Prof. Javier Rodríguez Vázquez de Aldana Profile

Prof. Javier Rodríguez Vázquez de Aldana

Professor at Univ de Salamanca

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Author

Publications (14)

Proceedings Article | 26 August 2024 Presentation + Paper

Towards a mid-infrared SWIFTS: L-band integrated high resolution spectrometer

Myriam Bonduelle, Guillermo Martin, Salma Baccar, Noémie Mestre, Alain Morand, Víctor Arroyo Heras, Javier Vázquez de Aldana, Carolina Romero, Nadège Courjal, Roland Salut, Laurent Robert

Proceedings Volume 13100, 131002J (2024) https://doi.org/10.1117/12.3018829

KEYWORDS: Astrophotonics, Antennas, Waveguides, Interferograms, Spectroscopy, Mid infrared, Optical path differences, Refractive index, Lithium niobate, L band, Fourier transforms

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This work aims to present the first results towards a mid-infrared (L-band : 3.4 μm - 4.1 μm) high resolution integrated spectrometer, based on the Gabor approach of SWIFTS (Stationary Wave Integrated Fourier Transform Spectrometer). In this configuration, a stationary wave is obtained by injecting the light from the source on both sides of a channel waveguide. The centre of the coherent interferogram is obtained in the middle of the waveguide, allowing for full characterisation of the source, and all differential dispersion effects between the two optical paths. The stationary wave is sampled by nano-scattering centres (= nanogrooves) placed on top of the waveguide. They extract the interferogram, and the spectrum of the source is retrieved through a Fourier Transform. In the mid-infrared, the detection area of the detectors is buried : using only one groove per scattering centre leads to a diffracted signal too wide and causes pixel crosstalk. Several grooves per scattering centres have therefore been implemented, as this configuration creates a small diffraction grating, and reduces the angular divergence of the flux. In addition to avoiding crosstalk, this allows to extract more flux per scattering centre, thus increasing the signal to noise ratio. Our samples are made in Lithium Niobate (LiNbO3), an electro-optic crystal, using two technologies. First, Direct Laser Writing for both the waveguides and the nanogrooves, and secondly Titane diffusion for the waveguides and Focused Ion Beam for the nanogrooves. Because of the electrooptic properties of Lithium Niobate, applying an electric field ramp modulation will change the refractive index of the material, allowing to finely scan the fringe packet under the sampling centres, thus increasing the sampling rate of the interferogram by temporal multiplexing. We demonstrate that our waveguides are fully functional and have a correct transmission rate, and that our antennas are extracting the stationary wave as expected, in both technologies.

Proceedings Article | 29 August 2022 Poster + Paper

Development of mid-IR waveguides to implement high resolution spectrometers in integrated optics

Myriam Bonduelle, Guillermo Martin, Alain Morand, Javier R. Vazquez de Aldana, Carolina Romero Vázquez, Nadège Courjal, Antoine Coste

Proceedings Volume 12188, 121885R (2022) https://doi.org/10.1117/12.2629859

KEYWORDS: Antennas, Waveguides, Sensors, Mid-IR, Spectrometers, Scattering, Electro optics, Lithium niobate, L band, Refractive index

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Proceedings Article | 10 July 2018 Paper

High resolution and wideband integrated optics infrared stationary-wave spectrometer fabricated by ultrafast laser inscription

I. Heras, J. Vázquez de Aldana, A. Morand, G. Martin

Proceedings Volume 10706, 107063A (2018) https://doi.org/10.1117/12.2311440

KEYWORDS: Waveguides, Sensors, Spectroscopy, Channel waveguides, Infrared spectroscopy, Scattering, Integrated optics, Spectral resolution, Ultrafast lasers, Mirrors

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Proceedings Article | 15 February 2018 Paper

Passive Q-switching of femtosecond-laser-written Tm:KLu(WO4)2 waveguide lasers by graphene and MoS2 saturable absorbers

Esrom Kifle, Xavier Mateos, Javier Rodríguez Vázquez de Aldana, Airan Ródenas, Pavel Loiko, Viktor Zakharov, Andrey Veniaminov, Haohai Yu, Huaijin Zhang, Yanxue Chen, Magdalena Aguiló, Francesc Díaz, Uwe Griebner, Valentin Petrov

Proceedings Volume 10511, 105110A (2018) https://doi.org/10.1117/12.2291098

KEYWORDS: Graphene, Molybdenum, Crystals, Waveguide lasers, Channel waveguides, Thulium, Waveguides, Q switches, Cladding, Laser crystals

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Proceedings Article | 26 July 2016 Paper

Recent results on photonic devices made by laser writing: 3D 3T near IR waveguides, mid-IR spectrometers and electro-optic beam combiners

G. Martin, J. Vázquez de Aldana, A. Rodenas, C. d'Amico, R. Stoian

Proceedings Volume 9907, 990739 (2016) https://doi.org/10.1117/12.2233198

KEYWORDS: Waveguides, Electro optics, Mid-IR, Spectrometers, Integrated optics, Channel waveguides, Interferometry, Lithium niobate, Polarization, Mirrors

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SPIE Journal Paper | 21 September 2015

Dual-line optical waveguides in Cu:KNSBN crystal fabricated by direct femtosecond laser writing

