高级检索

负支离轴共焦非稳腔过量噪声的研究

吴超, 唐霞辉, 李根, 王炜, 王振

吴超, 唐霞辉, 李根, 王炜, 王振. 负支离轴共焦非稳腔过量噪声的研究[J]. 激光技术, 2016, 40(6): 882-887. DOI: 10.7510/jgjs.issn.1001-3806.2016.06.022
引用本文: 吴超, 唐霞辉, 李根, 王炜, 王振. 负支离轴共焦非稳腔过量噪声的研究[J]. 激光技术, 2016, 40(6): 882-887. DOI: 10.7510/jgjs.issn.1001-3806.2016.06.022
WU Chao, TANG Xiahui, LI Gen, WANG Wei, WANG Zhen. Research on excess noise in negative-branch off-axis confocal unstable resonators[J]. LASER TECHNOLOGY, 2016, 40(6): 882-887. DOI: 10.7510/jgjs.issn.1001-3806.2016.06.022
Citation: WU Chao, TANG Xiahui, LI Gen, WANG Wei, WANG Zhen. Research on excess noise in negative-branch off-axis confocal unstable resonators[J]. LASER TECHNOLOGY, 2016, 40(6): 882-887. DOI: 10.7510/jgjs.issn.1001-3806.2016.06.022

负支离轴共焦非稳腔过量噪声的研究

基金项目: 

高等学校博士学科点专项科学研究基金资助项目(20110142110046);中央高校基本科研业务费资助项目(HUST2013TS048);武汉市晨光计划资助项目(201307070410006)

详细信息
    作者简介:

    吴超(1984-),男,博士研究生,主要从事激光传输与数值算法等方面的研究。

    通讯作者:

    唐霞辉

  • 中图分类号: O436

Research on excess noise in negative-branch off-axis confocal unstable resonators

  • 摘要: 为了解决条状负支离轴非稳腔输出线宽增宽的问题,分析非稳腔的主要两个参量有效菲涅耳数Neff和几何放大率M与输出模式的过量噪声因子K取值的函数关系,从负支腔的具体结构出发,采用经典波动方程的理论唯像的将过量噪声因子表示成输出平面横模分布的泛函,利用边界衍射波的方法将输出横模近似地解析表述成Neff和M的函数。利用该关系数值计算了K随Neff和M变化的情况。结果表明,K随Neff呈现准周期性变化,在Neffs+0.85处(s为正整数)呈现周期性峰值,输出线宽将被增宽到自然线宽的2000倍左右。该研究对分析非稳腔的输出损耗是有帮助的,并为实际激光器的设计提供了参考。
    Abstract: In order to reduce the broadening of output beam line width in negative-branch off-axis unstable resonator laser, the function relationship between the two main parameters of effective Fresnel number Neff and geometry magnification M and excess noise factor K of output mode was analyzed. From negative branch structure, excess noise factor was firstly presented as functional distribution of transverse mode in output plane based on classical wave equation theory. By using the edge wave method, output transverse mode was approximated as a function of Neff and M. And then, the dependence of K on Neff and M were numerical calculated. The results indicate that K changes quasi-periodically with Neff. The cyclical peak is presented at Neffs+0.85 (s is a positive integer). Output line width is broadened nearly 2000 times of the natural line width. The study is useful for the research of output loss of unstable resonator and provides reference for practical laser designs.
  • [1]

    OU T Y, ZHANG N, PANG Q S, et al. Study on high power green lasers with unstable resonators[J]. Laser Technology, 2012, 36(1):87-89(in Chinese).

    [2]

    WANG C Sh, LI L, SHANG W D, et al. Study on pulsed solid-state lasers with positive branch confocal unstable resonators[J]. Laser Technology, 2013, 37(4):441-444(in Chinese).

    [3]

    PETERMANN K. Calculated spontaneous emission factor for double-heterostructure injection lasers with gain-induced waveguiding[J]. IEEE Journal of Quantum Electronics, 1979, 15(7):566-570.

