基于振动弛豫理论提高光抽运太赫兹激光器输出功率的研究

张会云; 刘蒙; 张玉萍; 何志红; 申端龙; 吴志心; 尹贻恒; 李德华

doi:10.7498/aps.63.010702

摘要

以半经典密度矩阵理论和分子振动弛豫理论为基础，研究添加适当比例缓冲气体与适当减小波导芯径对光抽运太赫兹激光器输出光强的影响. 计算结果表明，加入适当比例缓冲气体或适当减小波导的芯径均能提高太赫兹激光的输出光强；同时优化两个参数能进一步提高抽运激光能量转化为太赫兹激光能量的效率，延长工作腔中的有效激活区，延缓抽运饱和效应的出现，提高太赫兹激光输出光强. 该研究对提高光抽运太赫兹激光器的能量转化效率、提高光抽运太赫兹激光器的输出功率及实现光抽运太赫兹激光器的小型化有重要的指导意义.

关键词:

Abstract

Based on the semiclassical density matrix theory and vibrational relaxation theory, the present paper studies the influences on optical pumping THz lasers output power due to adding an appropriate proportion of buffer gas and appropriately reducing the waveguide core diameter. Results prove that adding appropriate proportion of buffer gas or appropriately reducing the waveguide core diameter can increase the output of light intensity of THz laser. Optimizing the two parameters at the same time can further improve the efficiency of pumping laser energy into THz laser energy, extend the effective activation area of the working cavity, put off the appearance of the pumping saturation effect, and increase the output power of the THz lasers. This research may have a guiding significance for the THz optical pumping laser in improving energy conversion efficiency, and increasing the output power so as to bring about the miniaturization of THz optical pumping laser.

Keywords:

作者及机构信息

1.
山东科技大学理学院, 青岛市太赫兹技术重点实验室, 青岛 266510;

2.
电子科技大学中山学院电子工程系, 中山 528402

基金项目: 国家自然科学基金（批准号：61001018）、山东省自然科学基金（批准号：ZR2011FM009，ZR2012FM011）、山东科技大学杰出青年科学基金（批准号：2010KYJQ103）、山东科技大学科研创新团队支持计划项目（批准号：2012KYTD103）、山东省高等学校科技计划项目（批准号：J11LG20）资助、青岛市科技计划项目（批准号：11-2-4-4-（8）-jch）、青岛经济技术开发区重点科技计划项目（批准号：2013-1-64）和山东科技大学科技创新基金（批准号：YCB120173）资助的课题.

Authors and contacts

1.
Qingdao Key Laboratory of Terahertz Technology, College of Science, Shandong University of Science and Technology, Qingdao 266510, China;

2.
Department of Electronic Engineering, University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528402, China

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 61001018), the Natural Science Foundation of Shandong Province, China (Grant Nos. ZR2011FM009, ZR2012FM011), the Research Fund of Shandong University of Science and Technology (SDUST), China (Grant No. 2010KYJQ103), the SDUST Research Fund (Grant No. 2012KYTD103), the Shandong Province Higher Educational Science and Technology Program, China (Grant No. J11LG20), the Qingdao Science & Technology Project, China (Grant No. 11-2-4-4-(8)-jch), the Qingdao Economic & Technical Development Zone Science & Technology Project, China (Grant No. 2013-1-64), and the Shandong University of Science and Technology Foundation, China (Grant No. YCB120173).

参考文献

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[2]	Jiu Z X, Zuo D L, Miao L, Cheng Z H 2010 Journal of Infrared Millimeter and Terahertz Waves 31 1422
[3]	Miao L, Zuo D L, Jiu Z X, Cheng Z H 2011 High Power Laser and Particle Beams 23 2565 (in Chinese) [苗亮, 左都罗, 纠智先, 程祖海 2011 强激光与粒子束 23 2565]
[4]	Mueller E R, Henschke R, Robotham W E 2007 Appl. Opt. 46 4907
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[9]	Behn R, Kjelberg I, Morgan P D, Okada T, Siegrist M R 1983J. Appl. Phys. 54 2995
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[14]	He Z H, Yao J Q, Shi H F, Huang X, Luo X Z, Jiang S J, Wang P 2007 Acta. Phys. Sin. 56 5802 (in Chinese) [何志红, 姚建铨, 时华锋, 黄晓, 罗锡璋, 江绍基, 王鹏 2007 物理学报 56 5802]
[15]	He Z H, Yao J Q, Shi H F, Huang X, Luo X Z, Jiang S J, Li J R, Wang P 2007 Acta. Phys. Sin. 56 6451 (in Chinese) [何志红, 姚建铨, 时华锋, 黄晓, 罗锡璋, 江绍基, 李建荣, 王鹏 2007 物理学报 56 6451]
[16]	Zhang P, Jiang A J, Chen M N, Luo X Z, Zhang X 2004 Journal of Optoelectronics·Laser 15 1040 (in Chinese) [张萍, 蒋爱军, 陈曼娜, 罗锡璋, 张迅 2004 光电子·激光 15 1040]
[17]	Qin J Y, Zheng X S, Luo X Z, Huang X, Lin Y K 1998 IEEE Journal of Quantum Electronics 34 32
[18]	Liu Y, Xu J, Lai J Q, Xu X, Shen F, Wei Y Y, Huang M Z, Tang T, Gong Y B 2012 Chin. Phys. B 21 074202
[19]	Xie H Y, Wang L, Zhao L J, Zhu H L, Wang W 2007 Chin. Phys. 16 1459
[20]	Chang T Y, Lin C 1976 J. Opt Soc Am. 66 362
[21]	Redon M, Gastaud C, Fourrier M 1979 IEEE J. Q. E 15 412
[22]	Lawandy N M, Koepf G A 1980 Opt. Lett. 5 366
[23]	Schwartz R N, Slawsky Z I, Herzfeld K F 1952 J. Cherm. Phys. 20 1591
[24]	Frank I, Tanczos, 1956 J. Cherm. Phys. 25 439
[25]	Dickens P G, Ripamonti A 1961 Trans. Faraday Soc. 57 735

