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Proceedings Paper

Measurement of the coherence of multi-transverse-mode optical field based on liquid crystal spatial light modulator
Author(s): Hongmiao Zhao; Kun Xie; Qiong Zhou; Wenguang Liu
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Paper Abstract

In this paper, the fast measurement of the coherence of the multi-transverse-mode optical field is realized by using the intensity type of liquid crystal spatial light modulator (LC-SLM). Using the characteristic and advantage of the LC-SLM which can change the location of the light hole quickly and easily, and basing on the method of dual-hole interference, we divided the 650nm multi-transverse-modes laser spot into 4×4 points, and performed a quick scan with pairs of double holes of diameter 150μm. The contrast ratio of the interference patterns is computed by a self-made image processing software, and the coherence degree between the two points can be obtained. The experimental results show that the measurement system can accurately measure the coherence of multi-transverse-mode optical field within 10 seconds, which providing guideline for the further mode decomposition and beam control of multi-transverse-mode optical field.

Paper Details

Date Published: 15 November 2018
PDF: 6 pages
Proc. SPIE 10964, Tenth International Conference on Information Optics and Photonics, 109644P (15 November 2018); doi: 10.1117/12.2506165
Show Author Affiliations
Hongmiao Zhao, National Univ. of Defense Technology (China)
Kun Xie, National Univ. of Defense Technology (China)
Qiong Zhou, National Univ. of Defense Technology (China)
Wenguang Liu, National Univ. of Defense Technology (China)


Published in SPIE Proceedings Vol. 10964:
Tenth International Conference on Information Optics and Photonics
Yidong Huang, Editor(s)

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