Warein Holgado

@usal.es

Universidad de Salamanca
Grupo en Aplicaciones del Láser y Fotónica

28

Scopus Publications

377

Scholar Citations

9

Scholar h-index

9

Scholar i10-index

Scopus Publications

  • Ultrashort laser pulse characterization by means of amplitude swing
    Benjamin Alonso, Warein Holgado, Inigo J. Sola
    2021 Conference on Lasers and Electro Optics Europe and European Quantum Electronics Conference CLEO Europe Eqec 2021, 2021
    The advent of ultrafast optics and its several applications has implied the development of a wide range of pulse time domain diagnostics (autocorrelation, FROG, SPIDER, spectral interferometry, d-scan, etc.). Nowadays, the growing application of ultrafast pulses at out-of-lab environments (e.g., industrial) with noise and instability sources is a challenge, requiring a simple and robust measurement technique.
  • Generation of optical vortices with diverse topological charge via angular momentum transfer
    Ignacio Lopez-Quintas, Warein Holgado, Rokas Drevinskas, Peter G. Kazansky, Inigo J. Sola, et al.
    2021 Conference on Lasers and Electro Optics Europe and European Quantum Electronics Conference CLEO Europe Eqec 2021, 2021
    Special light beams exhibiting a structured field and carrying orbital angular momentum (OAM) appear as interesting tools in different fields such as particle manipulation, telecommunications or in several areas of light-matter interaction, including materials processing and nonlinear optics, among others. A very interesting possibility of these special light beams is the coupling of spatially varying linear polarization fields ( i.e. radial or azimuthal) with spin and orbital angular momenta. Taking advantage of this interaction, we propose an in-line method to obtain collinear optical vortices exhibiting different topological charges [1] . The proposed method can be applied to focused or collimated beams, being continuous wave or pulsed.
  • Spatiotemporal and polarization full characterization of complex ultrafast beams
    Inigo J. Sola, Ignacio Lopez-Quintas, Warein Holgado, Rokas Drevinskas, Peter G. Kazansky, et al.
    2021 Conference on Lasers and Electro Optics Europe and European Quantum Electronics Conference CLEO Europe Eqec 2021, 2021
    Over the past decades, the use of ultrafast laser beams at a highly varied range of applications (e.g., biophotonics, material science, telecommunications, physics, chemistry, etc.) has evolved, demanding more complex light structures not only in time (i.e., ultrafast pulses), but also spatiotemporally and in polarization (e.g., vector beams, time evolving polarization pulses). Therefore, the characterization of such complex structured beams has become a hot topic nowadays.
  • Ultrashort laser pulse characterization by means of amplitude swing
    Optics Infobase Conference Papers, 2021
  • Generation of optical vortices with diverse topological charge via angular momentum transfer
    Optics Infobase Conference Papers, 2021
  • Spatiotemporal and polarization full characterization of complex ultrafast beams
    Optics Infobase Conference Papers, 2021
  • Complete spatiotemporal and polarization characterization of ultrafast vector beams
    Benjamín Alonso, Ignacio Lopez-Quintas, Warein Holgado, Rokas Drevinskas, Peter G. Kazansky, et al.
    Communications Physics, 2020
    The use of structured ultrashort pulses with coupled spatiotemporal properties is emerging as a key tool for ultrafast manipulation. Ultrafast vector beams are opening exciting opportunities in different fields such as microscopy, time-resolved imaging, nonlinear optics, particle acceleration or attosecond science. Here, we implement a technique for the full characterization of structured time-dependent polarization light waveforms with spatiotemporal resolution, using a compact twofold spectral interferometer, based on in-line bulk interferometry and fibre-optic coupler assisted interferometry. We measure structured infrared femtosecond vector beams, including radially polarized beams and complex-shaped beams exhibiting both temporal and spatial evolving polarization. Our measurements confirm that light waveforms with polarization evolving at the micrometer and femtosecond scales can be achieved through the use of structured waveplates and polarization gates. This new scale of measurement achieved will open the way to predict, check and optimize applications of structured vector beams at the femtosecond and micrometer scales. While exquisite control over multiple degrees of freedom of laser beams has accelerated the use of vector beams in many areas of research, the ability to simultaneously characterise properties of interest lags behind. Here, full characterisation of spatial and temporal polarization properties of an unknown vector beam is achieved via a hybrid interferometric approach.
