Volume 32 Issue 7
Jun.  2020
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Ni Xiaolong, Zhu Xufang, Yu Xin, et al. Laser beam coherence and divergence angle complex controlling technique[J]. High Power Laser and Particle Beams, 2020, 32: 071008. doi: 10.11884/HPLPB202032.200078
Citation: Ni Xiaolong, Zhu Xufang, Yu Xin, et al. Laser beam coherence and divergence angle complex controlling technique[J]. High Power Laser and Particle Beams, 2020, 32: 071008. doi: 10.11884/HPLPB202032.200078

Laser beam coherence and divergence angle complex controlling technique

doi: 10.11884/HPLPB202032.200078
  • Received Date: 2020-03-25
  • Rev Recd Date: 2020-06-09
  • Publish Date: 2020-06-24
  • To reduce the complexity and cost of partially coherent optical system, increase the convenience of partially coherent laser beam application, in this paper, we presents a method to control the coherence and divergence angle of laser beam complexly, using a liquid crystal spatial light modulator (LC-SLM). First, we introduce the basic theory and method to control the coherence and divergence angle of laser beam complexly using an LC-SLM; then, we put forward the experiment to test the coherence and divergence angle controlling accuracy. The experiment results show that, for a partially coherent laser beam with the coherence and divergence angle of 0.9 mm, 7.5 mrad and 1.5 mm, 3.8 mrad, the error of coherence is less than 5%, the root-mean-square errors of the degree of coherence are 0.027 386 and 0.031 314, and the peak-to-valley values are 0.084 658 and 0.089 103 respectively; the error of divergence angle is less than 5%, the root-mean-square errors of the divergence angle are 0.022 478 and 0.023 186, and the peak-to-valley values are 0.081 201 and 0.092 130 respectively. This method can control degree of coherence and divergence angle with high accuracy.
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  • [1]
    Korotkova O, Andrews L C, Phillips R L. Speckle propagation through atmospheric turbulence: Effects of a random phase screen at the source[C]//International Symposium on Optical Science and Technology. 2002: 98-109.
    [2]
    Korotkova O, Andrews L C, Phillips R L. Model for a partially coherent Gaussian beam in atmospheric turbulence with application in Lasercom[J]. Optical Engineering, 2016, 43(2): 341.
    [3]
    Lee I E, Ghassemlooy Z, Ng W P, et al. Joint optimization of partially coherent Gaussian beam for free-space optical communication over turbulent channels with pointing errors[J]. Optics Letters, 2013, 38(3): 350-352. doi: 10.1364/OL.38.000350
    [4]
    Borah D K, Voelz D G. Spatially partially coherent beam parameter optimization for free space optical communications[J]. Opt Express, 2010, 18(20): 20746-20758. doi: 10.1364/OE.18.020746
    [5]
    柯熙政, 张宇. 部分相干光在大气湍流中的光强闪烁效应[J]. 光学学报, 2015, 35:0106001. (Ke Xizheng, Zhang Yu. Light intensity scintillation effect of partially coherent light in atmospheric turbulence[J]. Acta Photonica Sinica, 2015, 35: 0106001
    [6]
    李宜璋, 杨晖, 李然, 等. 激光散斑血流成像系统中的光源相干性[J]. 光学 精密工程, 2019, 27(10):2127-2135. (Li Yizhang, Yang Hui, Li Ran, et al. Coherence of light source in laser speckle blood flow imaging system[J]. Optics and Precision Engineering, 2019, 27(10): 2127-2135 doi: 10.3788/OPE.20192710.2127
    [7]
    柯熙政, 韩美苗, 王明军, 等. 部分相干光在大气湍流中斜程传输路径上的展宽与漂移[J]. 光子学报, 2015, 44:0306001. (Ke Xizheng, Han Meimiao, Wang Mingjun, et al. Spreading and wander of partially coherent beam through atmospheric turbulence in a slanted path[J]. Acta Photonica Sinica, 2015, 44: 0306001 doi: 10.3788/gzxb20154403.0306001
    [8]
    Jenkins M H, Long J M, Gaylord T K. Multifilter phase imaging with partially coherent light[J]. Appl Opt, 2014, 53(16): D29-D39. doi: 10.1364/AO.53.000D29
    [9]
    Deng P, Kavehrad M, Liu Z, et al. Capacity of MIMO free space optical communications using multiple partially coherent beams propagation through non-Kolmogorov strong turbulence[J]. Opt Express, 2013, 21(13): 15213-15229. doi: 10.1364/OE.21.015213
    [10]
    高明, 刘彦清, 王菲, 等. 偏振部分相干激光波束在湍流大气中传输的扩展和漂移[J]. 光子学报, 2014, 43:1001002. (Gao Ming, Liu Yanqing, Wang Fei, et al. Spread and wander characteristics of polarized and partially coherent laser beam propagated in turbulent atmosphere[J]. Acta Photonica Sinica, 2014, 43: 1001002 doi: 10.3788/gzxb20144310.1001002
    [11]
    Chen Chunyi, Yang Huamin, Zhou Zhou, et al. Effects of source spatial partial coherence on temporal fade statistics of irradiance flux in free-space optical links through atmospheric turbulence[J]. Opt Express, 2013, 24(21): 29731-29743.
    [12]
    倪小龙, 刘智, 姜会林, 等. 采用图形处理器加速的部分相干光实时生成方法[J]. 光子学报, 2016, 45:0310001. (Ni Xiaolong, Liu Zhi, Jiang Huilin, et al. Partially coherent beam real-time generation method accelerated by graphic processing unit[J]. Acta Photonica Sinica, 2016, 45: 0310001 doi: 10.3788/gzxb20164503.0310001
    [13]
    Jennifer C R, Davidson F M. Atmospheric turbulence effects on a partially coherent Gaussian beam: Implications for free-space laser communication[J]. J. Opt Soc Am A, 2002, 19(9): 1794-1801. doi: 10.1364/JOSAA.19.001794
    [14]
    Chen Chunyi, Yang Huamin, Kavehrad M, et al. Validity of quadratic two-source spherical wave structure functions in analysis of beam propagation through generalized atmospheric turbulence[J]. Optics Communications, 2014, 332: 343-349. doi: 10.1016/j.optcom.2014.07.040
    [15]
    Shirai T, Wolf E. Coherence and polarization of electromagnetic beams modulated by random phase screens and their changes on propagation in free space[J]. J Opt Soc Am A, 2004, 21(10): 1907-1916. doi: 10.1364/JOSAA.21.001907
    [16]
    张洁, 倪小龙, 刘智, 等. 高精度连续变倍率激光扩束系统设计[J]. 中国光学, 2019, 12(3):693-700. (Zhang Jie, Ni Xiaolong, Liu Zhi, et al. Design of high precision continuous variable magnification laser beam expansion system[J]. China Optics, 2019, 12(3): 693-700 doi: 10.3788/co.20191203.0693
    [17]
    刘春梅. 基于LCOS光学变焦系统研究[D]. 合肥: 安徽大学, 2013. 29-30

