Measurement of beam quality factor (M2) by slit-scanning method
β Scribed by Jiaan Zheng; Shengzhi Zhao; Qingpu Wang; Xingyu Zhang; Lei Chen
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 130 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0030-3992
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β¦ Synopsis
Beam quality factor (M 2 ) and far-ΓΏeld scattering angle of LD end-pump Nd : YVO4 laser were measured by slit-scanning method. The experimental results showed that the laser operated on a multi-mode state. The corresponding analytical treatments for slit-scanning method and M 2 factor measurement also were presented in this paper.
π SIMILAR VOLUMES
MUSIC superresolution algorithm can estimate the DOAs (directions of arrival) of multiple waves closing less than the beam width. However, the MUSIC algorithm is usually applied to a DBF (digital beam forming) array antenna, and it was difficult to apply the method to scanning beam radar, which has