The optical design of high-power laser-beam expander

GONG Dun; WANG Hong; TIAN Tie-yin; YUAN Jia-guang

doi:10.3969/j.issn.1001-3806.2009.04.027

GONG Dun, WANG Hong, TIAN Tie-yin, YUAN Jia-guang. The optical design of high-power laser-beam expander[J]. LASER TECHNOLOGY, 2009, 33(4): 426-428,436. DOI: 10.3969/j.issn.1001-3806.2009.04.027

Citation:

GONG Dun, WANG Hong, TIAN Tie-yin, YUAN Jia-guang. The optical design of high-power laser-beam expander[J]. LASER TECHNOLOGY, 2009, 33(4): 426-428,436. DOI: 10.3969/j.issn.1001-3806.2009.04.027

Citation:

GONG Dun, WANG Hong, TIAN Tie-yin, YUAN Jia-guang. The optical design of high-power laser-beam expander[J]. LASER TECHNOLOGY, 2009, 33(4): 426-428,436. DOI: 10.3969/j.issn.1001-3806.2009.04.027

The optical design of high-power laser-beam expander

Graphical Abstract

Graphical Abstract

Abstract

Abstract

In order to make a laser beam expander work a long time under high power laser radiation,on the base of the traditional multi-wavelength laser-beam expander,a two-serial expander with magnification of 2.3 and 6 respectively was designed through modifying the optical material and configuration.The expander was optimized and its image quality was analyzed with optical design software.After the expander was manufactured,experiments were performed in practical environment.It could work for a long time under laser radiation with pulse interval of 5s at high peak power up to 20MW,the output beam diameters were 24.5mm and 154.8mm respectively at 1m behind the expender with the characteristic of Gaussian-beam kept very well.The result indicates that the expender meets the design requirement and is practical.