20-watt output power Tm:YAG laser driver for HBr mid-IR laser

Dennis D. Lowenthal; Charles E. Hamilton; Steven Chase Tidwell; Mark S. Bowers; James J. Ewing

doi:10.1117/12.204958

31 March 1995 20-watt output power Tm:YAG laser driver for HBr mid-IR laser

Dennis D. Lowenthal, Charles E. Hamilton, Steven Chase Tidwell, Mark S. Bowers, James J. Ewing

Proceedings Volume 2502, Gas Flow and Chemical Lasers: Tenth International Symposium; (1995) https://doi.org/10.1117/12.204958
Event: Gas Flow and Chemical Lasers: Tenth International Symposium, 1994, Friedrichshafen, Germany

Abstract

A design, as well as verification measurements, are presented for an end pumped, 20 Watt output power, single frequency, Tm:YAG laser driver for pumping a HBr mid-IR laser. Efficient end pumping of the Tm:YAG is achieved by `close lens coupling' 15 Watt average power, room temperature, 785 nm diode bars to several Tm:YAG rods. The Tm:YAG laser is operated single frequency (injection seeded) in order to couple efficiently its output to the narrow absorption band of HBr. A 2 micron laser operating multi-line, but with a bandwidth less than 1 - 2 GHz, is also under consideration using a HBr laser with increased pump absorption characteristics obtained by increasing the pressure or by placing the HBr laser inside the 2 micron laser using intra-cavity 2 micron pumping.

Citation Download Citation

Dennis D. Lowenthal, Charles E. Hamilton, Steven Chase Tidwell, Mark S. Bowers, and James J. Ewing "20-watt output power Tm:YAG laser driver for HBr mid-IR laser", Proc. SPIE 2502, Gas Flow and Chemical Lasers: Tenth International Symposium, (31 March 1995); https://doi.org/10.1117/12.204958

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