Compact fiber laser-pumped mid-Infrared source based on Orientation-Patterned Gallium Arsenide
Identifieur interne : 000E85 ( Main/Exploration ); précédent : 000E84; suivant : 000E86Compact fiber laser-pumped mid-Infrared source based on Orientation-Patterned Gallium Arsenide
Auteurs : A. Grisard [France] ; F. Gutty [France] ; E. Lallier [France] ; B. Gerard [France]Source :
- Proceedings of SPIE, the International Society for Optical Engineering [ 0277-786X ] ; 2010.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
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 25x30x6 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).
Affiliations:
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Le document en format XML
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<front><div type="abstract" xml:lang="en">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<sup>-1</sup>
). We demonstrated with such samples a high-repetition rate tunable OPO attractively pumped by a remote Thulium fiber laser and integrated in a 25x30x6 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 (M<sup>2</sup>
=1.4), making this module most suited to study directed infrared countermeasures (DIRCM).</div>
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