LD抽运复合YAG晶体温度场及热透镜效应研究

李锋; 刘蓉; 白晋涛; 侯洵

LD抽运复合YAG晶体温度场及热透镜效应研究

1.
西北大学, 光子学与光子技术研究所, 西安, 710069;
2.
商洛学院, 物理系, 商州, 726000

作者简介: 李锋(1970- ),男,副教授,博士研究生,从事全固体激光器件研究..

通讯作者: 白晋涛, baijt@rnvu.edu.cn ;

基金项目:
陕西省教育厅专项基金资助项目(05JK185;D4JK125)
中图分类号: O734

Investigation on temperature and thermal lens effects of laser diode pumped composite YAG rods

1.
Institute of Photonics & Photo Technology, Northwest University, Xi'an 710069, China;
2.
Department of Physics, Shangluo Normal College, Shangzhou 726000, China

Corresponding author: BAI Jin-tao, baijt@rnvu.edu.cn ;

CLC number: O734

摘要: 为了研究复合Nd:YAG激光晶体棒在端面抽运下的温度分布及热透镜效应,采用数值分析法得到了端面抽运激光晶体棒内温度场的数值解,当抽运光功率为18W、光斑半径0.2mm时,吸收系数为3.5/cm的复合晶体内最大温度为73.8℃;同时还得到了径向梯度折射率引起的轴向传播光相位延迟分布ΔΦt(r),并与相同条件下的普通晶体作了比较.结果表明,采用复合晶体可以大幅度降低激光晶体内的温升,并减小端面变形导致的透镜效应;复合晶体内的相位延迟分布ΔΦt(r)与普通晶体的相似,且不满足对半径r的二次方关系;热透镜和参考球面镜透镜的相位延迟分布之间存在畸变Δφ,在r较小(rp)时,相位延迟分布ΔΦt(r)可近似等效于一球面透镜,其等效焦距fGRIN值与普通晶体的接近,在r较大(r>wp)时,畸变Δφ随r增大而急剧增大.
- 激光物理 /
- 温度场 /
- 数值分析 /
- 复合YAG激光晶体 /
- 热透镜效应
Abstract: Temperature field and thermal lens effect of laser diode end pumped composite Nd:YAG rod were investigated through numerical analysis methods.Numerical solutions of temperature field were obtained.The maximum temperature was 73.8℃ for composite laser crystal with an absorption coefficient of 3.5/cm,under pump power of 18W with 0.2mm beam radius.And also phase-retardation distribution ΔΦt(r)of the axial transmission light caused by radial temperature gradients was obtained.Comparing with conventional rod,the results show that composite rod leads a lower temperature rise in laser rod,as well as reduces distortion of pump end which brings on lens effect of laser crystal.Phase-retardation distribution ΔΦt(r) in composite rod is similar to that of conventional laser rod,but it doesn't accord with radius quadratic relationship,there is an aberration Δφ between the phase retardation of the thermal lens and referenced spherical lens.ΔΦt(r) corresponds with that of a spherical lens approximately at rp,and the equivalent foci fGRIN approaches to the same value of conventional rod,whereas Δφ increases quickly with the increase of laser beam radius at r>wp.
- laser physics /
- temperature field /
- numerical analysis /
- composite YAG laser rod /
- thermal lens effects

