Single-frequency Nd:YGG laser at 935 nm for future water-vapour DIAL systems

Jens Löhring; Ansgar Meissner; Valentin Morasch; Peter Becker; Wolfgang Heddrich; Dieter Hoffmann

doi:10.1117/12.814715

28 February 2009 Single-frequency Nd:YGG laser at 935 nm for future water-vapour DIAL systems

Jens Löhring, Ansgar Meissner, Valentin Morasch, Peter Becker, Wolfgang Heddrich, Dieter Hoffmann

Proceedings Volume 7193, Solid State Lasers XVIII: Technology and Devices; 71931Y (2009) https://doi.org/10.1117/12.814715
Event: SPIE LASE: Lasers and Applications in Science and Engineering, 2009, San Jose, California, United States

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.

Citation Download Citation

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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