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Proceedings Paper

Compact high-power/high-energy 2 μm and mid-infrared laser sources for OCM
Author(s): C. Kieleck; A. Hildenbrand; M. Schellhorn; G. Stoeppler; M. Eichhorn
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Paper Abstract

The paper describes two laser prototypes devoted to the jamming or the damaging of heat-seeking missiles for use in field trials. The semi-ruggedized compact jamming prototype is based either on an OP-GaAs or a ZnGeP2 (ZGP) OPO directly pumped by a 2.09 μm Q-switched Ho3+:YAG laser with up to 20 W of average power around 2.1 μm and an M2 of less than 1.1. For jamming in band II, up to 3.5 W of average power were obtained and repetition rates from 20 kHz to 100 kHz were achieved. For 3.5 W of averaged output power, the M2 of the signal and idler beams were estimated to be less than 1.2. The destruction laser consists of a Ho3+:LLF MOPA laser system which is used to pump a ZGP OPO. The maximum pulse energy of the Ho3+:LLF MOPA was 82 mJ at a repetition rate of 100 Hz. The pump beam quality was measured to M2x = 1.01 and M2y = 1.03 at a wavelength of 2053 nm. The total 3-5 μm energy obtained for destruction was 23.4 mJ, corresponding to an optical-to-optical conversion efficiency of 51 %. The M2 values of the signal were M2x = 1.81 and M2y = 1.98. The M2 values of the corresponding idler beam were M2x = 1.91 and M2y = 1.94, respectively. ISL is also currently working on new laser sources and non linear conversion setups for proposing new versions that should be more compact, more efficient and more integrable.

Paper Details

Date Published: 15 October 2013
PDF: 10 pages
Proc. SPIE 8898, Technologies for Optical Countermeasures X; and High-Power Lasers 2013: Technology and Systems, 889809 (15 October 2013); doi: 10.1117/12.2031662
Show Author Affiliations
C. Kieleck, French-German Research Institute of Saint-Louis (France)
A. Hildenbrand, French-German Research Institute of Saint-Louis (France)
M. Schellhorn, French-German Research Institute of Saint-Louis (France)
G. Stoeppler, French-German Research Institute of Saint-Louis (France)
M. Eichhorn, French-German Research Institute of Saint-Louis (France)


Published in SPIE Proceedings Vol. 8898:
Technologies for Optical Countermeasures X; and High-Power Lasers 2013: Technology and Systems
David H. Titterton; Harro Ackermann; Willy L. Bohn; Mark A. Richardson; Robert J. Grasso, Editor(s)

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