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Proceedings Paper • Open Access

High energy, single frequency, tunable laser source operating in burst mode for space based lidar applications
Author(s): Alberto Cosentino; Alessia Mondello; Adalberto Sapia; Alessandro D'Ottavi; Mauro Brotini; Gianna Gironi; Enrico Suetta

Paper Abstract

This paper describes energetic, spatial, temporal and spectral characterization measurements of the Engineering Qualification Model (EQM) of the Laser Transmitter Assembly (TXA) used in the ALADIN instrument currently under development for the ESA ADM-AEOLUS mission (EADS Astrium as prime contractor for the satellite and the instrument). The EQM is equivalent to the Flight Model, with the exception of some engineering grade components. The Laser Transmitter Assembly, based on a diode pumped tripled Nd:YAG laser, is used to generate laser pulses at a nominal wavelength of 355 nm. This laser is operated in burst mode, with a pulse repetition cycle of 100 Hz during bursts. It is capable to operate in Single Longitudinal Mode and to be tuned over 25 GHz range. An internal “network” of sensors has been implemented inside the laser architecture to allow “in flight” monitoring of transmitter. Energy in excess of 100 mJ, with a spatial beam quality factor (M2) lower than 3, a spectral linewidth less than 50 MHz with a frequency stability better than 4 MHz on short term period have been measured on the EQM. Most of the obtained results are well within the expected values and match the Instrument requirements. They constitute an important achievement, showing the absence of major critical areas in terms of performance and the capability to obtain them in a rugged and compact structure suitable for space applications. The EQM will be submitted in the near future to an Environmental test campaign.

Paper Details

Date Published: 21 November 2017
PDF: 6 pages
Proc. SPIE 10567, International Conference on Space Optics — ICSO 2006, 105670C (21 November 2017); doi: 10.1117/12.2308158
Show Author Affiliations
Alberto Cosentino, Galileo Avionica (Italy)
Alessia Mondello, Galileo Avionica (Italy)
Adalberto Sapia, Galileo Avionica (Italy)
Alessandro D'Ottavi, Galileo Avionica (Italy)
Mauro Brotini, Galileo Avionica (Italy)
Gianna Gironi, Galileo Avionica (Italy)
Enrico Suetta, Galileo Avionica (Italy)

Published in SPIE Proceedings Vol. 10567:
International Conference on Space Optics — ICSO 2006
Errico Armandillo; Josiane Costeraste; Nikos Karafolas, Editor(s)

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