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28 February 2009 Single-frequency Nd:YGG laser at 935 nm for future water-vapour DIAL systems
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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.
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Jens Löhring, Ansgar Meissner, Valentin Morasch, Peter Becker, Wolfgang Heddrich, and Dieter Hoffmann "Single-frequency Nd:YGG laser at 935 nm for future water-vapour DIAL systems", Proc. SPIE 7193, Solid State Lasers XVIII: Technology and Devices, 71931Y (28 February 2009); https://doi.org/10.1117/12.814715
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