Abstract

Laser pointing unit using tilting orthogonal double prisms (TODP) opens up a promising avenue for fine pointing in free-space laser communication, which can steer the laser beam with a pointing precision upon submicroradian order. How to obtain accurate inverse solutions is a basic issue for TODP systems. In this paper, a lookup-table method combined with the binary search procedure is demonstrated, and an iterative method that converges to the inverse solution by gradually reducing the search region is also investigated. The simulation results show that both methods can reach the pointing precision of micrometer order (namely submicroradian order after unit conversion) at a pointing distance of 400 mm, which can well meet the requirement of high-accuracy laser beam pointing applications.

Inverse solutions for tilting orthogonal double prisms

Anhu Li, Ye Ding, Yongming Bian, and Liren Liu
Appl. Opt. 53(17) 3712-3722 (2014)

Performance characterization of scanning beam steered by tilting double prisms

Anhu Li, Wanli Yi, Qiyou Zuo, and Wansong Sun
Opt. Express 24(20) 23543-23556 (2016)

Application of derivative matrices of skew rays to direct and inverse problems of Risley and tilting orthogonal double-prism systems

Psang Dain Lin and R. Barry Johnson
J. Opt. Soc. Am. A 34(12) 2203-2212 (2017)

Inverse solutions for a Risley prism scanner with iterative refinement by a forward solution

Anhu Li, Xinjian Gao, Wansong Sun, Wanli Yi, Yongming Bian, Hongzhan Liu, and Liren Liu
Appl. Opt. 54(33) 9981-9989 (2015)

Research on a scanner for tilting orthogonal double prisms

Anhu Li, Liren Liu, Jianfeng Sun, Xianghong Zhong, Lijuan Wang, Dean Liu, and Zhu Luan
Appl. Opt. 45(31) 8063-8069 (2006)