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.
© 2007 Chinese Optics Letters
Xiaoming He, Guangjun Zhao, Xiaodong Xu, Xionghui Zeng, and Jun Xu, "Comparison of spectroscopic properties of Yb:YAP and Yb:YAG crystals," Chin. Opt. Lett. 5, 295-297 (2007)