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Examining second-harmonic generation of high-order Laguerre-Gaussian modes through a single cylindrical lens

机译:通过单个圆柱形镜头检查高阶Laguerre-高斯模式的二次谐波产生

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摘要

We experimentally investigate the second-harmonic generation of a high-order Laguerre-Gaussian (LG) mode under the quasi-phase-matching (QPM) configuration. First, we introduce a simple method to observe the azimuthal (l) and radial (p) indices of the high-order LG modes. Based on the astigmatic transformation technique, l and p are revealed in the number of dark stripes of the converted pattern in the focal plane. Then, using this efficient method of measurement, we demonstrate in experiments a second-harmonic LG mode with its radial and azimuthal indices being twice those of the inputted fundamental wave through QPM in a periodically poled KTP crystal. Our results provide a feasible way to obtain simultaneously the LG modes with larger radial and azimuthal indices. (C) 2017 Optical Society of America
机译:我们通过在准相位匹配(QPM)配置下,通过实验研究了高阶Laguerre-Gaussian(LG)模式的二次谐波产生。 首先,我们介绍了一种简单的方法来观察高阶LG模式的方位形(L)和径向(P)指数。 基于散光变换技术,L和P在焦平面中的转换图案的暗条状的数量中揭示。 然后,使用这种有效的测量方法,我们在实验中展示了第二次谐波LG模式,其径向和方位角指数是通过QPM在定期抛光的KTP晶体中通过QPM的QPM的两倍。 我们的结果提供了一种可行的方式,可以同时获得具有较大径向和方位角指数的LG模式。 (c)2017年光学学会

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  • 来源
    《Optics Letters》 |2017年第21期|共4页
  • 作者单位

    Nanjing Univ Natl Lab Solid State Microstruct Coll Engn &

    Appl Sci Nanjing 210093 Jiangsu Peoples R China;

    Nanjing Univ Natl Lab Solid State Microstruct Coll Engn &

    Appl Sci Nanjing 210093 Jiangsu Peoples R China;

    Nanjing Univ Natl Lab Solid State Microstruct Coll Engn &

    Appl Sci Nanjing 210093 Jiangsu Peoples R China;

    Nanjing Univ Natl Lab Solid State Microstruct Coll Engn &

    Appl Sci Nanjing 210093 Jiangsu Peoples R China;

    Nanjing Univ Natl Lab Solid State Microstruct Coll Engn &

    Appl Sci Nanjing 210093 Jiangsu Peoples R China;

    Nanjing Univ Natl Lab Solid State Microstruct Coll Engn &

    Appl Sci Nanjing 210093 Jiangsu Peoples R China;

    Nanjing Univ Natl Lab Solid State Microstruct Coll Engn &

    Appl Sci Nanjing 210093 Jiangsu Peoples R China;

    Nanjing Univ Natl Lab Solid State Microstruct Coll Engn &

    Appl Sci Nanjing 210093 Jiangsu Peoples R China;

    Nanjing Univ Natl Lab Solid State Microstruct Coll Engn &

    Appl Sci Nanjing 210093 Jiangsu Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;光学;
  • 关键词

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