Chinese Optics Letters, Vol. 5, Issue 5, 295 (2007)
Comparison of spectroscopic properties of Yb:YAP and Yb:YAG crystals
Xiaoming He*, Guangjun Zhao, Xiaodong Xu, Xionghui Zeng, and Jun Xu
- Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
The Yb:YAG and Yb:YAP crystals have been grown by Czochralski method. The absorption spectra and the fluorescence spectra of Yb:YAG and Yb:YAP crystals have been investigated. It is shown that the Yb:YAG crystal has better laser properties and smaller threshold power than Yb:YAP crystal. In addition, the absorption cross-section of the Yb:YAP crystal is 2.16 times of that of the Yb:YAG crystal, so laser diode pumped Yb:YAG lasing can be easily realized. Because YAP single crystal is anisotropic, it is provided with polarization characteristics.