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

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.

The optical design of high-power laser-beam expander

Corresponding author: GONG Dun, wanghong@ciomp.ac.cn;

1. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Science, Changchun 130022, China;

2. Graduate School, Chinese Academy of Sciences, Beijing 100049, China;

3. Changchun Office of Shenyang Army Branch, GeneralArmament Department of the Chinese People's Liberation Army, Changchun 130022, China

Received Date: 2008-05-28

Accepted Date: 2008-10-07

Available Online: 2009-08-25

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.

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Reference (11)

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The optical design of high-power laser-beam expander

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References

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