Research of laser-focusing method while measuring the damage threshold on optical material surface

DONG Ze-jun; YANG Hao-dong; ZHU Zhi-wu

doi:10.7510/jgjs.issn.1001-3806.2013.05.023

A new laser focusing method was proposed to reduce the nonlinear optical effect for the measurement of damage threshold on optical material surfaces. The focus is located by utilizing the plasma beam as the reference object which is emitted by the air ionization. In the focusing process, an image is formed by a plasma luminous point which is formed by the air ionization. Based on the mirror image principle, the sample surface is in the middle of the luminous point and the image, the focusing process is completed when the luminous point and the image coincide. In conclusion, the method is simple operation and high precision, it is important to the measurement of damage threshold on optical material surfaces.

Research of laser-focusing method while measuring the damage threshold on optical material surface

1. Luoyang Electronic Equipment Test Center of China, Luoyang 471003, China

Received Date: 2012-12-31

Accepted Date: 2013-03-01

Available Online: 2013-09-25

Abstract: A new laser focusing method was proposed to reduce the nonlinear optical effect for the measurement of damage threshold on optical material surfaces. The focus is located by utilizing the plasma beam as the reference object which is emitted by the air ionization. In the focusing process, an image is formed by a plasma luminous point which is formed by the air ionization. Based on the mirror image principle, the sample surface is in the middle of the luminous point and the image, the focusing process is completed when the luminous point and the image coincide. In conclusion, the method is simple operation and high precision, it is important to the measurement of damage threshold on optical material surfaces.

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Reference (10)

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Research of laser-focusing method while measuring the damage threshold on optical material surface

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