Direct Detection of Sound Wave by Light Development of Optical Wave Microphone with No Diaphragm

被引：0
|
作者：
Sonoda, Yoshito [1 ]
Nakamiya, Toshiyuki [1 ]
机构：
[1] Tokai Univ, Grad Sch Sci & Technol, Kumamoto, Japan
来源：
2014 IEEE 3RD GLOBAL CONFERENCE ON CONSUMER ELECTRONICS (GCCE) | 2014年
关键词：
Audiosound; Ultrasound; Optical microphone; Laser;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Optical wave microphone is a novel method to measure audio and ultrasonic sounds by a laser beam with no diaphragm. In this method, ultra-weak diffraction light generated by sound is optically Fourier transformed and converted into an electrical signal. In this study, in order to improve the S/N ratio for practical use, the external resonator structure of He-Ne laser is used as a sound sensor and the sound signal amplification property is theoretically and experimentally examined. We succeeded in sound signal amplification by this method.
引用
收藏
页码：76 / 80
页数：5
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