    Liu Chunmei. LCOS-based optical zoom system research[D]. Anhui: Anhui University, 2013, 29-30
    [18]
    许忠保, 王双迎, 刘文超, 等. 基于液晶空间光调制器的多焦菲涅尔透镜[J]. 光学 精密工程, 2016, 24(10s):156-161. (Xu Zhongbao, Wang Shuangying, Liu Wenchao et al. Multifocal Fresnel lens based on liquid crystal spatial light modulator[J]. Optics and Precision Engineering, 2016, 24(10s): 156-161
    [19]
    陈浩, 宣丽, 胡立发, 等. 1200 mm望远镜开环液晶自适应光学系统设计[J]. 光学 精密工程, 2010, 18(1):109-117. (Chen Hao, Xuan Li, Hu Lifa, et al. Design of 1200 mm telescope open-loop liquid crystal adaptive optical system[J]. Optics and Precision Engineering, 2010, 18(1): 109-117
    [20]
    Felde C V, Bogatyryova H V, Polyanskii P V, et al. Young's diagnostics of spatial coherence phase singularities[C]//Proc of SPIE. 2014: 62540D.
    [21]
    申琳, 杨进华, 韩福利, 等. 基于光斑图像的激光束散角测量方法研究[J]. 兵工学报, 2011, 32(7):890-895. (Shen Lin, Yang Jinhua, Han Fuli, et al. Research on laser beam divergence angle measurement method based on spot image[J]. Acta Armamentarii, 2011, 32(7): 890-895
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