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10 June 2006 430mW diode-pumped Yb:GdCOB laser and its thermal effect
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Proceedings Volume 6344, Advanced Laser Technologies 2005; 634428 (2006)
Event: Advanced Laser Technologies 2005, 2005, Tianjin, China
In this paper, we report a diode end pumped laser with a Yb3+-doped Ca4GdO(BO3)3 crystal (Yb:GdCOB). The dopant concentration of the crystal was 7%. The crystal was pumped longitudinally at 976nm by a fiber-coupled diode laser. The maximum output power of the laser emitted at 1.055um was 430mW, and the laser slope efficiency was 75% with respect to the absorbed pump power. We also observed that the output power still increased when the crystal no longer absorbed more pumped power (the crystal had been saturated). The possible reason may be that the thermal lens effect changed the distribution of the laser mode. This will be discussed in part 3.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jianghai Hu, Yanrong Song, Weiming Yu, Yonggang Wang, Zhuang Zhuo, and Zhigang Zhang "430mW diode-pumped Yb:GdCOB laser and its thermal effect", Proc. SPIE 6344, Advanced Laser Technologies 2005, 634428 (10 June 2006);


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