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Proceedings Paper

Measurement of high-power laser resonator mirror's misalignment using PSD
Author(s): Lingxiang Zhang; Lei Fu; Hongmin Shi; Yaodong Lu
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Paper Abstract

PSD is the abbreviation of position sensitive detector, which can transform the light spot position on sensitive surface into photocurrent. Based on the structure, there are on-dimension PSD and two-dimension PSD. Recently PSD is mainly used in the position sensor based on the principle of optical triangulation. We use it as sensor in the control system of high-power laser resonator mirrors' misalignment in order to improve the quality of laser pattern. In this paper, we discuss the system, the theoretical model, the angle magnification technology, the control circuit of sensor signal, and the control executive part in details. At last, we introduce the experimental result.

Paper Details

Date Published: 10 October 2000
PDF: 6 pages
Proc. SPIE 4222, Process Control and Inspection for Industry, (10 October 2000); doi: 10.1117/12.403911
Show Author Affiliations
Lingxiang Zhang, Beijing Institute of Opto-Electronic Technology (China)
Lei Fu, Beijing Institute of Opto-Electronic Technology (China)
Hongmin Shi, Beijing Institute of Opto-Electronic Technology (China)
Yaodong Lu, Beijing Institute of Opto-Electronic Technology (China)


Published in SPIE Proceedings Vol. 4222:
Process Control and Inspection for Industry
Shulian Zhang; Wei Gao, Editor(s)

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