Improvement of 2.79-μm laser performance on laser diode side-pumped GYSGG/Er,Pr:GYSGG bonding rod with concave end-faces<xref rid="cpb_28_11_114208_fn1" ref-type="fn">*</xref><fn id="cpb_28_11_114208_fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant Nos. 51872290, 51702322, and 51802307) and the National Key Research and Development Program of China (Grant No. 2016YFB1102301).</p></fn>

Improvement of 2.79-μm laser performance on laser diode side-pumped GYSGG/Er,Pr:GYSGG bonding rod with concave end-faces**

Project supported by the National Natural Science Foundation of China (Grant Nos. 51872290, 51702322, and 51802307) and the National Key Research and Development Program of China (Grant No. 2016YFB1102301).

Zhao Xu-Yao^{1, 2}, Sun Dun-Lu^{1, †}, Luo Jian-Qiao¹, Zhang Hui-Li¹, Fang Zhong-Qing^{1, 2}, Quan Cong^{1, 2}, Hu Lun-Zhen^{1, 2}, Han Zhi-Yuan^{1, 2}, Cheng Mao-Jie¹, Yin Shao-Tang¹

Relative temperature distribution and center temperature at cross-section of bonding surfaces in two crystal rods.