  • Optical vortex production mediated by azimuthal index of radial polarization
    Ignacio Lopez-Quintas, Warein Holgado, Rokas Drevinskas, Peter G Kazansky, Íñigo J Sola, et al.
    Journal of Optics United Kingdom, 2020
  • Compact in-line temporal measurement of laser pulses with amplitude swing
    Benjamín Alonso, Warein Holgado, Íñigo J. Sola
    Optics Express, 2020
    A method of ultrashort laser pulse reconstruction is presented, consisting on the analysis of the nonlinear signal obtained from the interference of the pulse with a replica of itself at a given time delay while varying the relative amplitude between the pulses. The resulting spectral traces are analyzed both analytically and numerically, showing the encoding of the input pulse spectral phase. A reconstruction algorithm is discussed and applied to extract the spectral phase and, jointly to the measured spectral amplitude, reconstructing the pulse. In order to validate the technique, an experimental in-line implementation of the characterization concept is compared to the results from a stablished technique, obtaining a good agreement at different input pulse cases. In sum, a new technique is presented, showing the capability to reconstruct a broad range of temporal pulse durations while its implementation is robust and straightforward, able to be easily adapted to diverse pulse duration and central wavelength ranges.
  • Measuring ultrashort laser pulses with amplitude swing
    Optics Infobase Conference Papers, 2020
  • Measurement of the spatiotemporal polarization of ultrafast vector beams
    Optics Infobase Conference Papers, 2020
  • Characterization of the polarization of ultrafast vector beams in the spatiotemporal domain
    Optics Infobase Conference Papers, 2020
  • Universal route to optimal few-to single-cycle pulse generation in hollow-core fiber compressors
    E. Conejero Jarque, J. San Roman, F. Silva, R. Romero, W. Holgado, et al.
    Scientific Reports, 2018
  • Strategies for achieving intense single-cycle pulses with in-line post-compression setups
    Francisco Silva, Benjamín Alonso, Warein Holgado, Rosa Romero, Julio San Román, et al.
    Optics Letters, 2018
  • Tunable high-harmonic generation by chromatic focusing of few-cycle laser pulses
    W. Holgado, C. Hernández-García, B. Alonso, M. Miranda, F. Silva, et al.
    Physical Review A, 2017
  • Self-calibrating d-scan: A versatile technique for measuring ultrashort laser pulses using an arbitrary pulse compressor
    Optics Infobase Conference Papers, 2017
  • Intuitive identification of optimal few- to single-cycle pulse postcompression dynamics in hollow-core fibers using dispersion-scan
    Optics Infobase Conference Papers, 2017
  • Continuous spectra in high-harmonic generation driven by multicycle laser pulses
    W. Holgado, C. Hernández-García, B. Alonso, M. Miranda, F. Silva, et al.
    Physical Review A, 2016
  • Single-shot implementation of dispersion-scan for the characterization of ultrashort laser pulses
    D. Fabris, W. Holgado, F. Silva, T. Witting, J. W. G. Tisch, et al.
    Optics Express, 2015
  • Carrier-envelope-phase insensitivity in high-order harmonic generation driven by few-cycle laser pulses
    C. Hernández-García, W. Holgado, L. Plaja, B. Alonso, F. Silva, et al.
    Optics Express, 2015
  • Ultrashort pulse characterisation with the d-scan technique: A single-shot implementation in the few- to single-cycle regime
    Proceedings 2015 European Conference on Lasers and Electro Optics European Quantum Electronics Conference CLEO Europe Eqec 2015, 2015
  • Ultrashort pulse characterisation with the d-scan technique: A single-shot implementation in the few- to single-cycle regime
    Optics Infobase Conference Papers, 2015
  • Generation of XUV supercontinua through control of attosecond pulse interferences
    Optics Infobase Conference Papers, 2015
  • Generation of XUV supercontinua through control of attosecond pulse interferences
    Proceedings 2015 European Conference on Lasers and Electro Optics European Quantum Electronics Conference CLEO Europe Eqec 2015, 2015
  • Temporal and spectral structure of the infrared pulse during the high order harmonic generation
    W. Holgado, B. Alonso, J. San Román, I. J. Sola
    Optics Express, 2014

