外文题目: Large-aperture laser beam alignment system based on far-field sampling technique
作者: Zhang, J. C.; Liu, D. Z.; Oyang, X. P.; Kang, J.; Xie, X. L.; Zhou, J.; Gong, L.; Zhu, B. Q.
刊名: Proc.SPIE
来源图书: HIGH-POWER LASERS AND APPLICATIONS VIII
年: 2016 卷: 10016 文章编号：100160I
会议名称: Conference on High-Power Lasers and Applications VIII
英文关键词:
laser technique; beam alignment; far-field; large-aperture beam; near field; imaging system
英文摘要:
Laser beam alignment is very important for high-power laser facility. Long laser path and large-aperture lens for alignment are generally used, while the proposed alignment system with a wedge by far-field sampling technique reduces both space and cost requirements. General alignment system for large-aperture laser beam is long in distance and large in volum because of taking near-field sampling technique. With the development of laser fusion facilities, the space for alignment system is limited. A new alignment system for large-aperture laser beam is designed to save space and reduce operating costs. The new alignment for large-aperture laser beam with a wedge is based on far-field sampling technique. The wedge is placed behind the spatial filter to reflect some laser beam as signal light for alignment. Therefore, laser beam diameter in alignment system is small, which can save space for the laser facility. Comparing to general alignment system for large-aperture laser beam, large-aperture lenses for near-field and far-field sampling, long distance laser path are unnecessary for proposed alignment system, which saves cost and space greatly. This alignment system for large-aperture laser beam has been demonstrated well on the Muliti-PW Facility which uses the 7th beam of the SG-II. Facility as pump source. The experimental results indicate that the average near-field alignment error is less than 1% of reference, and the average far-filed alignment error is less than 5% of spatial filter pinhole diameter, which meet the alignment system requirements for laser beam of Multi-PW Facility.


文献类型: 会议论文
正文语种: English
收录类别: ISTP
DOI: 10.1117/12.2245743


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