Temperature characteristics of small signal gain for Nd/Cr:YAG ceramic lasers |
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| Authors: | T. Saiki K. Funahashi K. Imasaki H. Fujita C. Yamanaka |
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| 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 |
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| Abstract: | Thermal dependence on the small signal gain of Nd/Cr:YAG (yttrium aluminum garnet) ceramics was observed experimentally. Usually, Nd:YAG crystal and ceramics have remarkable gain reduction when optical pumping is performed and the temperature of the laser media is upped to 373 K. A CW laser light generated in a 1064 nm Nd:YAG laser oscillator was amplified by Nd/Cr:YAG ceramic amplifier, and the output power was measured at non-saturation level. Laser small signal gain of the ceramic disk was kept to 470 K. This property was remarkably different from one of Nd:YAG crystals or ceramics. The peak shift of the fluorescence was observed experimentally when the temperature is high. |
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| Keywords: | Lamp light Solar-pumping Nd/Cr:YAG Ceramic lasers Cr co-doping Small signal gain High temperature |
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