are solved by an analytic method to determine the probe response, which not only depends on the wavelength difference between the control (pump) field and the probe field but shows substantially different features depending on whether the wavelength of the control field is greater than that of the probe field or the reverse. The effect of temperature on probe response is also shown. Enhancement in probe absorption and additional features are noticed under a strong probe limit at room temperature. The four-level Ξ type system has two ground levels and this leads to substantial modification in the simulated probe absorption as compared to the three-level system. - A study on electromagnetically induced transparency and velocity selective optically pumped absorption in an eight-level inverted Y-type atomic system
Arindam Ghosh, Khairul Islam, Suman Mondal, Dipankar Bhattacharyya, Nikhil Pal, and Amitava Bandyopadhyay
IOP Publishing
Coherent probe field (LA) propagation through an eight-level inverted Y-type atomic system, in the presence of two additional coherent radiation fields termed the field LC (control or pump field) and the field LB (repump field), is investigated by using the parameters of 87Rb 5 S 1 / 2 → 5 P 3 / 2 → 7 S 1 / 2 transitions. The system has two ground energy levels, four intermediate energy levels, and two uppermost energy levels. A theoretical model based on the density matrix method is used for numerical simulation of the probe response under different conditions. Simulated probe absorption spectra under a Doppler-free condition as well as under thermal averaging exhibit electromagnetically induced transparency (EIT). The position and line shape of this EIT profile change with different detunings of the control and repump fields. When the three coherent fields share a common level, a funnel-like EIT window appears in the simulated probe absorption curve. Velocity selective optically pumped absorption peaks are seen in the simulated probe response at room temperature. - Splitting of electromagnetically induced absorption signal in a five-level V-type atomic system
Khairul Islam, Amitava Bandyopadhyay, Bankim Chandra Das, Satyajit Saha, Sankar De, and Dipankar Bhattacharyya
The Optical Society
Electromagnetically induced absorption (EIA) and velocity-selective transparency peaks are observed in the probe absorption signal of V-type five-level atomic systems interacting with copropagating control and probe fields. At high control beam intensity, a splitting of EIA occurs. The experiment shows similar results for both Rb87 and Rb85 isotopes at room temperature. A density matrix-based theoretical model of this five-level system has been developed and solved numerically under steady-state condition. The simulated spectra agree quite well with the experimental findings. An analytic expression for the probe response is derived and used to find out the causes for the splitting of EIA. - Study on probe field propagation in the presence of control and coupling fields through a four-level N-type atomic system
Khairul Islam, Dipankar Bhattacharyya, Arindam Ghosh, Debasish Biswas, and Amitava Bandyopadhyay
IOP Publishing
The absorption features of a probe field propagating through a four-level N-type atomic system in the presence of two coherent radiation fields is studied analytically by using a density matrix formulation. The system has two ground levels and two excited levels. A weak probe laser couples the upper ground level to the lower excited level whereas a strong control field connects the lower ground level to the lower excited level. The coupling field acts between the upper ground level and the upper excited level. The transition parameters of the 87Rb D1 line have been used to simulate the probe response. The simulated probe absorption shows a gain-like structure depending on the relative field intensities. The spectral features of the probe response exhibit substantial differences under thermal averaging as compared to a Doppler-free condition. The splitting of simulated probe absorption can be explained by the dressed state model. Electromagnetically induced absorption (EIA) is observed in the simulated probe response curve when the spontaneous decay of the population from the uppermost excited state to the lower ground state is absent. - Revisiting the four-level inverted-Y system under both Doppler-free and Doppler-broadened conditions: An analytical approach
Arindam Ghosh, Khairul Islam, Dipankar Bhattacharyya, and Amitava Bandyopadhyay
IOP Publishing
