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22 February 2013 Megawatt peak power UV microlaser
Rakesh Bhandari, Takunori Taira
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Proceedings Volume 8604, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XII; 860405 (2013) https://doi.org/10.1117/12.2002263
Event: SPIE LASE, 2013, San Francisco, California, United States
Abstract
We report the development of a very compact, highly efficient, megawatt peak power 266 nm UV microlaser. It contains a specially designed passively Q-switched Nd:YAG/Cr4+:YAG microchip laser whose high output peak power of 13 MW enables us to perform wavelength conversion without using any optics before the nonlinear crystals. We achieve 73 % SHG conversion efficiency using a LBO crystal and 45% FHG conversion efficiency using a BBO crystal. As a result, we obtain 650 μJ, 4.3 MW peak power, 150 ps, 100 Hz pulse output at 266 nm. This palm-top size 266 nm UV microlaser will be useful for many applications.
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Rakesh Bhandari and Takunori Taira "Megawatt peak power UV microlaser", Proc. SPIE 8604, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XII, 860405 (22 February 2013); https://doi.org/10.1117/12.2002263
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KEYWORDS
Crystals
Nonlinear crystals
Ultraviolet radiation
Laser crystals
Picosecond phenomena
Second-harmonic generation
Pulsed laser operation
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