Improving near field of high-power laser beams using two-photon absorption material

xie na; huang wanqing; guo yi; wang xiaodong; fang xiangyun; zhao yuxia; li qing; sun li; zhao runchang; su jingqin; zhu qihua

Volume 23 Issue 04

Apr. 2011

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Article Navigation > High Power Laser and Particle Beams > 2011 > 23(04): 0-

sheng jia-tian, mou wen-yong, li yun-sheng, et al. Influence of non-LTE radiation ablation on imploding neutron yield[J]. High Power Laser and Particle Beams, 2005, 17.

Citation:

xie na, huang wanqing, guo yi, et al. Improving near field of high-power laser beams using two-photon absorption material[J]. High Power Laser and Particle Beams, 2011, 23.

sheng jia-tian, mou wen-yong, li yun-sheng, et al. Influence of non-LTE radiation ablation on imploding neutron yield[J]. High Power Laser and Particle Beams, 2005, 17.

Citation:

xie na, huang wanqing, guo yi, et al. Improving near field of high-power laser beams using two-photon absorption material[J]. High Power Laser and Particle Beams, 2011, 23.

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Improving near field of high-power laser beams using two-photon absorption material

1.
Science and Technology on Plasma Physics Laboratory,Research Center of Laser Fusion,CAEP,P.O.Box 919-988,Mianyang 621900,China;
2.
Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China

Publish Date: 2011-04-14

Abstract

Abstract

Experiments have been conducted on the pumping system of the SILEX-Ⅰ ultra-short pulse laser facility to study the optical power limiting property of a two-photon absorption material and the improvement of near field uniformity using the material. The output laser beam from a flashlamp-pumped Nd:YAG laser SAGA was used to measure the optical limiting property of the material. The results show that the optical power limiting property is obvious. The transmission rate of the material is very high and it is greater than 90% when the input intensity is less than 0.60 GW/cm2. Moreover online experiments done on the pumping system show that, modulation of near field spots is reduced greatly after the beam passes through the material and thus near field uniformity is improved.
- high-power laser,
- beam quality,
- two-photon absorption material,
- optical power limiting property

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