High quality beam shaping by square soft-edge diaphragm combined with liquid crystal spatial light modulator |
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| Authors: | Yunfeng Ma Zhongwei Fan Jisi Qiu Chengyong Feng Tianzhuo Zhao Weiran Lin The Academy of Opto-Electronics Chinese Academy of Sciences Beijing China Graduate University of Chinese Academy of Sciences Beijing China Beijing GK Laser Technology Co. Ltd Beijing China |
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| Affiliation: | Yunfeng Ma~3,Zhongwei Fan,Jisi Qiu Chengyong Feng,Tianzhuo Zhao,, Weiran Lin 1 The Academy of Opto-Electronics,Chinese Academy of Sciences,Beijing 100080,China 2 Graduate University of Chinese Academy of Sciences,Beijing 100049,China 3 Beijing GK Laser Technology Co.,Ltd,Beijing 100085,China |
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| Abstract: | The square soft-edge diaphragm with round angle is designed by Matlab,and is sent to a liquid crystal spatial light modulator by the computer.In order to obtain precompensation for the following laser system, local diaphragm transmission can be adjusted by feedback signals of surface-channel charge-coupled device (SCCD).This method can reduce the diffraction effect and realize no modulation,high stability,high homogeneity,and large scale laser beam.Several parameters of soft-edge diaphragms which affect the... |
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