We report the occurrence of electromagnetically induced transparency (EIT) in the simulated probe response signal for a four-level inverted-Y type system that is being acted upon by a weak coherent probe field, a strong coherent pump field and a coherent repump field. There are two ground energy levels, one intermediate energy level and one uppermost energy level. The weak probe field couples the lowest ground level to the intermediate level whereas the repump field connects the other ground level with the intermediate level. The strong control field couples the intermediate level with the uppermost energy level, thereby forming an inverted-Y type system. The density matrix based theoretical model has been developed and solved analytically for this four-level system and the probe response signal has been simulated at different values of the control and repump Rabi frequencies, control and repump frequency detunings and under both Doppler-free and Doppler-broadened conditions using the parameters of 87Rb D2 transition. Extremely low line width (few tens of kHz) for the EIT signal has been noticed under thermal averaging for copropagating probe, control and repump field configuration. The EIT signal is found to be immune to the variation in the control Rabi frequency. - Observation of electromagnetically induced transparency in six-level Rb atoms and theoretical simulation of the observed spectra
Dipankar Bhattacharyya, Arindam Ghosh, Amitava Bandyopadhyay, Satyajit Saha, and Sankar De
IOP Publishing
We report the observation of electromagnetically induced transparency (EIT) in a six-level Λ-type system in atomic Rb vapor containing both 87Rb and 85Rb. The experimental observation includes five velocity selective optically pumped (VSOP) absorption dips for both 87Rb and 85Rb. The EIT signal appears on the background of one such VSOP absorption dips. The measured EIT linewidth ( Γ t ?> ) shows sub-natural ( Γ t ?> < Γ ?> ) values for both lower and higher values of pump Rabi-frequencies. The density matrix based theoretical model for the six-level system is developed and solved numerically by taking into account the Doppler broadening. A complete analytical solution (non perturbative) for a three level Λ-type system has been obtained and compared with the experimentally observed sub-natural EIT linewidth. The simulated spectra are in good agreement with the experimental findings. - Measurement and analysis of rotational lines in the (2ν<inf>1</inf> + ν<inf>2</inf> + ν<inf>3</inf>) overtone band of H<inf>2</inf>O perturbed by CO<inf>2</inf> using near infrared diode laser spectroscopy
Priyanka Poddar, Amitava Bandyopadhyay, Debasish Biswas, Biswajit Ray, and Pradip N. Ghosh
Elsevier BV - Line shape measurement of overtone transitions of water vapor broadened by carbon dioxide
P. Poddar, A. Bandyopadhyay, D. Biswas, B. Ray, P. N. Ghosh, V. K. Vaidyan, and V. S. Jayakumar
AIP
A high resolution near infrared diode laser spectrometer has been used to study the CO2 broadened line shape of rovibrational transition of water vapor, belonging to the (211)←(000) overtone band in the 820 nm wavelength region. A balanced detector is used to improve the S/N ratio of the spectra. The wavelength modulation technique has been adopted for in‐phase detection of absorption profiles with high sensitivity. The rovibrational transition at 12218.8296 cm−1 is non‐linear least square fitted with Voigt profile. From the fitting process the pressure broadening coefficient and line strength value are extracted. The line strength value obtained in this work is compared with the HITRAN database of the water vapor. - Laser frequency stabilization for atom cooling and magnetic-field compression of the trap
S. Chakrabarti, A. Ray, A. Bandyopadhyay, D. Bhattacharyya, B. Ray, B. N. Jagatap, K. G. Manohar, and P. N. Ghosh
Pleiades Publishing Ltd - Velocity dependent pump-probe spectroscopy for a five-level system: An application to Rb D<inf>2</inf> transitions
Dipankar Bhattacharyya, Amitava Bandyopadhyay, Shrabana Chakrabarti, Biswajit Ray, and Pradip N. Ghosh
Elsevier BV - Diode laser spectroscopic measurements and theoretical calculations of line parameters of nitrogen-broadened water vapor overtone transitions in the 818-834 nm wavelength region
Amitava Bandyopadhyay, Biswajit Ray, Pradip N. Ghosh, Danielle L. Niles, and Robert R. Gamache
Elsevier BV
RECENT SCHOLAR PUBLICATIONS
- Controlling optical multistability and all-optical switching in a four level Y-type atomic system
S Garain, S Goldar, S Roy, A Bandyopadhyay
Indian Journal of Physics, 1-11 2024 - Electromagnetically induced transparency and Autler-Towns effect in multi-level cascade type system in 133Cs
S Mondal, A Bandyopadhyay
Physica Scripta 98 (11), 115508 2023 - Controlling optical bistability, multistability and all-optical switching through multi-photon excitation process
S Garain, S Mondal, K Mal, S Roy, A Bandyopadhyay
Journal of Physics B: Atomic, Molecular and Optical Physics 2023 - Simple high-precision diode laser system with digital control
S Garain, A Bandyopadhyay, D Bhattacharyya, S Mondal, S Roy
Applied Optics 62 (4), 956-963 2023 - Electromagnetically induced transparency, narrow absorption and transient response in a three-photon excitation process