    [4]

    HAUS H, KAWAKAMI S. On the excess spontaneous emission factor in gain-guided laser amplifiers[J]. IEEE Journal of Quantum Electronics, 1985, 21(1):63-69.

    [5]

    SIEGMAN A E. Excess spontaneous emission in non-Hermitian optical systems[J]. Physical Review, 1989, A39(3):1253-1263.

    [6]

    KARMAN G P, McDONALD G S, WOERDMAN J P, et al. Excess-noise dependence on intracavity aperture shape[J]. Applied Optics, 1999, 38(33):6874-6878.

    [7]

    van der LEE A M, van DRUTEN N J, MIEREMET A L, et al. Excess quantum noise due to nonorthogonal polarization modes[J]. Physical Review Letters, 1997, 79(22):4357-4360.

    [8]

    BERRY M V. Mode degeneracies and the petermann excess-noise factor for unstable lasers[J]. Journal of Modern Optics, 2003, 50(1):63-81.

    [9]

    LI Zh M, XIN J G. Power output characteristics of RF excited all metal slab waveguide CO2 laser[J]. Infrared and Laser Engineering, 2008, 37(2):230-232(in Chinese).

    [10]

    ZHDANOV B V, SHAFFER M K, KNIZE R J. Cs laser with unstable cavity transversely pumped by multiple diode lasers[J]. Optics Express, 2009, 17(17):14767-14770.

    [11]

    CIOFINI M, FAVILLA E, LAPUCCI A, et al. Propagation parameters of the beam extracted from a diode pumped Nd: YAG ceramic slab laser with a hybrid stable-unstable resonator[J]. Optics Laser Technology, 2007, 39(7):1380-1388.

    [12]

    ZHAO S, HUANG H T, HE J L, et al. High beam quality and compact diode end-pumped Nd:[KG-*2/3] YVO4 slab laser with a hybrid resonator[J]. Laser Physics, 2010, 20(4):781-785.

    [13]

    CHO C Y, HUANG Y P, HUANG Y J, et al. Compact high-pulse-energy passively Q-switched Nd:[KG-*2/3] YLF laser with an ultra-low-magnification unstable resonator:application for efficient optical parametric oscillator[J]. Optics Express, 2013, 21(2):1489-1495.

    [14]

    HALL T, DUSCHEK F, GRUNEWALD K M, et al. Modified negative-branch confocal unstable resonator[J]. Applied Optics, 2006, 45(34):8777-8780.

    [15]

    PARGMANN C, HALL T, DUSCHEK F, et al. Off-axis negative-branch unstable resonator in rectangular geometry[J]. Applied Optics, 2011, 50(1):11-16.

    [16]

    HALL T, DUSCHEK F, GRUNEWALD K M, et al. Modified negative-branch confocal unstable resonator[J]. Applied Optics, 2006, 45(34):8777-8780.

    [17]

    LAUDER M A, NEW G H C. Biorthogonality properties and excess noise factors of unstable optical resonators[J]. Optics Communications, 1988, 67(5):343-348.

    [18]

    CHEN K, ZHU D X, ZHANG P C. Mode analysis of laser resonator based on finite element matrix[J]. Laser Technology, 2014, 38(3):352-356(in Chinese).

    [19]

    LI G, LIANG Y W, TANG X, et al. The approximate analytic solution for the mode of strip negative branch unstable resonators[J]. Optics Communications, 2014, 330(5):71-76.

    [20]

    LI G, TANG X, WANG D, et al. Excess noise in strip off-axis confocal unstable resonators[J]. Journal of Modern Optics, 2012, 59(3):235-240.

  • 期刊类型引用(0)

    其他类型引用(1)

计量
  • 文章访问数:  3
  • HTML全文浏览量:  0
  • PDF下载量:  4
  • 被引次数: 1
出版历程
  • 收稿日期:  2015-10-21
  • 修回日期:  2016-01-07
  • 发布日期:  2016-11-24

目录

    /

    返回文章
    返回