[1] [1] Zhang Chaofan. The improvement and realization of laser eavesdropping［J］. Laser & Infrared, 2008, 38(2): 145～148

[2] [2] Luo Haijun, Zhu Xiao. Rearch on laser eavesdropping technique［J］. Laser & Optoelectronics Progress, 2003, 40(12): 53～56

[3] [3] J. H. Shang, Y. He, D. Liu et al.. Laser Doppler vibrometer for real-time speech-signal acquirement［J］. Chin. Opt. Lett., 2009, 7(8): 732～733

[4] [4] Ning Qingsong, Ma Xiaolong, Yang Zhen. Experimental research on laser eavesdvopping [J]. Physics Experimentation, 2009, 29(12): 38～41

[5] [5] R. Li, T. Wang, Z. G. Zhu et al.. Vibration characteristics of various surfaces using an LDV for long-range voice acquisition［J］. IEEE Sensors Journal, 2011, 11(6): 1415～1422