23 March 2005 Quantum-defect-limited operation of Yb:YAG crystal
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Proceedings Volume 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; (2005) https://doi.org/10.1117/12.611033
Event: XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 2004, Prague, Czech Republic
Abstract
Quantum-defect-limited operation in a diode-pumped Yb:YAG oscillator have been demonstrated at low temperature. The highest slope efficiency of 90% was obtained with M2=20 at the crystal temperature below 70 K, which was close to the theoretical stokes efficiency of 91.2% (λpumplaser=941nm/1030nm). An optical-to-optical efficiency and a laser gain were 74% and 8 cm-1, respectively, at a low pump intensity of 1.3 kW/cm2. After optimizing a spatial mode coupling between a diode pump laser and a TEM00 cavity mode on the crystal, 80% slope efficiency and 70% optical efficiency were still high at M2=1~1.5.
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Junji Kawanaka, Junji Kawanaka, Takahiro Shoji, Takahiro Shoji, Shigeki Tokita, Shigeki Tokita, Masayuki Fujita, Masayuki Fujita, Yasukazu Izawa, Yasukazu Izawa, } "Quantum-defect-limited operation of Yb:YAG crystal", Proc. SPIE 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (23 March 2005); doi: 10.1117/12.611033; https://doi.org/10.1117/12.611033
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