Abstract
Accurate and high dynamic range measurement of the three attitude variations (i.e., displacement, pitch, yaw angles) has been widely researched based on various approaches to meet different application requirements. However, none of the existing methods can detect these three attitude variations at the same time. This paper proposes a method based on a classical phase measuring deflectometry (PMD) system and a double iteration algorithm to simultaneously measure the three variations of the output mirror in a laser resonator. The relationship between the attitude variations and the lateral displacement parameters (LDP) of the imaged structural fringes is derived in the PMD system. Through the established relationship, the attitude variations could be calculated once the LDP are detected. Furthermore, a two-step measuring scheme combining the four-step shifting phase and the color-coded fringe is proposed to effectively detect the LDP. Finally, an experiment is conducted to verify the feasibility of the proposed method.
© 2020 Optical Society of America
Full Article | PDF ArticleMore Like This
Haolin Zhang, Igors Šics, Jon Ladrera, Marta Llonch, Josep Nicolas, and Juan Campos
Opt. Express 28(21) 31658-31674 (2020)
Yan Guo, Haobo Cheng, Yongfu Wen, and Yunpeng Feng
Appl. Opt. 59(8) 2262-2269 (2020)
Cheng Chen, Hongru Zhang, Shaoxuan Chen, Bing Liu, Kai Zhang, and Hongwei Ji
Appl. Opt. 59(2) 500-507 (2020)