Submicroradian accuracy scanning system with a double-wedge rotating around the orthogonal axes

Anhu Li; Jianfeng Sun; Lijuan Wang; Liren Liu

doi:10.1117/12.612669

12 September 2005 Submicroradian accuracy scanning system with a double-wedge rotating around the orthogonal axes

Anhu Li, Jianfeng Sun, Lijuan Wang, Liren Liu

Proceedings Volume 5892, Free-Space Laser Communications V; 58921M (2005) https://doi.org/10.1117/12.612669
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

A scanning system of a high accuracy double-wedge is presented, which allows us to perform very small angle deviation of a passing beam in a simple way. The first wedge's principal section is perpendicular to the horizontal axis, and the second is to the vertical axis correspondingly. They respectively rotate around the horizontal axis and the vertical axis as they work. So different small rotation angles of two wedges determine the corresponding orientation and position of the passing beam, and then high accuracy and very small-angle beam deviation can be performed. According to the design result: when the wedge angle is 5°, the refraction light beam will change about 1μrad if the wedge is rotated 1arcmin; the scanning range of light beam in the horizontal direction and the vertical direction can be not less than 600μrad, and the scanning precision of the device can be superior to 0.2 micro μrad

Citation Download Citation

Anhu Li, Jianfeng Sun, Lijuan Wang, and Liren Liu "Submicroradian accuracy scanning system with a double-wedge rotating around the orthogonal axes", Proc. SPIE 5892, Free-Space Laser Communications V, 58921M (12 September 2005); https://doi.org/10.1117/12.612669

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