Weijie Nie, Javier Vázquez de Aldana, Feng Chen

OE, Vol. 54, Issue 09, 097106, (September 2015) https://doi.org/10.1117/12.10.1117/1.OE.54.9.097106

KEYWORDS: Waveguides, Crystals, Femtosecond phenomena, Refractive index, Laser crystals, Polarization, Near field, Photonic crystals, Micro raman spectroscopy, Magnetism

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Proceedings Article | 14 July 2015 Paper

Three-dimensional femtosecond laser micromachining of dielectric crystals for photonic waveguiding applications

Feng Chen, Javier Vázquez de Aldana

Proceedings Volume 9532, 95320M (2015) https://doi.org/10.1117/12.2182861

KEYWORDS: Crystals, Waveguides, Laser crystals, Photonic crystals, Dielectrics, Beam splitters, Femtosecond phenomena, Refractive index, Cladding, 3D equipment

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Proceedings Article | 14 July 2015 Paper

A novel micro-processing of waveguide coupler in birefringent crystal by twin tracks of single-scan femtosecond laser writing

Chen Cheng, J. Vázquez de Aldana, Feng Chen

Proceedings Volume 9532, 95321K (2015) https://doi.org/10.1117/12.2185403

KEYWORDS: Waveguides, Crystals, Laser crystals, Femtosecond phenomena, Polarization, Cladding, Continuous wave operation, Waveguide lasers, Refractive index, Birefringence

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SPIE Journal Paper | 29 June 2015

Superficial waveguide splitters fabricated by femtosecond laser writing of LiTaO3 crystal

Chen Cheng, Carolina Romero, Javier R. Vázquez Vázquez de Aldana, Feng Chen

OE, Vol. 54, Issue 06, 067113, (June 2015) https://doi.org/10.1117/12.10.1117/1.OE.54.6.067113

KEYWORDS: Waveguides, Femtosecond phenomena, Crystals, Laser crystals, Refractive index, Photonic crystals, Wave propagation, Fabrication, Polarization, Cladding

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SPIE Journal Paper | 23 October 2014

Femtosecond laser-written lithium niobate waveguide laser operating at 1085 nm

Yang Tan, Javier Vázquez de Aldana, Feng Chen

OE, Vol. 53, Issue 10, 107109, (October 2014) https://doi.org/10.1117/12.10.1117/1.OE.53.10.107109

KEYWORDS: Waveguides, Femtosecond phenomena, Crystals, Neodymium, Waveguide lasers, Laser crystals, Lithium niobate, Polarization, Laser damage threshold, Refractive index

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SPIE Journal Paper | 9 September 2014

Femtosecond laser-written double-cladding waveguides in Nd:GdVO₄ crystal: Raman analysis, guidance, and lasing

Hongliang Liu, Javier Vázquez de Aldana, Magdalena Aguiló, Francesc Díaz, Feng Chen, Airán Ródenas Seguí

OE, Vol. 53, Issue 09, 097105, (September 2014) https://doi.org/10.1117/12.10.1117/1.OE.53.9.097105

KEYWORDS: Waveguides, Cladding, Crystals, Neodymium, Laser crystals, Waveguide lasers, Femtosecond phenomena, Raman spectroscopy, Phonons, Polarization

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Proceedings Article | 1 May 2014 Paper

Efficient lasing in Nd:GdVO4 depressed cladding waveguides produced by femtosecond laser writing

Hongliang Liu, Javier Vázquez de Aldana, Feng Chen

Proceedings Volume 9133, 913315 (2014) https://doi.org/10.1117/12.2049489

KEYWORDS: Waveguides, Cladding, Waveguide lasers, Crystals, Laser crystals, Polarization, Femtosecond phenomena, Continuous wave operation, Laser systems engineering, Laser damage threshold

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Proceedings Article | 18 November 2013 Paper

On-axis Dammann lenses and femtosecond pulses: triggering non-linear effects

Jorge Pérez-Vizcaíno, Omel Mendoza-Yero, Rocío Borrego-Varillas, Gladys Mínguez-Vega, Javier Vázquez de Aldana, Pedro Andrés, Jesús Láncis

Proceedings Volume 8785, 87852U (2013) https://doi.org/10.1117/12.2025702

KEYWORDS: Lenses, Spatial light modulators, Femtosecond phenomena, Diffraction, Optical simulations, Nonlinear optics, Second-harmonic generation, Silica, Chromatic aberrations, Charge-coupled devices

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Proceedings Article | 5 June 2010 Paper

Analysis of linear and nonlinear optical properties of diffraction gratings inscribed on the surface of single crystals of the KTiOPO[sub]4[/sub] family

G. Raj Kumar, J. Carvajal, M. C. Pujol, X. Mateos, M. Aguiló, F. Diaz, J. Vázquez de Aldana, C. Romero, C. Méndez, P. Moreno, L. Roso, J. Ferré-Borrull, J. Pallarès, L. F. Marsal, R. Macovez, J. Martorell

Proceedings Volume 7728, 772817 (2010) https://doi.org/10.1117/12.854729

KEYWORDS: Diffraction, Diffraction gratings, Crystals, Ferroelectric materials, Nonlinear crystals, Laser ablation, Photonic crystals, Ultrafast lasers, Statistical analysis, Modulation

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Showing 5 of 14 publications

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