Growth and radiation resistant properties of 2.7–2.8 μm Yb,Er:GSGG laser crystal

✍ Scribed by Dunlu Sun; Jianqiao Luo; Qingli Zhang; Jingzhong Xiao; Wenpeng Liu; Shangfei Wang; Haihe Jiang; Shaotang Yin

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 1020 KB
• Volume: 318
• Category: Article
• ISSN: 0022-0248
• DOI: 10.1016/j.jcrysgro.2010.11.118

✦ Synopsis

High quality Yb 3+ and Er 3+ co-doped Gd 3 Sc 2 Ga 3 O 12 (Yb,Er:GSGG) crystals were grown by the Czochralski (Cz) method, and their absorption and fluorescence properties with the gamma-ray radiation have been investigated. In comparison with Er:YAG crystals, these co-doped crystals exhibit much less color-center absorption after the illumination of gamma-ray. Excited by 940 nm LD, two of the strongest fluorescence peaks were observed near 2.7 and 2.8 mm, suggesting that the Yb 3+ can act as a sensitizer for Er 3+ ion in Yb,Er:GSGG crystals. In particular, the fluorescence intensity of these crystals does not deteriorate by the radiation of gamma-ray even with a dose of 100 Mrad, indicating that Yb,Er:GSGG possesses high capability for enduring the gamma radiation and is a potential laser gain medium for being used under radiant environment.