[1]	ZIMER H,ALBERS K,WITTROCK U.Grazing-incidence YVO4-Nd∶ YVO4 composite thin slab laser with low thermo-optic aberrations[J].Opt Lett,2004,29(23):2761-2763.
[2]	LIU Q,GONG M L,LU F Y,et al.520W continuous wave diode corner-pumped composite Yb∶ YAG slab laser[J].Opt Lett,2005,30(7):726-728.
[3]	DASCALU T,TAIRA T,PAVEL N.100W quasi-continuous-wave diode radially pumped microchip composite Yb∶ YAG laser[J].Opt Lett,2002,27(20):1791-1793.
[4]	CZERANOWAKY C,HEUMANNE E,HUBER G.All-solid-state continuous-wave frequency-doubled Nd∶ YAG BIBO laser with 2.8W out put power at 473nm[J].Opt Lett,2003,28(6):432-434.
[5]	CHEN Y,PENG H,HOU W,et al.3.8W of CW blue light generated by intra-cavity frequency doubling of a 946nm Nd∶ YAG laser with LBO[J].Appl Phys,2006,B83(2):241-243.
[6]	GAO L L,TAN H M,WANG H.The composite Nd∶ YAG crystal and its application in high power blue laser[J].Laser and Infrared,2006,36(5):341-344(in Chinese).
[7]	MACDONALD M P,GRAF T H,BALMER J E,et al.Reducing thermal lensing in diode-pumped laser rods[J].Opt Commun,2000,178:383-393.
[8]	YANG L,WANG H L,HUANG W L,et al.Diode-pumped self-Q-switched single frequency 946nm Nd,Cr4+:YAG microchip laser[J].Laser Technology,2003,27(4):282-284(in Chinese).
[9]	ZHANG X B,YAO B Q,WANG Y Zh,et al.Quasi-four-level co-doped Tm/Ho gadolinium vanadate laser[J].Laser Technology,2006,30 (2):119-122(in Chinese).
[10]	WEBER R,NEUENSCHWANDER B,WEBER H P.Thermal effects in solid-state laser materials[J].Optical Materials,1999,11(2-3):245-254.
[11]	XIE W J,TAM S Ch,LAM Y L,et al.Thermal lensing of diode side-pumped solid-state lasers[J].Optics Laser Technology,2000,32(3):199-203.
[12]	KOCHNELL W.Solid state laser engineering[M].Beijing:Science Press,2003:363-366(in Chinese).
[13]	CHEN Y F,HUANG T M,KAO C F,et al.Optimization in fiber-coupled laser diode end-pumped lasers to higher power:influence of thermal effect[J].IEEE J Q E,1997,33(8):1424-1429.

[1]	朱广志 , 陈培锋 , 邹雪芬 , 朱长虹 . 侧面泵浦激光器热透镜效应的有限元分析. 激光技术, 2004, 28(2): 208-210,217.
[2]	张令开 , 顾华东 , 郑陈琪 , 高静 , 武晓东 , 唐玉国 . 热透镜不灵敏长脉冲绿激光腔的设计与分析. 激光技术, 2011, 35(2): 167-169,181. doi: 10.3969/j.issn.1001-3806.2011.02.007
[3]	张帆 , 牛燕雄 , 刘宁 , 梁振江 , 刘帅 . 激光辐照CCD温度场与热应力场的研究. 激光技术, 2017, 41(3): 433-437. doi: 10.7510/jgjs.issn.1001-3806.2017.03.025
[4]	刘国华 , 刘德明 . 高功率光纤激光器喇曼效应的数值分析. 激光技术, 2007, 31(3): 298-300,321.
[5]	曾大文 , 谢长生 . 复合涂层激光熔池温度场及流场的数值模拟. 激光技术, 2000, 24(6): 370-374.
[6]	卢长亮 , 胡芳友 , 黄旭仁 , 易德先 , 胡滨 , 崔爱永 . 脉冲激光辐照金属板温度场应力场数值分析. 激光技术, 2012, 36(6): 754-758. doi: 10.3969/j.issn.1001-3806.2012.06.011
[7]	权秀敏 , 丁林 , 魏兴 . 激光熔覆Ni基合金温度场的数值分析. 激光技术, 2013, 37(4): 547-550. doi: 10.7510/jgjs.issn.1001-3806.2013.04.029
[8]	史彭 , 白冰 , 李隆 , 张琳丽 , 辛宇 . 端面抽运Nd：YAG圆棒热容激光晶体热分析. 激光技术, 2013, 37(3): 321-325. doi: 10.7510/jgjs.issn.1001-3806.2013.03.012
[9]	吴羽 , 龙晓莉 , 焦中兴 , 何广源 , 张倩 . 热透镜效应补偿的高功率Nd:YAG激光器的优化设计. 激光技术, 2015, 39(3): 377-380. doi: 10.7510/jgjs.issn.1001-3806.2015.03.021
[10]	李明海 , 柳爱国 , 宋耀祖 . 激光放大介质温度场和热应力场的数值模拟. 激光技术, 2002, 26(2): 86-89.
[11]	王秀凤 , 吕晓东 , 陈光南 , 胡世光 . 激光强化温度场的数值模拟与校验. 激光技术, 2004, 28(2): 162-165.
[12]	李贝贝 , 李小将 . 激光输能光电池温度场数值模拟. 激光技术, 2017, 41(4): 537-544. doi: 10.7510/jgjs.issn.1001-3806.2017.04.016
[13]	王文斌 , 郭子如 , 张阳 , 陈世雄 . 激光辐照下金属/炸药结构温度场的数值模拟. 激光技术, 2014, 38(5): 684-687. doi: 10.7510/jgjs.issn.1001-3806.2014.05.023
[14]	师文庆 , 杨永强 , 黄延禄 , 程大伟 . 选区激光熔化快速成型过程温度场数值模拟. 激光技术, 2008, 32(4): 410-412.
[15]	裴旭 , 吴建华 . 金属材料脉冲激光辐照瞬态温度场数值模拟研究. 激光技术, 2012, 36(6): 828-831. doi: 10.3969/j.issn.1001-3806.2012.06.029
[16]	梅丽芳 , 秦建红 , 严东兵 . 活性激光焊接304不锈钢温度场的数值与试验研究. 激光技术, 2020, 44(4): 492-496. doi: 10.7510/jgjs.issn.1001-3806.2020.04.016
[17]	余晓秋 , 李明中 , 王建军 , 耿远超 , 许党朋 , 林宏奂 , 张锐 , 黄小东 . 增益导引折射率反导引大模场光纤激光器特性分析. 激光技术, 2011, 35(1): 25-28,78. doi: 10.3969/j.issn.1001-3806.2011.01.008
[18]	雷震 , 张立文 , 张晓玲 , 孟庆端 . 高斯激光辐照焦平面探测器温度场分析与仿真. 激光技术, 2016, 40(4): 516-520. doi: 10.7510/jgjs.issn.1001-3806.2016.04.013
[19]	冯爱新 , 程昌 , 殷苏民 , 周建忠 , 唐翠屏 . 激光划痕法膜基界面的温度场及应力场分析. 激光技术, 2008, 32(5): 527-530.
[20]	杨富 , 黄伟 , 张彬 , 楚晓亮 , 刘志国 , 蔡邦维 . CO2激光辐照下光学薄膜的温度场与热畸变. 激光技术, 2004, 28(3): 255-258.

