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Proceedings Paper

Investigation of long pulse laser induced flame on Al in air using optical interferometry
Author(s): Hongchao Zhang; Jian Lu; Zhonghua Shen; Xiaowu Ni
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Paper Abstract

The process of long pulse laser(1ms) interaction with the aluminum plate was analyzed using Mach-Zehnder interferometer in this paper. A continuous semiconductor laser with about 50mW power and 532nm wavelength was used to detect the flame which induced by long pulse laser interaction with the aluminum plate. A high speed camera was used to capture the interferograms. The exposure time of the high speed camera is about 2 microseconds. And the frame rate is 2130fps. The high-speed camera and the long pulse laser pulse was synchronously controlled by the four-channel digital delay (Stanford Research Systems DG535).The FFT(Fast Fourier transform ) analysis is applied to extract the phase of the interferograms. The results provide an understanding of the process of long pulse laser drilling of the Al target.

Paper Details

Date Published: 16 May 2013
PDF: 7 pages
Proc. SPIE 8796, 2nd International Symposium on Laser Interaction with Matter (LIMIS 2012), 87960U (16 May 2013); doi: 10.1117/12.2011316
Show Author Affiliations
Hongchao Zhang, Nanjing Univ. of Science and Technology (China)
Jian Lu, Nanjing Univ. of Science and Technology (China)
Zhonghua Shen, Nanjing Univ. of Science and Technology (China)
Xiaowu Ni, Nanjing Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 8796:
2nd International Symposium on Laser Interaction with Matter (LIMIS 2012)
Stefan Kaierle; Jingru Liu; Jianlin Cao, Editor(s)

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