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Two-pass amplification of CW laser by Nd/Cr:YAG ceramic Active mirror under lamp light pumping |
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| Authors: | T. Saiki S. Motokoshi M. Nakatsuka C. Yamanaka H. Fujita |
| Affiliation: | a Institute for Laser Technology, 1-8-4 Utsubo-honmachi, Osaka, Osaka 550-0004, Japan b Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan |
| Abstract: | The concept of an Active mirror with transparent Nd/Cr:YAG ceramics is proposed. A new ceramic material pumped by an arc-metal-halide lamp has been experimentally implemented. CW-laser light generated in a 1064 nm Nd:YAG micro-tip oscillator was amplified by an Active mirror made of Nd/Cr:YAG ceramic and pumped by CW arc-lamp light. The saturation power density of the Nd/Cr:YAG ceramic was lower than that of Nd:YAG because the stimulated-cross-section and lifetime were effectively enhanced by the sensitization of Cr ions. The maximum output laser power while keeping spatial beam quality was up to 3 W with an input lamp power of 9 W; the resulting optical-optical conversion efficiency of 33% was close to the theoretical prediction of nearly 50%. |
| Keywords: | Ceramic lasers Cr co-doping Saturation CW lamp Solar pumping |
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