Wang Yajun, Yang Wenhai, Zhou Haijun, Huo Meiru, Zheng Yaohui
State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China.
Opt Express. 2013 Jul 29;21(15):18068-78. doi: 10.1364/OE.21.018068.
Temperature dependence of thermal effect for neodymium doped yttrium orthovanadate crystal is quantified by measuring its dioptric power. With the boundary temperature range from 293 K to 353 K, the increase of fractional thermal load (lasing at 1064 nm, pumping at 888 nm) is from 16.9% to 24.9% with lasing, which is attributed to the rise of upconversion parameter and thermal conductivity. The influence of the boundary temperature on the output characteristic of a high-power single frequency laser is also investigated. The maximum output power decreases from 25.3 W to 13.5 W with the increase of boundary temperature from 293 K to 353 K. Analysis results indicate that further power scaling can be achieved by controlling the Nd:YVO(4) temperature to a lower.
通过测量掺钕正钒酸钇晶体的屈光度来量化其热效应的温度依赖性。在293 K至353 K的边界温度范围内，随着激光作用（1064 nm激光，888 nm泵浦），分数热负载的增加从16.9%至24.9%，这归因于上转换参数和热导率的升高。还研究了边界温度对高功率单频激光器输出特性的影响。随着边界温度从293 K升高到353 K，最大输出功率从25.3 W降至13.5 W。分析结果表明，通过将Nd:YVO₄温度控制得更低可以实现进一步的功率扩展。
