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Proceedings Paper

Quantum-defect-limited operation of Yb:YAG crystal
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Paper 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.

Paper Details

Date Published: 23 March 2005
PDF: 4 pages
Proc. SPIE 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (23 March 2005); doi: 10.1117/12.611033
Show Author Affiliations
Junji Kawanaka, Japan Atomic Energy Research Institute (Japan)
Takahiro Shoji, Osaka Univ. (Japan)
Shigeki Tokita, Osaka Univ. (Japan)
Masayuki Fujita, Osaka Univ. (Japan)
Yasukazu Izawa, Osaka Univ. (Japan)


Published in SPIE Proceedings Vol. 5777:
XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
Jarmila Kodymova, Editor(s)

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