S Mondal, D Das, P Dey, D Bhattacharyya, A Bandyopadhyay
Optik 265, 169410 2022 - Microwave assisted gain in inverted-Y type atomic system
S Mondal, K Mal, D Bhattacharyya, N Pal, A Bandyopadhyay
Optik 226, 165962 2021 - Atom localization in cascade type system
K Mal, S Mondal, D Bhattacharyya, A Bandyopadhyay
Journal of Physics: Conference Series 1579 (1), 012013 2020 - Electromagnetically induced transparency in Y-type atomic system
K Mal, K Islam, S Mondal, D Bhattacharyya, A Bandyopadhyay
Journal of Physics: Conference Series 1579 (1), 012002 2020 - Electromagnetically induced transparency and electromagnetically induced absorption in Y-type system
K Mal, K Islam, S Mondal, D Bhattacharyya, A Bandyopadhyay
Chinese Physics B 29 (5), 054211 2020 - Formation of electromagnetically induced transparency and two-photon absorption in close and open multi-level ladder systems
AB Suman Mondal, Sushree Subhadarshinee Sahoo, Ashok Kumar Mohapatra
Optics Communications 472, 126036 2020 - Atom localization in cascade type system
A Bandyopadhyay, K Mal, S Mondal
IOP Publishing 2020 - Electromagnetically induced transparency in Y-type atomic system
A Bandyopadhyay, K Mal, S Mondal, K Islam
IOP Publishing 2020 - Optical switching phenomenon in ladder type atomic system under varying wavelength mismatching effect with one due to a Rydberg transition
S Mondal, A Ghosh, K Islam, A Bandyopadhyay
Optics Communications 435, 378-384 2019 - Electromagnetically induced transparency in a six-level inverted-Y type atomic system using Rydberg state
A Bandyopadhyay, A Ghosh, S Mondal, K Islam
AIP Publishing. 2019 - Wavelength mismatching effects on susceptibility and optical switching in an inverted-Y type atomic system
A Bandyopadhyay, S Mondal, A Ghosh, K Islam
AIP Publishing. 2019 - Electromagnetically induced transparency in a six-level inverted-Y type atomic system using Rydberg state
A Ghosh, S Mondal, K Islam, A Bandyopadhyay
AIP Conference Proceedings 2072 (1), 020002 2019 - Wavelength mismatching effects on susceptibility and optical switching in an inverted-Y type atomic system
S Mondal, A Ghosh, K Islam, D Bhattacharyya, A Bandyopadhyay
AIP Conference Proceedings 2072 (1), 020017 2019 - An optical narrowband switch between subluminal and superluminal light propagation in the inverted-Y configuration
AB Suman Mondal, Arindam Ghosh, Khairul Islam
Laser Physics 29 (7), 075204 2019 - Effect of residual Doppler averaging on the probe absorption in cascade type system: A comparative study
S Mondal, A Ghosh, K Islam, D Bhattacharyya, A Bandyopadhyay
Chinese Physics B 27 (9), 094204 2018 - Effect of coherent radiation fields on the transparency of alkali atomic vapour medium
A Bandyopadhyay
Department of Physics, Institute of Science, Visva-Bharati 2018
MOST CITED SCHOLAR PUBLICATIONS
- A simple scanning semiconductor diode laser source and its application in wavelength modulation spectroscopy around 825nm
A Ray, A Bandyopadhyay, S De, B Ray, PN Ghosh
Optics & Laser Technology 39 (2), 359-367 2007
Citations: 32 - Line-shape study of water vapour by tunable diode laser spectrometer in the 822-832 nm wavelength region
A Ray, A Bandyopadhyay, B Ray, D Biswas, PN Ghosh
Applied Physics B 79 (7), 915-921 2004
Citations: 23 - Observation of electromagnetically induced transparency in six-level Rb atoms and theoretical simulation of the observed spectra
D Bhattacharyya, A Ghosh, A Bandyopadhyay, S Saha, S De
Journal of Physics B: Atomic, Molecular and Optical Physics 48 (17), 175503 2015
Citations: 17 - Velocity dependent pump-probe spectroscopy for a five-level system: an application to Rb D2 transitions
D Bhattacharyya, A Bandyopadhyay, S Chakrabarti, B Ray, PN Ghosh
Chemical physics letters 440 (1-3), 24-30 2007
Citations: 16 - Revisiting the four-level inverted-Y system under both Doppler-free and Doppler-broadened conditions: an analytical approach
A Ghosh, K Islam, D Bhattacharyya, A Bandyopadhyay
Journal of Physics B: Atomic, Molecular and Optical Physics 49 (19), 195401 2016
Citations: 15 - Diode laser spectroscopic measurements and theoretical calculations of line parameters of nitrogen-broadened water vapor overtone transitions in the 818–834nm wavelength region
A Bandyopadhyay, B Ray, PN Ghosh, DL Niles, RR Gamache
Journal of Molecular Spectroscopy 242 (1), 10-16 2007
Citations: 14 - A study on electromagnetically induced transparency and velocity selective optically pumped absorption in an eight-level inverted Y-type atomic system
A Ghosh, K Islam, S Mondal, D Bhattacharyya, N Pal, A Bandyopadhyay
Journal of Physics B: Atomic, Molecular and Optical Physics 51 (14), 145501 2018
Citations: 12 - Velocity-selective resonance dips in the probe absorption spectra of Rb D2 transitions induced by a pump laser
S Chakrabarti, A Pradhan, A Bandyopadhyay, A Ray, B Ray, N Kar, ...