点击查看大图

计量

文章访问数: 3235
HTML全文浏览量: 710
PDF下载量: 306
被引次数: 0

姓名
邮箱
手机号码
标题
留言内容
验证码

留言板

LD抽运复合YAG晶体温度场及热透镜效应研究

作者简介: 李锋(1970- ),男,副教授,博士研究生,从事全固体激光器件研究..

通讯作者: 白晋涛, baijt@rnvu.edu.cn ;

Investigation on temperature and thermal lens effects of laser diode pumped composite YAG rods

Corresponding author: BAI Jin-tao, baijt@rnvu.edu.cn ;

计量

LD抽运复合YAG晶体温度场及热透镜效应研究

通讯作者: 白晋涛, baijt@rnvu.edu.cn;

作者简介: 李锋(1970- ),男,副教授,博士研究生,从事全固体激光器件研究.

English Abstract

Investigation on temperature and thermal lens effects of laser diode pumped composite YAG rods

Corresponding author: BAI Jin-tao, baijt@rnvu.edu.cn

全文HTML

目录

留言板

LD抽运复合YAG晶体温度场及热透镜效应研究

作者简介: 李锋(1970- ),男,副教授,博士研究生,从事全固体激光器件研究..

通讯作者: 白晋涛, baijt@rnvu.edu.cn ;

Investigation on temperature and thermal lens effects of laser diode pumped composite YAG rods

Corresponding author: BAI Jin-tao, baijt@rnvu.edu.cn ;

计量

出版历程

LD抽运复合YAG晶体温度场及热透镜效应研究

通讯作者: 白晋涛, baijt@rnvu.edu.cn;

作者简介: 李锋(1970- ),男,副教授,博士研究生,从事全固体激光器件研究.

English Abstract

Investigation on temperature and thermal lens effects of laser diode pumped composite YAG rods

Corresponding author: BAI Jin-tao, baijt@rnvu.edu.cn

全文HTML

目录