Memorias de investigación
Communications at congresses:
Atmospheric CO2 remote sensing system based on high brightness semiconductor lasers and single photon counting detection

Research Areas
  • Electronic technology and of the communications

We propose an integrated path di erential absorption lidar system based on all-semiconductor laser sources and single photon counting detection for column-averaged measurements of atmospheric CO2. The Random Modulated Continuous Wave (RM-CW) approach has been selected as the best suited to semiconductor lasers. In a RM-CW lidar, a pseudo random sequence is sent to the atmosphere and the received signal reflected from the target is correlated with the original sequence in order to retrieve the path length. The transmitter design is based on two monolithic Master Oscillator Power Ampli?ers (MOPAs), providing the on-line and o -line wavelengths close to the selected absorption line around 1.57 ?um. Each MOPA consists of a frequency stabilized distributed feedback master oscillator, a bent modulator section, and a tapered amplifier. This design allows the emitters to deliver high power and high quality laser beams with good spectral properties. An output power above 400 mW with a SMSR higher than 45 dB and modulation capability have been demonstrated. On the side of the receiver, our theoretical and experimental results indicate that the major noise contribution comes from the ambient light and detector noise. For this reason narrow band optical ?lters are required in the envisioned space-borne applications. In this contribution, we present the latest progresses regarding the design, modelling and characterization of the transmitter, the receiver, the frequency stabilization unit and the complete system.
SPIE Remote Sensing
Toulouse, France
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Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing XI, Proc. of SPIE Vol. 9645, 964503.
  • Autor: Antonio Perez Serrano UPM
  • Autor: Mariafernanda Vilera Suárez UPM
  • Autor: Ignacio Esquivias Moscardo UPM
  • Autor: Mickael Faugueron III-V Labs
  • Autor: Michel Krakowski III-V Labs
  • Autor: Frédéric van Dijk III-V Labs
  • Autor: Gerd Kochem Fraunhofer-Institut fur Lasertechnik
  • Autor: Martin Traub Fraunhofer-Institut fur Lasertechnik
  • Autor: Pawel Adamiec Alter Technology Tuv Nord S.A.U
  • Autor: Juan Barbero Alter Technology Tuv Nord S.A.U
  • Autor: Xiao Ai University of Bristol
  • Autor: John Rarity University of Bristol
  • Autor: Mathieu Quatrevalet Deutsches Zentrum für Luft- und Raumfahrt
  • Autor: Gerhard Ehret Deutsches Zentrum für Luft- und Raumfahrt

Research Group, Departaments and Institutes related
  • Creador: Departamento: Tecnología Fotónica y Bioingeniería