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Proceedings Article

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

[+] Author Affiliations
Jens Löhring, Ansgar Meissner, Valentin Morasch, Peter Becker, Dieter Hoffmann

Fraunhofer-Institut für Lasertechnik (Germany)

Wolfgang Heddrich

Hochschule Darmstadt (Germany)

Proc. SPIE 7193, Solid State Lasers XVIII: Technology and Devices, 71931Y (February 28, 2009); doi:10.1117/12.814715
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From Conference Volume 7193

  • Solid State Lasers XVIII: Technology and Devices
  • W. Andrew Clarkson; Norman Hodgson; Ramesh K. Shori
  • San Jose, CA | January 24, 2009

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.

© (2009) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Jens Löhring ; Ansgar Meissner ; Valentin Morasch ; Peter Becker ; Wolfgang Heddrich, et al.
"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 (February 28, 2009); doi:10.1117/12.814715; http://dx.doi.org/10.1117/12.814715


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