Improvement of antireflection coating on KTP crystal

WANG Rui-hua; LIU Xun-min; ZHU Li; HE Jing-liang

By redesigning the film with substituting SiO2 instead of MgF2 as the outer layer film,the frequency doubling anti-reflection coating on the KTP crystal is improved.After the KTP crystal with 1064nm and 532nm antireflection coating is applied in high power Q-switched Nd:YAG laser,any surface damage have not been observed even at intensity as high as 450MW/cm2 at a pulse repetition rate of 1kHz and 25ns of pulse duration.The experimental results show that both the surface quality and the optical property of the film have been improved.

1. Key Laboratory of Crystal Materials, Shandong University, Ji'nan 250100, China

Received Date: 2008-05-04

Accepted Date: 2008-07-09

Available Online: 2009-06-25

Abstract: By redesigning the film with substituting SiO2 instead of MgF2 as the outer layer film,the frequency doubling anti-reflection coating on the KTP crystal is improved.After the KTP crystal with 1064nm and 532nm antireflection coating is applied in high power Q-switched Nd:YAG laser,any surface damage have not been observed even at intensity as high as 450MW/cm2 at a pulse repetition rate of 1kHz and 25ns of pulse duration.The experimental results show that both the surface quality and the optical property of the film have been improved.

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Reference (14)

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Improvement of antireflection coating on KTP crystal

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References

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通讯作者: 陈斌, bchen63@163.com

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