Temperature characteristics of small signal gain for Nd/Cr:YAG ceramic lasers
✍ Scribed by T. Saiki; K. Funahashi; S. Motokoshi; K. Imasaki; K. Fujioka; H. Fujita; M. Nakatsuka; C. Yamanaka
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 335 KB
- Volume
- 282
- Category
- Article
- ISSN
- 0030-4018
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✦ Synopsis
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.