Zhao Juanning, Dong Xiaona, Da Zhengshang, Li Hongguang. Dynamical focus position detection of single pulse high power laser system[J]. Infrared and Laser Engineering, 2014, 43(6): 1925-1929.
Citation:
|
Zhao Juanning, Dong Xiaona, Da Zhengshang, Li Hongguang. Dynamical focus position detection of single pulse high power laser system[J]. Infrared and Laser Engineering, 2014, 43(6): 1925-1929.
|
Dynamical focus position detection of single pulse high power laser system
- 1.
Xi'an Institute of Optics and Precision Mechanics of CAS,Xi'an 710119,China;
- 2.
University of Chinese Academy of Sciences,Beijing 100049,China
- Received Date: 2013-10-21
- Rev Recd Date:
2013-11-23
- Publish Date:
2014-06-25
-
Abstract
To tackle the problem that traditional focus measure technologies cannot measure the focus shifting caused by thermal distortion in single pulse high power laser system, a system, composed with double vertical wedge groups producing array spots, can make instantly focus measure available. Two pairs of wedge-mirror groups which are placed vertically to each other are utilized as beam splitting system in this system. All those rays are finally detected by a detector, and formed a matric of spots with various sizes. Through single detection of spots matrix, various focus position shifts and the focus shifting measurement of the high power laser with single shot are obtained. After theoretical analyzing, software simulating and experiment testing, this technique has the advantages such as the adjustable detecting accuracy and range, good disperse quality, and the ability of restraining the effect of parasitic light.
-
References
[1]
|
|
[2]
|
Peng Y F, Cheng Z H, Zhang Y N, et al. Temperature distributions and thermal deformations of mirror substrates[J]. Appl Opt, 2001, 40(27): 4824-4830. |
[3]
|
|
[4]
|
Wang Kuilong. Focal shift in focused anomalous hollow beam[J]. Infrared and Laser Engineering, 2012, 41 (4): 869-874. (in Chinese) 王奎龙. 聚焦异常空心光束的焦移[J]. 红外与激光工程, 2012, 41(4): 869-874. |
[5]
|
R Kings Lake. Applied Optical Engineering[M]. New York: Academic, 1965: 208. |
[6]
|
|
[7]
|
Wang Jianwei, An Zhiyong. Automatic measuring technology of optical system focal distance based on CCD[J]. Infrared and Laser Engineering, 2006, 35(21): 255-260. (in Chinese) 王建伟,安志勇. 基于CCD 的光学系统焦距自动测量技术[J]. 红外与激光工程, 2006, 35(21): 255-260. |
[8]
|
|
[9]
|
Greene P L, Hall D G. Focal shift in vector beams[J]. Opt Express, 1999, 4(10): 411-419. |
[10]
|
|
[11]
|
Priti Singh, Mohammad Shoeb. Measurement of focal length with phase-shifting Talbot interferometry[J]. Appl Opt, 2005, 44(9): 1572-1576. |
[12]
|
|
[13]
|
Kiyofumi Matsuda, Thomas H Barnes, Bob F Oreb, et al. Focal-lentgh measurement by multiple-beam shearing interferometry[J]. Appl Opt, 1999, 38(16): 3542-3548. |
-
-
Proportional views
-