3 April 2000 Directly obtaining a giant quasi-single picosecond pulse by efficient ISHG
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Proceedings Volume 3889, Advanced High-Power Lasers; (2000); doi: 10.1117/12.380926
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan
Abstract
Intracavity frequency doubling with (beta) -BaB2O4 (BBO) crystal in a passively mode-locked unstable confocal resonator Nd:YAP (Nd:YALO3) pulsed laser is described. Without any amplification and pulse selection, a powerful quasi-single psec pulse at 0.54 micrometer with an energy greater than 20 mJ and power density 5 GW/cm2 was obtained by totally passive mode locking for the first time. Energy conversion efficiency 81% from 1.08 to 0.54 micrometer was achieved. The technique of intracavity second harmonic generation (ISHG) leads to stable output energy of SHG with an energy stability of 95.96%. This has a higher stability than that of fundamental wave with an energy stability of 92.78%.
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Feng-tie Wu, "Directly obtaining a giant quasi-single picosecond pulse by efficient ISHG", Proc. SPIE 3889, Advanced High-Power Lasers, (3 April 2000); doi: 10.1117/12.380926; https://doi.org/10.1117/12.380926
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KEYWORDS
Second-harmonic generation

Crystals

Pulsed laser operation

Resonators

Mode locking

Laser crystals

Laser resonators

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