RECENT SCHOLAR PUBLICATIONS

  • Spatiotemporal and polarization full characterization of complex ultrafast beams
    ÍJ Sola, I Lopez-Quintas, W Holgado, R Drevinskas, PG Kazansky, ...
    2021 Conference on Lasers and Electro-Optics Europe & European Quantum … , 2021
    2021
  • Generation of optical vortices with diverse topological charge via angular momentum transfer
    I Lopez-Quintas, W Holgado, R Drevinskas, PG Kazansky, ÍJ Sola, ...
    The European Conference on Lasers and Electro-Optics, cf_p_6 , 2021
    2021
  • Ultrashort laser pulse characterization by means of amplitude swing
    B Alonso, W Holgado, ÍJ Sola
    The European Conference on Lasers and Electro-Optics, cf_8_1 , 2021
    2021
  • Nueva metodología y recursos online para la adaptación de las prácticas de laboratorio de Óptica a escenarios docentes con diferente grado de presencialidad
    E Conejero Jarque, B Alonso Fernández, A Crego García, ...
    2021
  • Amplitude swing: measuring ultrashort laser pulses
    B Alonso, W Holgado, ÍJ Sola
    Laser Science, LM4F. 2 , 2020
    2020
  • Measurement of the spatiotemporal polarization of ultrafast vector beams
    B Alonso, I Lopez-Quintas, W Holgado, R Drevinskas, PG Kazansky, ...
    Laser Science, LW7G. 3 , 2020
    2020
  • Optical vortex production mediated by azimuthal index of radial polarization
    I Lopez-Quintas, W Holgado, R Drevinskas, PG Kazansky, ÍJ Sola, ...
    Journal of Optics 22 (9), 095402 , 2020
    2020
    Citations: 18
  • Complete spatiotemporal and polarization characterization of ultrafast vector beams
    B Alonso, I Lopez-Quintas, W Holgado, R Drevinskas, PG Kazansky, ...
    Communications Physics 3 (1), 151 , 2020
    2020
    Citations: 53
  • Characterization of the polarization of ultrafast vector beams in the spatiotemporal domain
    B Alonso, I Lopez-Quintas, W Holgado, R Drevinskas, PG Kazansky, ...
    Adaptive Optics: Analysis, Methods & Systems, JW5B. 2 , 2020
    2020
  • Measuring ultrashort laser pulses with amplitude swing
    B Alonso, W Holgado, IJ Sola
    3D Image Acquisition and Display: Technology, Perception and Applications … , 2020
    2020
  • Compact in-line temporal measurement of laser pulses with amplitude swing
    B Alonso, W Holgado, IJ Sola
    Optics Express 28 (10), 15625-15640 , 2020
    2020
    Citations: 51
  • Universal route to optimal few-to single-cycle pulse generation in hollow-core fiber compressors
    E Conejero Jarque, J San Roman, F Silva, R Romero, W Holgado, ...
    Scientific reports 8 (1), 2256 , 2018
    2018
    Citations: 52
  • Strategies for achieving intense single-cycle pulses with in-line post-compression setups
    F Silva, B Alonso, W Holgado, R Romero, JS Román, EC Jarque, H Koop, ...
    Optics letters 43 (2), 337-340 , 2018
    2018
    Citations: 65
  • Self-calibrating d-scan: a versatile technique for measuring ultrashort laser pulses using an arbitrary pulse compressor
    B Alonso, ÍJ Sola, W Holgado, H Crespo
    The European Conference on Lasers and Electro-Optics, CH_4_1 , 2017
    2017
    Citations: 3
  • Intuitive identification of optimal few-to single-cycle pulse post-compression dynamics in hollow-core fibers using dispersion-scan
    J San Roman, EC Jarque, F Silva, R Romero, W Holgado, ...
    European Quantum Electronics Conference, EE_2_6 , 2017
    2017
  • Tunable high-harmonic generation by chromatic focusing of few-cycle laser pulses
    W Holgado, C Hernández-García, B Alonso, M Miranda, F Silva, O Varela, ...
    Physical Review A 95 (6), 063823 , 2017
    2017
    Citations: 17
  • Holographic Optical Elements to Generate Achromatic
    MV Collados, ÍJ Sola, J Marín-Sáez, W Holgado, J Atencia
    Vortex Dynamics and Optical Vortices, 201 , 2017
    2017
    Citations: 1
  • Study of high-order harmonic generation effects under variations of focusing conditions of few cycle laser pulses
    W Holgado Lage
    2016
    Citations: 4
  • Continuous spectra in high-harmonic generation driven by multicycle laser pulses
    W Holgado, C Hernández-García, B Alonso, M Miranda, F Silva, L Plaja, ...
    Physical Review A 93 (1), 013816 , 2016
    2016
    Citations: 17
  • Single-shot implementation of dispersion-scan for the characterization of ultrashort laser pulses.
    W Holgado Lage, D Fabris, F Silva
    OPTICAL SOC AMER, 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA , 2015
    2015

