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Proceedings Paper

Generation of highly directional ultrasonic waves in sea
Author(s): Bing Han; Xinzhi P. Sheng; Yongping Teng; Xiaoqiu Zheng; Ping Miao
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Paper Abstract

A theoretically and experimentally analysis was presented of ultrasonic wave generation in water by intensity modulated elliptical Gaussian laser beams. It was found that generated acoustic radiation is highly directional both in polar and azimuthally directions. Experimental results showed that over the frequency range of 5 to 20 kHz, there was an almost flat response with an average normalized phase sensitivity of -300 dB re 1/μPa and an average pressure sensitivity of -150.0 dB re rad/μPa. These results indicate that the present design offers the possibility of getting highly directional sound beams in a simple configuration.

Paper Details

Date Published: 12 May 2004
PDF: 4 pages
Proc. SPIE 5280, Materials, Active Devices, and Optical Amplifiers, (12 May 2004); doi: 10.1117/12.520405
Show Author Affiliations
Bing Han, Beijing Jiaotong Univ. (China)
Xinzhi P. Sheng, Beijing Jiaotong Univ. (China)
Yongping Teng, Beijing Jiaotong Univ. (China)
Xiaoqiu Zheng, Beijing Jiaotong Univ. (China)
Ping Miao, Beijing Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 5280:
Materials, Active Devices, and Optical Amplifiers
Connie J. Chang-Hasnain; Dexiu Huang; Yoshiaki Nakano; Xiaomin Ren, Editor(s)

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