Chemical physics letters 399 (1-3), 120-124 2004
Citations: 11 - Splitting of electromagnetically induced absorption signal in a five-level V-type atomic system
K Islam, A Bandyopadhyay, BC Das, S Saha, S De, D Bhattacharyya
JOSA B 34 (12), 2550-2557 2017
Citations: 9 - Study on probe field propagation in the presence of control and coupling fields through a four-level N-type atomic system
K Islam, D Bhattacharyya, A Ghosh, D Biswas, A Bandyopadhyay
Journal of Physics B: Atomic, Molecular and Optical Physics 50 (21), 215401 2017
Citations: 9 - Lineshape study of argon broadened water vapour overtone transitions in the 818–834 nm wavelength region
A Bandyopadhyay, A Ray, B Ray, PN Ghosh
Journal of Molecular Spectroscopy 234 (1), 93-98 2005
Citations: 9 - Electromagnetically induced transparency and electromagnetically induced absorption in Y-type system
K Mal, K Islam, S Mondal, D Bhattacharyya, A Bandyopadhyay
Chinese Physics B 29 (5), 054211 2020
Citations: 8 - Optical switching phenomenon in ladder type atomic system under varying wavelength mismatching effect with one due to a Rydberg transition
S Mondal, A Ghosh, K Islam, A Bandyopadhyay
Optics Communications 435, 378-384 2019
Citations: 8 - An optical narrowband switch between subluminal and superluminal light propagation in the inverted-Y configuration
AB Suman Mondal, Arindam Ghosh, Khairul Islam
Laser Physics 29 (7), 075204 2019
Citations: 7 - Measurement and analysis of rotational lines in the (2ν1+ ν2+ ν3) overtone band of H2O perturbed by CO2 using near infrared diode laser spectroscopy
P Poddar, A Bandyopadhyay, D Biswas, B Ray, PN Ghosh
Chemical Physics Letters 469 (1-3), 52-56 2009
Citations: 7 - Formation of electromagnetically induced transparency and two-photon absorption in close and open multi-level ladder systems
AB Suman Mondal, Sushree Subhadarshinee Sahoo, Ashok Kumar Mohapatra
Optics Communications 472, 126036 2020
Citations: 6 - Effect of residual Doppler averaging on the probe absorption in cascade type system: A comparative study
S Mondal, A Ghosh, K Islam, D Bhattacharyya, A Bandyopadhyay
Chinese Physics B 27 (9), 094204 2018
Citations: 6 - On line shape measurement and simulation of rovibrational transitions of water vapour in the near infrared region
A Bandyopadhyay, A Ray, B Ray, PN Ghosh
Chemical physics letters 401 (1-3), 135-139 2005
Citations: 6 - Frequency stabilisation of a GaAlAs semiconductor diode laser to an absorption line of water vapour at 822 nm
A Ray, A Bandyopadhyay, B Ray, PN Ghosh
IEE Proceedings Optoelectronics 151 (6), 490-495 2004
Citations: 6 - Microwave assisted gain in inverted-Y type atomic system
S Mondal, K Mal, D Bhattacharyya, N Pal, A Bandyopadhyay
Optik 226, 165962 2021
Citations: 3