利用衍射理论对基模高斯光束进行整形

为了获得在液晶修复技术中所需要的光束质量好、能量分布比较均匀的矩形光束，提出了一种新的光束整形系统。在这个系统中，通过对光阑后不同位置衍射效应的理论分析和计算，获得相应的衍射光斑图样，再利用4f像传递系统对理想的光斑图样进行提取和传递，经过扩束聚焦之后，用于加工样品，并设计了相应的实验装置来验证这种系统的可行性。研究结果表明，过光阑后不同位置的衍射面呈现出复杂的衍射图样，等效距离在56.0~58.5 mm之间能够选取到平化效果非常好的衍射面，4f成像系统对其实现了较好的像传递，整形光束顶部的能量波动量小于5%，能量提取率达到80%。

Abstract

In order to obtain the rectangular beam required for liquid crystal display(LCD) repair technology with good beam quality and uniform energy distribution, a new beam shaping system has been proposed. In this system, related diffraction patterns can be obtained by calculating and analyzing the diffraction effects in theory at different positions through rectangular aperture, and a proper diffraction surface, which will be used to process the sample, can be extracted and transferred by using 4f image relaying system. In addition, a relevant experimental device has been designed to prove the feasibility of this system. The results show that there exit some of the complex diffraction patterns after passing through the aperture, and some diffraction planes with very good energy uniformity distribution can be selected in the 56.0~58.5 mm range of the equivalent distance. The effective delivery is achieved by the use of 4f imaging system, the fluctuation range of energy on the top of shaped beam is less than 5%, and energy efficiency is about 80%.

参考文献

[1] 宁继平, 李嘉强, 鲁笑春等. 激光用于LCD板ITO膜修复的研究［J］. 光电工程, 2003, 30(2): 15～20

Ning Jiping, Li Jiaqiang, Lu Xiaochun et al.. Study for application of laser to repairing ITO film on LCD board［J］. Opto-Electronic Engineering, 2003, 30(2): 15～20

[2] 王永青, 孙荣霞, 宗晓萍等. 液晶显示器生产中的激光退火和缺陷修复［J］. 激光杂志, 2002, 23(4): 1～2

Wang Yongqing, Sun Rongxia, Zong Xiaoping et al.. Laser annealing and repair processes of active matrix liquid crystal displays(AMLCI)［J］. Laser Journal, 2002, 23(4): 1～2

[3] 陈晓西, 黄子强, 杨文君. 光寻址液晶空间光调制器用于激光光束整形的可控系统和设计算法［J］. 红外与激光工程, 2010, 39(1): 47～50

Chen Xiaoxi, Huang Ziqiang, Yang Wenjun. Controllable system and design algorithm for laser beam shaping using optical addressing liquid crystal spatial light modulator［J］. Infrared and Laser Engineering, 2010, 39(1): 47～50

[4] 丁磊, 赵润昌, 李明中等. 反射式液晶光阀用于激光束空间整形可行性研究［J］. 强激光与粒子束, 2005, 17(6): 849～852

Ding Lei, Zhao Runchang, Li Mingzhong et al.. Feasibility study of liquid crystal light valve on beam shaping［J］. High Power Laser and Particle Beams, 2005, 17(6): 849～852

[5] 马浩统, 周朴, 王小林等. 基于液晶空间光调制器的激光束近场整形［J］. 光学学报, 2010, 30(7): 2032～2036

Ma Haotong, Zhou Pu, Wang Xiaolin et al.. Near-field beam shaping based on liquid crystal spatial light modulator［J］. Acta Optica Sinica, 2010, 30(7): 2032～2036

[6] 陈怀新, 隋展, 陈祯培等. 采用液晶空间光调制器进行激光光束的空间整形［J］. 光学学报, 2001, 21(9): 1107～1111

Chen Huaixin, Sui Zhan, Chen Zhenpei et al.. Laser beam shaping using liquid crystal spatial light modulator［J］. Acta Optica Sinica, 2001, 21(9): 1107～1111

[7] . Gaussian to uniform intensity shaper based on generalized phase contrast[J]. Opt. Express, 2008, 16(3): 1507-1516.

[8] 李俊昌, 郑启光, 凌东雄等. 强激光积分变换镜的光学性能及相关热作用［J］. 光电子·激光, 2002, 13(8): 767～772

Li Junchang, Zheng Qiguang, Ling Dongxiong et al.. Optical capability and relative heat action of a high-power integrating mirror［J］. J. Optoelectronics·Laser, 2002, 13(8): 767～772

[9] 林勇, 胡家升, 吴克难. 一种用于光束整形的衍射光学元件设计算法［J］. 光学学报, 2007, 27(9): 1682～1686

Lin Yong, Hu Jiasheng, Wu Kenan. Algorithm for the design of diffractive optical elements for laser beam shaping［J］. Acta Optica Sinica, 2007, 27(9): 1682～1686

[10] 张艳, 张静娟, 司徒国海. 高斯光束变换成方形均匀焦斑的衍射光学元件的研究［J］. 中国激光, 2004, 31(10): 1183～1187

Zhang Yan, Zhang Jingjuan, Situ Guohai. Investigation on diffractive optical elements for converting Gaussian beam into square uniform focused spot［J］. Chinese J. Lasers, 2004, 31(10): 1183～1187

[11] . . Study of an optical device for energy homogenization of a high power laser[J]. J. Laser Appl., 1999, 11(6): 279-283.

[12] . Ilya, Shadrivov, A. Andrey et al.. Beam shaping by a periodic structure with negative refraction[J]. Appl. Phys. Lett., 2003, 82(22): 3020-3822.

[13] 杨向通, 范薇. 利用双折射透镜组实现激光束的空间整形［J］. 光学学报, 2006, 26(11): 1698～1704

Yang Xiangtong, Fan Wei. Spatial laser beam shaping using brifringent lenses［J］. Acta Optica Sinica, 2006, 26(11): 1698～1704

[14] . Delmas. Calculation of diffraction patterns in spatial surface[J]. J. Opt. Soc. Am. A, 2007, 24(7): 1950-1954.

[15] . Diffraction transfer function and its calculation of classic diffraction formula[J]. Opt. Commun., 2007, 280(2): 243-248.

王小发, 康治军, 樊仲维, 连富强, 黄科, 余锦. 利用衍射理论对基模高斯光束进行整形[J]. 中国激光, 2011, 38(4): 0402006. Wang Xiaofa, Kang Zhijun, Fan Zhongwei, Lian Fuqiang, Huang Ke, Yu Jin. Beam Shaping of TEM00 Gaussian Beam by Using Diffraction Theory[J]. Chinese Journal of Lasers, 2011, 38(4): 0402006.

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