端泵Nd∶YVO4晶体端面镀制腔镜对其热透镜影响的理论分析
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Theoretical analysis about resonator mirror on the end face of end pumped Nd∶YVO4 to affect it′s thermal lens
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    摘要:

    用ANSYS对吸收15 W 808 nm泵浦光的端泵Nd∶YVO4晶体进行了温度场和变形量模拟。计算了Nd∶YVO4晶体单端有腔镜和两端都无腔镜情况下的热透镜解,得到了在Nd∶YVO4晶体上镀制腔镜会显著增大其热透镜的结论。用马赫-泽德干涉仪实测了Nd∶YVO4晶体热透镜解,该解与有限元模拟解相符,证明结论可靠,对大功率LD端泵的Nd∶YVO4激光器的腔型设计具有指导意义。

    Abstract:

    Through simulating with the ANSYS the temperature field and deflection of the Nd∶YVO4 crystal which absorbed 15 W 808 nm light from the end face.Calculating the thermal lens of the Nd∶YVO4 crystal with and without mirror on the end face.Coming to a conclusion that coating the resonator mirror on the end face of the Nd∶YVO4 crystal can increase the thermal lens effect obviously.The thermal lens solution is verified by detecting the thermal lens by Mach-Zehnder interferometer.So the conclusion is instructive for the design of resonator of Nd∶YVO4 laser end-pumped by high power LD.

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肖孟超,李淑静,罗宁宁,檀慧明.端泵Nd∶YVO4晶体端面镀制腔镜对其热透镜影响的理论分析[J].激光与红外,2009,39(10):1060~1063
XIAO Meng-chao;LI Shu-jing;LUO Ning-ning;TAN Hui-ming. Theoretical analysis about resonator mirror on the end face of end pumped Nd∶YVO4 to affect it′s thermal lens[J]. LASER & INFRARED,2009,39(10):1060~1063

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