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Proceedings Paper

Compact fiber laser-pumped mid-infrared source based on orientation-patterned gallium arsenide
Author(s): A. Grisard; F. Gutty; E. Lallier; B. Gérard
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Paper Abstract

Among quasi-phase matching (QPM) materials, PPLN suffers from a limited transparency, strongly limiting both the output power and the beam quality above 4 μm. We are developing a new QPM technology based on Orientation- Patterned Gallium Arsenide (OP-GaAs) crystals, transparent up to 16 μm and showing excellent nonlinear and thermal properties and very low losses (<0.02 cm-1). We demonstrated with such samples a high-repetition rate tunable OPO attractively pumped by a remote Thulium fiber laser and integrated in a 25×30×6 cm transportable head. A 3 W level output in the 3-5 μm range was obtained with a 53% efficiency and an unprecedented beam quality (M2=1.4), making this module most suited to study directed infrared countermeasures (DIRCM).

Paper Details

Date Published: 5 October 2010
PDF: 7 pages
Proc. SPIE 7836, Technologies for Optical Countermeasures VII, 783606 (5 October 2010); doi: 10.1117/12.865065
Show Author Affiliations
A. Grisard, Thales Research & Technology (France)
F. Gutty, Thales Research & Technology (France)
E. Lallier, Thales Research & Technology (France)
B. Gérard, Alcatel-Thales III-V Lab. (France)

Published in SPIE Proceedings Vol. 7836:
Technologies for Optical Countermeasures VII
David H. Titterton; Mark A. Richardson, Editor(s)

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