Controlling the width-tunable 355nm pulses by means of 1064nm laser-induced plasma shutter
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1.
No.27 Institute, China Electronics Technology Group Corporation, Zhengzhou 450047, China;
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2.
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
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Received Date:
2008-12-01
Accepted Date:
2008-12-16
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Abstract
In order to obtain the width-tunable 355nm pulses,a 1064nm laser-induced plasma shutter was used to control the pulse width of 355nm pulses. The width tunable from 2.8ns to 10ns was obtained under the interaction of ionization of the Cu pinhole and the atmospheric breakdown. Firstly,the effect of 1064nm pulse energy on pulse compression was discussed, and the shortest output pulse with a width of 2.8ns was obtained without delay time between two laser paths. Subsequently, adopting the device for delay-time to vary the optical differences between two paths, the width-tunable 355nm laser pulses were obtained. Experimental results indicate that laser-induced plasma shutter is a better pulse-shaping means with simple configuration, convenient operation, and widespread applications.
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