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Proceedings Paper

Single-frequency Nd:YGG laser at 935 nm for future water-vapour DIAL systems
Author(s): Jens Löhring; Ansgar Meissner; Valentin Morasch; Peter Becker; Wolfgang Heddrich; Dieter Hoffmann
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Paper Abstract

For future satellite based water vapour DIAL systems, efficient and rugged laser sources are required preferably around 935 nm. The quasi 4-level transition from R2 to Z5 in Nd:YGG is a promising candidate for its direct generation. Q-switch operation at 100 Hz with pulse energies up to 7.7 mJ is reported as well as single frequency operation with an injection seeded system stabilized by ramp-and-fire-method. The pulse energy of a 4.5 mJ oscillator was scaled to 32 mJ with an InnoSlab-based amplifier at nearly diffraction limited beam quality of M2 < 1.4. Heterodyne measurements show a line width of less than 28 MHz.

Paper Details

Date Published: 28 February 2009
PDF: 7 pages
Proc. SPIE 7193, Solid State Lasers XVIII: Technology and Devices, 71931Y (28 February 2009); doi: 10.1117/12.814715
Show Author Affiliations
Jens Löhring, Fraunhofer-Institut für Lasertechnik (Germany)
Ansgar Meissner, Fraunhofer-Institut für Lasertechnik (Germany)
Valentin Morasch, Fraunhofer-Institut für Lasertechnik (Germany)
Peter Becker, Fraunhofer-Institut für Lasertechnik (Germany)
Wolfgang Heddrich, Hochschule Darmstadt (Germany)
Dieter Hoffmann, Fraunhofer-Institut für Lasertechnik (Germany)


Published in SPIE Proceedings Vol. 7193:
Solid State Lasers XVIII: Technology and Devices
W. Andrew Clarkson; Norman Hodgson; Ramesh K. Shori, Editor(s)

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