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Autor Martínez Matos, Óscar |
Documentos disponibles escritos por este autor (35)
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Martínez Matos, Óscar ; Vaveliuk, Pablo ; González Izquierdo, Jesús ; Loriot, Vincent | The Optical Society Of America | 2013-10-21Spatial shaping of ultrashort laser beams at the focal plane is theoretically analyzed. The description of the pulse is performed by its expansion in terms of Laguerre-Gaussian orthonormal modes. This procedure gives both a comprehensive interpr[...]texto impreso
Martínez Matos, Óscar ; Hernández Garay, María de la Paz ; González Izquierdo, Jesús ; Calvo Padilla, María Luisa ; Vaveliuk, Pablo ; Cheben, Pavel ; Bañares Morcillo, Luis | Optical Society of America | 2011-01-17The majority of the applications of ultrashort laser pulses require a control of its spectral bandwidth. In this paper we show the capability of volume phase holographic gratings recorded in photopolymerizable glasses for spectral pulse reshapin[...]texto impreso
Martínez Matos, Óscar ; Rodrigo Martín-Romo, José Augusto ; Hernández Garay, María de la Paz ; Izquierdo González, Jesús ; Weigand Talavera, Rosa María ; Calvo Padilla, María Luisa ; Cheben, Pavel ; Vaveliuk, Pablo ; Bañares Morcillo, Luis | The Optical Society Of America | 2010-03-01We present an approach to generate paraxial laser beams with arbitrary spatial distribution in the femtosecond time regime. The proposed technique is based upon a pair of volume phase holographic gratings working in parallel arrangement. It expl[...]texto impreso
Martínez Matos, Óscar ; Rodrigo Martín-Romo, José Augusto ; Vaveliuk, Pablo ; Calvo Padilla, María Luisa | Optical Society of America | 2011-02-15We propose a spectrum analyzer based on the properties of a hologram recorded with the field transmitted by a Fabry-Perot etalon. The spectral response of this holographic Fabry-Perot spectrometer (HFPS) is analytically investigated in the parax[...]texto impreso
Hernández Garay, María de la Paz ; Martínez Matos, Óscar ; González Izquierdo, Jesús ; Calvo Padilla, María Luisa ; Cheben, Pavel ; Bañares Morcillo, Luis | Society of Photo-Optical Instrumentation Engineers (SPIE) | 2011We present the capability of the holographic gratings implemented in photopolymerizable glasses to be applied in spatial and spectral manipulation of femtosecond laser pulses. For this purpose we used volume phase holographic gratings recorded b[...]texto impreso
Martínez Matos, Óscar ; Torchia, Gustavo Adrián ; Vaveliuk, Pablo ; Tocho, Jorge Omar | Pergamon-Elsevier Science Ltd | 2003-08This paper shows the important role that plays the electron-lattice coupling to represent correctly the energy levels of Cr^3^+ ions in Nb^5^+ site into congruent LiN_bO_3 crystals doped with 5.3% of ZnO. Racah's parameters: and crystal field [...]texto impreso
Negative propagation is an unusual effect concerning the local sign change in the Poynting vector components of an optical beam under free propagation. We report this effect for finite-energy Airy beams in a subwavelength nonparaxial regime. Thi[...]texto impreso
Martínez Matos, Óscar ; Calvo Padilla, María Luisa ; Cheben, Pavel ; Rodrigo Martín-Romo, José Augusto ; Janz, Siegfried ; Xu, Dan-Xia ; Delâge, André | Elsevier Science BV | 2007-02-01We propose a new type of arrayed waveguide grating (AWG) multiplexer/demultiplexer based on modified group refractive index. This device is composed by an array of straight and parallel waveguides of equal length and each waveguide consist of tw[...]texto impreso
Martínez Matos, Óscar ; Cheben, Pavel ; Calvo Padilla, María Luisa ; Rodrigo Martín-Romo, José Augusto ; Monte Muñoz de la Peña, Francisco del | Society of Photo-Optical Instrumentation Engineers (SPIE) | 2007We report recent results obtained with volume holographic gratings recorded in a new photopolymerisable glass modified with high refractive index species at molecular level. Various not previously observed performances have been achieved for dif[...]texto impreso
Martínez Matos, Óscar ; Torchia, Gustavo Adrián ; Bilmes, Gabriel M. ; Tocho, Jorge Omar ; Ranea Sandoval, Héctor Francisco | Springer-Verlag | 2005-04The origin of the acoustic signals that are generated in the bulk of a KDP crystal during irradiation with short UV laser pulses is determined. The generation of these signals by excitation with moderate or high optical fluences is linked to the[...]texto impreso
Martínez Matos, Óscar ; Torchia, Gustavo Adrián ; Tocho, Jorge Omar ; Khaidukov, Nikolai Mikhailivich | Pergamon-Elsevier Science Ltd | 2004We have studied the influence of the electron-lattice coupling on the luminescence quantum yield for Cr^3^+ ions in a Cs_2NaAlF_6 crystal. For this purpose, we analyze the absorption and emission spectra of Cr^3^+ ions by means of the configurat[...]texto impreso
Martínez Matos, Óscar ; Torchia, Gustavo Adrián ; Bilmes, Gabriel M. ; Tocho, Jorge Omar | American Physical Society | 2004-06Transient defects in potassium dihydrogen phosphate (KDP) were characterized by using the acoustic signals generated in the crystal when it is impinged with pulsed laser radiation. These defects are produced by simultaneous absorption of two ?=2[...]texto impreso
Martínez Matos, Óscar ; Calvo Padilla, María Luisa ; Rodrigo Martín-Romo, José Augusto ; Alieva, Tatiana Krasheninnikova ; Hernández Garay, María de la Paz ; Cheben, Pavel ; Martí Panameño, Erwin José Armando | IEEE | 2009We present an overview of the main properties and the emerging implementations corresponding to a photopolymerizable glass modified with high refractive index species (HRIS) incorporated at molecular level. The study concerns to transmission and[...]texto impreso
The paraxial estimator (PE) is a parameter quantifying the paraxiality of a light beam. Even if some of its features were previously tackled, key details on its behavior were not fully presented. This paper robustly presents the physical meaning[...]texto impreso
Martínez Matos, Óscar ; Calvo Padilla, María Luisa ; Cheben, Pavel ; Rodrigo Martín-Romo, José Augusto ; Monte Muñoz de la Peña, Francisco del | Maik Nauka, Interperiodica, Springer-Verlag | 2007-12The advances in the sol-gel holographic recording materials, namely in the photopolymerizable compositions and photorefractive glasses, are reviewed. A new sol-gel holographic material is also discussed that exploits diffusion of a high-refracti[...]