Listar por autoría "ab1e8415-d536-4e2a-9ca1-3398f27a9dee"

Mostrando ítems 1-20 de 28

    • closedAccess   25 Million Sensing Measurements Per Second Using Quasi-Integer Ratio Time-Expanded φOTDR 

      Soriano-Amat, Miguel; Martins, Hugo; Durán, Vicente; Martin-Lopez, Sonia; Gonzalez-Herraez, Miguel; Fernández Ruiz, María del Rosario Optica Publishing Group (2022)
      We demonstrate the detection of strain perturbations along a 500 m optical fiber with 2 cm spatial resolution and 1 kHz sampling frequency via quasi-integer-ratio time-expanded φOTDR, requiring less than 100 MHz photodetection ...

    • openAccess   All-optical coherent pulse compression for dynamic laser ranging using an acousto-optic dual comb 

      BILLAULT, vincent; Durán, Vicente; Fernandez-Pousa, Carlos; Crozatier, Vincent; Dolfi, Daniel; guillet de chatellus, hugues Optical Society of America (2021-07-22)
      We demonstrate a new and simple dynamic laser ranging platform based on analog all-optical coherent pulse compression of modulated optical waveforms. The technique employs a bidirectional acousto-optic frequency shifting ...

    • openAccess   Bidirectional frequency-shifting loop for dual-comb spectroscopy 

      Durán, Vicente; Djevarhidjian, Leo; guillet de chatellus, hugues Optical Society of America (2019)
      We present a bidirectional recirculating frequency-shifting loop, seeded by a continuous-wave (cw) laser, to perform multi-heterodyne interferometry. This fiber-optic system generates two counter-propagating “acousto-optic” ...

    • openAccess   Closed-loop adaptive optics with a single element for wavefront sensing and correction 

      Martinez Cuenca, Raul; Durán, Vicente; Arines, Justo; Ares, Jorge; Jaroszewicz, Z.; Bará, Salvador; Martínez-León, Lluís; Lancis, Jesús Optical Society of America (2011)
      We propose a closed-loop adaptive optical arrangement based on a single spatial light modulator that simultaneously works as a correction unit and as the key element of a wavefront sensor. This is possible by using a liquid ...

    • openAccess   Coherent multi-heterodyne spectroscopy using acousto-optic frequency combs 

      Durán, Vicente; Schnébelin, Come; Guillet de Chatellus, Hume Optical Society of America (2018)
      We propose and characterize experimentally a new source of optical frequency combs for performing multi-heterodyne spectrometry. This comb modality is based on a frequency-shifting loop seeded with a continuous-wave (CW) ...

    • openAccess   Common-Path Dual-Comb Spectroscopy Using a Single Electro-Optic Modulator 

      Soriano-Amat, Miguel; Soto, Marcelo; Durán, Vicente; Martins, Hugo; Martin-Lopez, Sonia; Gonzalez-Herraez, Miguel; Fernández Ruiz, María del Rosario IEEE (2020-09-15)
      Dual frequency comb (DFC) spectroscopy using electro-optic comb generators stands out for its flexibility, easy implementation, and low cost. Typically, two combs with different line spacing are generated from a common ...

    • openAccess   Compressive holography with a single-pixel detector 

      Clemente Pesudo, Pedro Javier; Durán, Vicente; Tajahuerce, Enrique; Andrés, Pedro; Climent, Vicent; Lancis, Jesús Optical Society of America (2013)
      This Letter develops a framework for digital holography at optical wavelengths by merging phase-shifting interferometry with single-pixel optical imaging based on compressive sensing. The field diffracted by an input object ...

    • openAccess   Compressive imaging in scattering media 

      Durán, Vicente; Soldevila, Fernando; Irles, Esther; Clemente Pesudo, Pedro Javier; Tajahuerce, Enrique; Andrés, Pedro; Lancis, Jesús Optical Society of America (2015)
      One challenge that has long held the attention of scientists is that of clearly seeing objects hidden by turbid media, as smoke, fog or biological tissue, which has major implications in fields such as remote sensing or ...

    • openAccess   Dual electro-optic comb spectroscopy using a single pseudo-randomly driven modulator 

      Durán, Vicente; Escobar-Vera, Camilo; Soriano-Amat, Miguel; Martins, Hugo; Martin-Lopez, Sonia; Gonzalez-Herraez, Miguel; Fernández Ruiz, María del Rosario Optica Publishing Group (2022-07-04)
      We present a dual-comb scheme based on a single intensity modulator driven by inexpensive board-level pseudo-random bit sequence generators. The result is a simplified architecture that exhibits a long mutual coherence ...

    • closedAccess   Frequency Stability Requirements in Quasi-Integer-Ratio Time-Expanded Phase-Sensitive OTDR 

      Soriano-Amat, Miguel; Martins, Hugo; Durán, Vicente; Fermoso, Pablo; Martin-Lopez, Sonia; Gonzalez-Herraez, Miguel; Fernández Ruiz, María del Rosario IEEE (2023-01-15)
      Time-expanded phase sensitive (TE-ϕ)OTDR is a recently reported technique for distributed fiber sensing that relies on the use of an electro-optic dual frequency comb (DFC) scheme. A distinctive feature of this approach ...

