Single acousto-optic tunable filter based double filtering imaging system

Xiaofa Zhang; Zhenfei Sheng; Yaqi Chen; Chunguang Zhang; Hao Wang; Xi Huang; Zhiwei Tan; Weijie Qiu; Pengchong Wang; Wenyao Liu; Maoqiang Duan; Xiaoli Huang; Ruoling Zheng; Xueqing Zeng; Rongcheng Lai; Jiaying Yu

doi:10.1117/12.2533586

17 May 2019 Single acousto-optic tunable filter based double filtering imaging system

Xiaofa Zhang, Zhenfei Sheng, Yaqi Chen, Chunguang Zhang, Hao Wang, Xi Huang, Zhiwei Tan, Weijie Qiu, Pengchong Wang, Wenyao Liu, Maoqiang Duan, Xiaoli Huang, Ruoling Zheng, Xueqing Zeng, Rongcheng Lai, Jiaying Yu

Author Affiliations +

Proceedings Volume 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019); 1117022 (2019) https://doi.org/10.1117/12.2533586
Event: Fourteenth National Conference on Laser Technology and Optoelectronics, 2019, Shanghai, China

Abstract

The double filtering system based on single crystal acousto-optic tunable filter (AOTF) in order to improve spectral resolution and reduce side lobe is designed and demonstrated. The effects of single filtering and double filtering on AOTF performance are analyzed. Furthermore, the proposed double filtering technology has the characteristics of high speed, strong stability, flexible tuning, narrow bandwidth and multi-wavelength selection. In this experiment, the spectral bandwidth, side lobe and diffraction efficiency of single filtering and single crystal double filtering in visible range are measured. A double optical wedge compensator is set up at the exit of the double filtering experiment system to compensate the diffracted light drift caused by chromatic aberration. In conclusion, the experimental method of double filtering based on single crystal of tellurium dioxide is better than that of single filtering in spectral resolution and side lobe suppression.

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Xiaofa Zhang, Zhenfei Sheng, Yaqi Chen, Chunguang Zhang, Hao Wang, Xi Huang, Zhiwei Tan, Weijie Qiu, Pengchong Wang, Wenyao Liu, Maoqiang Duan, Xiaoli Huang, Ruoling Zheng, Xueqing Zeng, Rongcheng Lai, and Jiaying Yu "Single acousto-optic tunable filter based double filtering imaging system", Proc. SPIE 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019), 1117022 (17 May 2019); https://doi.org/10.1117/12.2533586

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KEYWORDS

Acousto-optics

Optical filters

Tunable filters

Crystals

Ultrasonics

Diffraction

Image filtering

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