施引文献

[1]	Jiu Z X, Zuo D L, Miao L, Qi C C, Cheng Z H 2010 Chin. Phys. Lett. 27 24211
[2]	Jiu Z X, Zuo D L, Miao L, Cheng Z H 2010 Journal of Infrared Millimeter and Terahertz Waves 31 1422
[3]	Miao L, Zuo D L, Jiu Z X, Cheng Z H 2011 High Power Laser and Particle Beams 23 2565 (in Chinese) [苗亮, 左都罗, 纠智先, 程祖海 2011 强激光与粒子束 23 2565]
[4]	Mueller E R, Henschke R, Robotham W E 2007 Appl. Opt. 46 4907
[5]	Federici J F, Schulkin B, Huanget F 2005 Semicond. Sci. Technol. 20 S266
[6]	Fu S Y, Tian Z S, Yi F L J 2008 Harbin Institute of Technology 40 435 (in Chinese) [付石友, 田兆硕, 衣福龙 2008 哈尔滨工业大学学报 40 435]
[7]	Wu L, Ling F R, Liu J S 2009 Laser & Optoelectronics Progress 46 29 (in Chinese) [吴亮, 凌福日, 刘劲松 2009 激光与光电子学进展 46 29]
[8]	Thomas A, Detemple 1976 IEEE J. Quant. Electron. 12 40
[9]	Behn R, Kjelberg I, Morgan P D, Okada T, Siegrist M R 1983J. Appl. Phys. 54 2995
[10]	Behn R, Dupertuis R, Kjelberg M A, Krug I, Salito P, Siegrist S 1985 IEEE J. Quant. Electron. 21 1278
[11]	Hodges D T, Tucker J R, Hartwick T S 1976 Infrared Phys. 16 175
[12]	Mansfield D K, Horlbeck E, Bennett C L, Chouinard R 1985 International Journal of Infrared and Millimeter Waves 6 867
[13]	Chang T Y, Lin C 1976 J. Opt. Soc. Am. 66 362
[14]	He Z H, Yao J Q, Shi H F, Huang X, Luo X Z, Jiang S J, Wang P 2007 Acta. Phys. Sin. 56 5802 (in Chinese) [何志红, 姚建铨, 时华锋, 黄晓, 罗锡璋, 江绍基, 王鹏 2007 物理学报 56 5802]
[15]	He Z H, Yao J Q, Shi H F, Huang X, Luo X Z, Jiang S J, Li J R, Wang P 2007 Acta. Phys. Sin. 56 6451 (in Chinese) [何志红, 姚建铨, 时华锋, 黄晓, 罗锡璋, 江绍基, 李建荣, 王鹏 2007 物理学报 56 6451]
[16]	Zhang P, Jiang A J, Chen M N, Luo X Z, Zhang X 2004 Journal of Optoelectronics·Laser 15 1040 (in Chinese) [张萍, 蒋爱军, 陈曼娜, 罗锡璋, 张迅 2004 光电子·激光 15 1040]
[17]	Qin J Y, Zheng X S, Luo X Z, Huang X, Lin Y K 1998 IEEE Journal of Quantum Electronics 34 32
[18]	Liu Y, Xu J, Lai J Q, Xu X, Shen F, Wei Y Y, Huang M Z, Tang T, Gong Y B 2012 Chin. Phys. B 21 074202
[19]	Xie H Y, Wang L, Zhao L J, Zhu H L, Wang W 2007 Chin. Phys. 16 1459
[20]	Chang T Y, Lin C 1976 J. Opt Soc Am. 66 362
[21]	Redon M, Gastaud C, Fourrier M 1979 IEEE J. Q. E 15 412
[22]	Lawandy N M, Koepf G A 1980 Opt. Lett. 5 366
[23]	Schwartz R N, Slawsky Z I, Herzfeld K F 1952 J. Cherm. Phys. 20 1591
[24]	Frank I, Tanczos, 1956 J. Cherm. Phys. 25 439
[25]	Dickens P G, Ripamonti A 1961 Trans. Faraday Soc. 57 735

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