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Compositionally tuned Nd:(YxLu1-x)3Ga5O12-laser at 935 nm for H2O-dial systems

: Löhring, J.; Schlösser, M.; Hoffmann, H.-D.

Postprint urn:nbn:de:0011-n-1710462 (601 KByte PDF)
MD5 Fingerprint: a1d51f7a691ea9a593cbccddebfacd64
Copyright 2011 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Erstellt am: 17.5.2012

Clarkson, W.A. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Solid state lasers XX. Technology and devices : 23 - 27 January 2011, San Francisco, California, United States
Bellingham, WA: SPIE, 2011 (Proceedings of SPIE 7912)
ISBN: 978-0-8194-8449-9
Paper 79121N
Conference "Solid State Lasers - Technology and Devices" <20, 2011, San Francisco/Calif.>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer ILT ()

For future satellite based water vapor DIAL systems efficient and rugged sources preferably around 935 nm are required. Especially for the WALES system (Water Vapour Lidar Experiment in Space) four wavelengths between 935.561 nm and 935.906 nm (vac.) have to be addressed. A promising candidate for the direct generation within this spectral range is a simple diode pumped setup based on compositionally tuned neodymium-doped mixed garnet crystals. Within the scope of this work, novel Nd:(YxLu1-x)3Ga5O 12-crystals (Nd:YLuGG) with different compositions (0x1) were investigated. Beside the characterization of some relevant crystal properties laser experiments in quasi-continuous operation, Qswitched operation and in single-longitudinal-mode operation were performed. By the R2-Z 5-transition wavelengths between 935.3 nm and 936.6 nm (vac.) can be addressed with different compositions x. At a repetition rate of 100 Hz nearly 6 mJ were extracted in longitudinal multimode around 935.7 nm (vac.) from a Nd:(Y0.58Lu0.42)3Ga5O 12-crystal. The cavity was injection seeded and stabilized with the ramp-and-fire-method to obtain single frequency radiation. At 935.7 nm more than 4.7 mJ were generated. The laser could be tuned over a range of about ± 0.22 nm in singlelongitudinal- mode operation.