MOST CITED SCHOLAR PUBLICATIONS

  • Strategies for achieving intense single-cycle pulses with in-line post-compression setups
    F Silva, B Alonso, W Holgado, R Romero, JS Román, EC Jarque, H Koop, ...
    Optics letters 43 (2), 337-340 , 2018
    2018
    Citations: 65
  • Single-shot implementation of dispersion-scan for the characterization of ultrashort laser pulses
    D Fabris, W Holgado, F Silva, T Witting, JWG Tisch, H Crespo
    Optics express 23 (25), 32803-32808 , 2015
    2015
    Citations: 57
  • Complete spatiotemporal and polarization characterization of ultrafast vector beams
    B Alonso, I Lopez-Quintas, W Holgado, R Drevinskas, PG Kazansky, ...
    Communications Physics 3 (1), 151 , 2020
    2020
    Citations: 53
  • Universal route to optimal few-to single-cycle pulse generation in hollow-core fiber compressors
    E Conejero Jarque, J San Roman, F Silva, R Romero, W Holgado, ...
    Scientific reports 8 (1), 2256 , 2018
    2018
    Citations: 52
  • Compact in-line temporal measurement of laser pulses with amplitude swing
    B Alonso, W Holgado, IJ Sola
    Optics Express 28 (10), 15625-15640 , 2020
    2020
    Citations: 51
  • Carrier-envelope-phase insensitivity in high-order harmonic generation driven by few-cycle laser pulses
    C Hernández-García, W Holgado, L Plaja, B Alonso, F Silva, M Miranda, ...
    Optics Express 23 (16), 21497-21508 , 2015
    2015
    Citations: 21
  • Optical vortex production mediated by azimuthal index of radial polarization
    I Lopez-Quintas, W Holgado, R Drevinskas, PG Kazansky, ÍJ Sola, ...
    Journal of Optics 22 (9), 095402 , 2020
    2020
    Citations: 18
  • Tunable high-harmonic generation by chromatic focusing of few-cycle laser pulses
    W Holgado, C Hernández-García, B Alonso, M Miranda, F Silva, O Varela, ...
    Physical Review A 95 (6), 063823 , 2017
    2017
    Citations: 17
  • Continuous spectra in high-harmonic generation driven by multicycle laser pulses
    W Holgado, C Hernández-García, B Alonso, M Miranda, F Silva, L Plaja, ...
    Physical Review A 93 (1), 013816 , 2016
    2016
    Citations: 17
  • Temporal and spectral structure of the infrared pulse during the high order harmonic generation
    W Holgado, B Alonso, J San Román, IJ Sola
    Optics Express 22 (9), 10191-10201 , 2014
    2014
    Citations: 9
  • Q-switching in a neodymium laser
    W Holgado, ÍJ Sola, EC Jarque, S Jarabo, L Roso
    European Journal of Physics 33 (2), 265 , 2012
    2012
    Citations: 8
  • Study of high-order harmonic generation effects under variations of focusing conditions of few cycle laser pulses
    W Holgado Lage
    2016
    Citations: 4
  • Self-calibrating d-scan: a versatile technique for measuring ultrashort laser pulses using an arbitrary pulse compressor
    B Alonso, ÍJ Sola, W Holgado, H Crespo
    The European Conference on Lasers and Electro-Optics, CH_4_1 , 2017
    2017
    Citations: 3
  • Holographic Optical Elements to Generate Achromatic
    MV Collados, ÍJ Sola, J Marín-Sáez, W Holgado, J Atencia
    Vortex Dynamics and Optical Vortices, 201 , 2017
    2017
    Citations: 1
  • Sources of VUV radiation by high harmonic generation and their characteristics
    IJ Sola, C Hernández-García, W Holgado, B Alonso, J San Román, ...
    2011 10th Euro-American Workshop on Information Optics, 1-2 , 2011
    2011
    Citations: 1
  • Spatiotemporal and polarization full characterization of complex ultrafast beams
    ÍJ Sola, I Lopez-Quintas, W Holgado, R Drevinskas, PG Kazansky, ...
    2021 Conference on Lasers and Electro-Optics Europe & European Quantum … , 2021
    2021
  • Generation of optical vortices with diverse topological charge via angular momentum transfer
    I Lopez-Quintas, W Holgado, R Drevinskas, PG Kazansky, ÍJ Sola, ...
    The European Conference on Lasers and Electro-Optics, cf_p_6 , 2021
    2021
  • Ultrashort laser pulse characterization by means of amplitude swing
    B Alonso, W Holgado, ÍJ Sola
    The European Conference on Lasers and Electro-Optics, cf_8_1 , 2021
    2021
  • Nueva metodología y recursos online para la adaptación de las prácticas de laboratorio de Óptica a escenarios docentes con diferente grado de presencialidad
    E Conejero Jarque, B Alonso Fernández, A Crego García, ...
    2021
  • Amplitude swing: measuring ultrashort laser pulses
    B Alonso, W Holgado, ÍJ Sola
    Laser Science, LM4F. 2 , 2020
    2020