1 August 2003 Characterization of beam quality of high-energy laser
Author Affiliations +
Proceedings Volume 4948, 25th International Congress on High-Speed Photography and Photonics; (2003) https://doi.org/10.1117/12.516955
Event: 25th international Congress on High-Speed photography and Photonics, 2002, Beaune, France
Abstract
The paper is devoted to a study of methods for characterizing and diagnosing the beam quality of high energy laser. It begins with a review of the rationality and usability of the parameters that have been used for characterizing laser beam quality. Considering the specific characteristics of high energy laser, we suggest characterizing the beam quality of high energy laser with diffraction limit multiple β-factor and encircled energy ratio BQ. Then the selection of the referential (or ideal) beam for β-factor is discussed in detail and the far-field diffraction intensity distributions and divergent angles of various referential beams have been calculated and compared. The results show that among all of referential beams with the same diffraction area or external aperture size, the circular solid homogenous beam has the smallest far-field divergent angle, thus choosing such a beam as the ideal beam would be the most reasonable and strongly proposed. Finally, techniques for diagnosing the beam quality of high energy laser are presented.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wei Gao, Huiming Huang, "Characterization of beam quality of high-energy laser", Proc. SPIE 4948, 25th International Congress on High-Speed Photography and Photonics, (1 August 2003); doi: 10.1117/12.516955; https://doi.org/10.1117/12.516955
PROCEEDINGS
4 PAGES


SHARE
RELATED CONTENT

Development of ICF laser driver technology in China
Proceedings of SPIE (December 08 1997)
New computer-generated hologram
Proceedings of SPIE (September 22 1997)
Technical design of laser re-manufacturing technology
Proceedings of SPIE (October 06 2010)
Far-field Gaussian beam shaping under the diffraction limits
Proceedings of SPIE (September 29 2004)
Modern physical principles of laser ablation
Proceedings of SPIE (August 16 2000)

Back to Top