Chinese Journal of Liquid Crystals and Displays, Volume. 37, Issue 11, 1430(2022)
Laser beam scatter angle control technology based on liquid crystal spatial light modulator
Fig. 1. Diagram of laser beam divergence angle increase control principle
Fig. 2. Diagram of laser beam divergence angle decrease control principle
Fig. 3. Principle diagram of laser beam divergence angle measurement
Fig. 5. Schemetic diagram of laser beam divergence angle control system
Fig. 6. Phase gray-scale images and corresponding spot images of LC-SLM with different focal lengths
Table 1. Performance parameters of spatial light modulator
View tableView in ArticleTable 1. Performance parameters of spatial light modulator
输出功率/mW 像素数 像素大小/μm 通光口径/mm 响应速率/Hz 0~20 1 920×1 152 9.2×9.2 17.7×10.6 70~90
Table 2. Camera performance parameters
View tableView in ArticleTable 2. Camera performance parameters
分辨率 像元尺寸/μm 光谱范围/nm 640×512 25×25 900~1 700
Table 3. Theoretical and experimental values of beam dispersion angle variation
View tableView in ArticleTable 3. Theoretical and experimental values of beam dispersion angle variation
/mm 理论束散角变化量/mrad 实验束散角变化量/mrad 80 -0.122 49 -0.113 87 85 -0.092 76 -0.109 04 90 -0.062 45 -0.047 36 95 -0.031 53 -0.039 72 100 0.000 00 0.008 56 105 0.032 17 0.023 26 110 0.064 97 0.079 80 115 0.098 50 0.134 61 120 0.132 70 0.121 03
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Shu-yi WANG, Zhi LIU, Peng LIN, Shu-tong LIU, Yi LIU. Laser beam scatter angle control technology based on liquid crystal spatial light modulator[J]. Chinese Journal of Liquid Crystals and Displays, 2022, 37(11): 1430
Category: Research Articles
Received: Jul. 14, 2022
Accepted: --
Published Online: Nov. 3, 2022
The Author Email: Zhi LIU (liuzhi@cust.edu.cn)
