一体化Y型腔正交偏振氦氖激光器的温度场仿真与实验

龚梦帆; 肖光宗; 于旭东; 张斌

doi:doi:10.3788/irla201645.0505002

红外与激光工程, 2016, 45 (5): 0505002, 网络出版: 2016-06-12

一体化Y型腔正交偏振氦氖激光器的温度场仿真与实验

Temperature field simulation and experimental of orthogonal polarized He-Ne laser with integrated Y-shaped cavity

论文大纲

龚梦帆 ^*肖光宗于旭东张斌

作者单位

国防科学技术大学光电科学与工程学院, 湖南长沙 410073

氦氖激光器温度场仿真 ANSYS有限元一体化Y型腔 He-Ne laser temperature field simulation ANSYS finite element integrated Y-shaped cavity

摘要

为了研究一体化Y型腔正交偏振氦氖激光器腔内温度场分布对其输出频差稳定性的影响, 利用ANSYS有限元软件建立了该激光器的热力学模型。详细介绍了材料热参数的处理、激光器增益区热载荷的施加和换热系数的计算方法, 通过仿真得到了该激光器腔体在稳态和瞬态情况下的温度场分布。采用红外热像仪设备拍摄得到腔体表面的实际温度值, 与仿真结果对比, 表明二者的温度值差异小于1%, 建立的仿真模型准确可靠。激光器启动后, 热量逐步从增益区向非增益区传导。当激光器温度分布稳定时, 腔体存在明显的温度梯度分布, 其中表面区域温度梯度最大;表面温度最高点位于阴极附近, 最低点位于远离增益区的子腔体下表面。两子腔表面温度差值为0.05 ℃, 引起的频差漂移为0.067 MHz。研究表明: 激光器两子腔随时间变化产生的温度差值仍是制约激光器输出频差稳定性的主要因素, 为下一步提高频差稳定性和优化激光器几何结构设计提供了指导。

Abstract

Thermal effects could dramatically destroy the performances of the orthogonal-polarized He-Ne laser featured with an integrated Y-shaped cavity. To explore detailed impacts on the output frequency difference stability, one thermal model was established via the ANSYS software. Material disposals and heat source loading were presented, including the calculations of heat flux density and transfer coefficients. Thermal features were shown and discussed both in steady-state and transient-state. Later practical experiments were employed with a thermal infrared imager. The differences between simulations and experimental results were barely smaller than 1%, which had validated the accuracy and reliability of the simulations. After the laser setting to work, heat gradually transmitted from gain area to non-gain area. When the temperature distribution of the laser was in steady state, the cavity surface regions had maximum thermal gradient. The points maximum temperature were always near the cathode, while those with minimum temperature were close to the underlying surfaces of the sub-cavities. The temperature difference was about 0.05 ℃ between the surfaces of the sub-cavities, and the resulted frequency drift was about 0.067 MHz. It reveals that the time-dependent temperature divergences between two sub-cavity is still the main restricting factor in the stability of the laser output frequency difference, which can provide some important guidance for improving the stability of laser frequency difference and optimizing the design of laser geometry construction.

参考文献

[1] Xiao Guangzong, Long Xingwu, Zhang Bin. A novel orthogonal polarized dual-frequency laser using a Y-shaped cavity[J]. Optics & Laser Technology, 2011, 43(7): 1314-1317.

[2] Xiao Guangzong, Long Xingwu, Zhang Bin, et al. A novel active optical pproach for acceleration measurement based on a Y-shaped cavity dual-frequency laser[J]. Optics & Laser Technology, 2012, 44(2): 344-348.

[3] Xiao Guangzong, Long Xingwu, Zhang Bin, et al. Precise force measurement method by a Y-shaped cavity dual-frequency laser[J]. Chinese Optics Letters, 2011, 9(10): 101201-101204. (in Chinese)

[4] Wang Xin, Xiao Guangzong, Xie Yuanping. Compound-cavity and its application in laser technology[J]. Laser and Infrared, 2013, 43(3): 240-243. (in Chinese)

[5] Xiao Guangzong. Preliminary study on laser accelerometer based on Y-shaped cavity orthogonal polarized laser[D]. Changsha: National University of Defense Technology, 2011. (in Chinese)

[6] Zhi Yin, Li Long, Shi Peng, et al. Temperature field of pulse LD end pumped Nd: YAG crystal[J]. Infrared and Laser Engineering, 2015, 44(2): 491-496. (in Chinese)

[7] Wang Wen, Gao Xin, Zhou Zepeng, et al. Steady-state thermal analysis of hundred-watt semiconductor laser with multichip-packaging[J]. Infrared and Laser Engineering, 2014, 43(5): 1438-1443. (in Chinese)

[8] Lan Peifeng, Liu Yuanzheng, Wang Jiliang, et al. Research on thermal performance for resonator of mechanically dithered ring laser gyroscopes[J]. Laser and Optoelectronics Progress, 2014, 51(5): 051405. (in Chinese)

[9] Hu Renxi, Zhang Xiuhui. ANSYS 14 Thermodynamics/Electromagnetic/Coupled Field Analysis SSP[M]. Beijing: Posts and Telecom Press, 2013. (in Chinese)

[10] Yu Xudong, Zhang Pengfei, Tang Jianxun, et al. Finite element analysis and experiments of temperature fields of mechanically dithered ring gyroscopes[J]. Optics and Precision Engineering, 2010, 18(4): 913-920. (in Chinese)

[11] Hou Xiaoke, Zhang Liqing, Zhang Shengli, et al. Precise thermal simulation module for DFB laser sub-assembly with transistor outline package[J]. Chinese Journal of Lasers, 2013, 40(10): 1002006. (in Chinese).

[12] Han Yaofeng, Zhang Ruofan, Yang Hongru, et, al. Time-variable thermal effect in side-pump high power pulsed Nd: YAG laser[J]. High Power Laser and Particle Beams, 2015, 27(6): 27061005. (in Chinese)

[13] Pu G Y. ANSYS Workbench Based Tutorial and Example Explanation(Second edition)[M]. Beijing: China Water & Power Press, 2013. (in Chinese)

[14] Yang Shiming, Tao Wenquan. Heat Transfer[M]. Beijing: Higher Education Press, 2006. (in Chinese)

[15] Li Yunhong, Sun Xiaogang, Yuan Guibin. Accurate measuring temperature with infrared thermal imager[J]. Optics and Precision Engineering, 2007, 15(9): 1336-1341. (in Chinese)

龚梦帆, 肖光宗, 于旭东, 张斌. 一体化Y型腔正交偏振氦氖激光器的温度场仿真与实验[J]. 红外与激光工程, 2016, 45(5): 0505002. Gong Mengfan, Xiao Guangzong, Yu Xudong, Zhang Bin. Temperature field simulation and experimental of orthogonal polarized He-Ne laser with integrated Y-shaped cavity[J]. Infrared and Laser Engineering, 2016, 45(5): 0505002.

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