光学学报, 2021, 41 (2): 0232001, 网络出版: 2021-02-27
基于衍射光学元件的全光分幅成像技术 下载: 1182次
All-Optical Framing Imaging Technology Based on Diffractive Optical Elements
超快光学 分幅成像 二维成像 衍射光学元件 ultrafast optics framing imaging two-dimensional imaging diffractive optical element
摘要
超快成像技术可用于研究爆炸、高压放电等超快现象,其中,全光分幅成像技术可克服光电转换的时间限制,具有很大的发展前景。利用衍射光学元件和窄带滤波片搭建了全光空间分幅成像系统,成功实现阵列分幅成像,并分析了不同波段的成像效果。实验结果表明,所设计的全光空间分幅成像系统,可在不同波段内实现4×4阵列的16分幅成像;且图像幅间的非均匀性相对标准偏差为7.4%,幅内非均匀性均值为2.83%,全光分幅成像系统在分辨率为35 lp/mm时的调制传递函数为0.991。
Abstract
Ultrafast imaging is an important method for studying ultrafast phenomena such as explosions and high-voltage discharges. All-optical framing imaging has great development prospects because it can overcome the time limitation of optical-to-electric signal conversion. In this study, an all-optical spatial framing imaging system is constructed using a diffractive optical element and a band pass filter, the array framing imaging is successfully realized, and the results of different bands are analyzed. The experimental results show that the designed all-optical spatial framing imaging system can realize 16-framing imaging in a 4×4 array in different wavelength bands. The relative standard deviation of the non-uniformity between the image frames is 7.4%, and the average deviation of the non-uniformity within a frame is 2.83%. Further, the modulation transfer function of the all-optical framing imaging system is 0.991 at resolution of 35 lp/mm.
李彦锦, 周朗, 李卓, 施蕊, 王欣, 杨苏辉. 基于衍射光学元件的全光分幅成像技术[J]. 光学学报, 2021, 41(2): 0232001. Yanjin Li, Lang Zhou, Zhuo Li, Rui Shi, Xin Wang, Suhui Yang. All-Optical Framing Imaging Technology Based on Diffractive Optical Elements[J]. Acta Optica Sinica, 2021, 41(2): 0232001.