Investigation of long pulse laser induced flame on Al in air using optical interferometry

摘要：

　　The process of long pulse laser(lms) 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 AI target.

关键词： Mach-Zehnder interferometer laser drilling long pulse laser FFT

作者: Hongchao Zhang Jian Lu Zhonghua Shen Xiaowu Ni

作者单位: School of Science,Nanjing University of Science and Technology,Nanjing 210094,Peoples Republic of China

会议类型: 国际会议

会议名称: The 2nd International Symposium on Laser Interaction with Matter (LIMIS 2012)第二届激光与物质相互作用国际会议

会议地点: 西安

会议语种:英文

页码: 201-207

在线出版日期: 2012-09-09（万方平台首次上网日期，不代表论文的发表时间）