    • openAccess   Gain-switched semiconductor lasers with pulsed excitation and optical injection for dual-comb spectroscopy 

      Quevedo-Galán, Clara; Durán, Vicente; Rosado, A.; Pérez-Serrano, A.; Garcia Tijero, Jose Manuel; Esquivias, I. Optical Society of America (2020-10-26)
      In this work we demonstrate the capability of two gain-switched optically injected semiconductor lasers to perform high-resolution dual-comb spectroscopy. The use of low duty cycle pulse trains to gain switch the lasers, ...

    • openAccess   Image transmission through dynamic scattering media by single-pixel photodetection 

      Tajahuerce, Enrique; Durán, Vicente; Clemente Pesudo, Pedro Javier; Irles, Esther; Soldevila, Fernando; Andrés, Pedro; Lancis, Jesús Optical Society of America (2014)
      Smart control of light propagation through highly scattering media is a much desired goal with major technological implications. Since interaction of light with highly scattering media results in partial or complete depletion ...

    • closedAccess   Imaging through scattering media with single-pixel detection 

      Irles, Esther; Soldevila, Fernando; Jauregui-Sánchez, Y.; Clemente, Pere; Durán, Vicente; Tajahuerce, Enrique; Andrés, Pedro; Artal, Pablo; Lancis, Jesús SPIE (2017)
      We describe a method to image objects through scattering media based on single-pixel detection and microstructured illumination. Spatial light modulators are used to project a set of microstructured light patterns onto the ...

    • openAccess   Optical frequency combs generated by acousto-optic frequency-shifting loops 

      Durán, Vicente; guillet de chatellus, hugues; Schnébelin, Come; Kanagaraj, Nithyanandan; Djevarhidjian, Leo; Clement Bellido, Juan; Fernandez-Pousa, Carlos IEEE (2019-12-01)
      A recirculating loop that includes an acousto-optic frequency shifter (AOFS) constitutes a versatile procedure to generate an optical frequency comb (OFC) from a continuous wave (cw) laser. This scheme, implementable with ...

    • openAccess   Optimization of acousto-optic optical frequency combs 

      Kanagaraj, Nithyanandan; Djevarhidjian, Leo; Durán, Vicente; Schnebelin, Come; guillet de chatellus, hugues Optical Society of America (2019)
      Acousto-optic optical frequency combs can easily produce several hundreds of mutually coherent lines from a single laser, by successive frequency shifts in a loop containing an acousto-optic frequency shifter. They combine ...

    • openAccess   Phase calibration of spatial light modulators by means of Fresnel images 

      Martínez-León, Lluís; Jaroszewicz, Z.; Kołodziejczyk, A.; Durán, Vicente; Tajahuerce, Enrique; Lancis, Jesús Institute of Physics (2009)
      Reliable application of spatial light modulators (SLMs) as programmable diffractive optical elements requires a thorough calibration. In this paper, we propose a method for calibrating SLMs based on the evaluation of ...

    • openAccess   Phase imaging by spatial wavefront sampling 

      Soldevila, Fernando; Durán, Vicente; Clemente Pesudo, Pedro Javier; Lancis, Jesús; Tajahuerce, Enrique Optical Society of America (2018)
      Phase-imaging techniques extract the optical path length information of a scene, whereas wavefront sensors provide the shape of an optical wavefront. Since these two applications have different technical requirements, ...

    • openAccess   Poincaré-sphere representation of phase-mostly twisted nematic liquid crystal spatial light modulators 

      Durán, Vicente; Clemente Pesudo, Pedro Javier; Martínez-León, Lluís; Climent, Vicent; Lancis, Jesús Institute of Physics (2009)
      We establish necessary conditions in order to design a phase-only wave front modulation system from a liquid crystal display. These conditions determine the dependence of the polarization state of the light emerging from ...

    • closedAccess   Quadratic phase coding for SNR improvement in time-expanded phase-sensitive OTDR 

      Soriano-Amat, Miguel; Martins, Hugo; Durán, Vicente; Martin-Lopez, Sonia; Gonzalez-Herraez, Miguel; Fernández Ruiz, María del Rosario Optical Society of America (2021-09-01)
      Time-expanded phase-sensitive optical time-domain reflectometry (TE − 8OTDR) is a dual-comb-based distributed optical fiber sensing technique capable of providing centimeter scale resolution while maintaining a remarkably low ...

    • openAccess   Single-pixel digital ghost holography 

      Clemente Pesudo, Pedro Javier; Tajahuerce, Enrique; Torres Company, Víctor; Lancis, Jesús; Durán, Vicente American Physical Society (2012)
      Since its discovery, the “ghost” diffraction phenomenon has emerged as an unconventional technique for optical imaging with very promising advantages. However, extracting the intensity and phase information of a structured ...