| Presentation | 1999/1/19 Optical Microphone System : Displacements measurement by means of the self-injection phenomenon of a laser Noriaki Ishizawa, Kouichi Yamazaki, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We propose an optical microphone system using characteristics of spatial coherence of a laser. This system measures diaphragm displacements of a microphone by means of the self-injection phenomenon of a laser, we use an optical phase demodulator and electric signal processing so that it can measure diaphragm displacements more than wavelength of an optical source. We show properties of the proposed system and derive the ratio of signal-power to noise-power of output electric signal. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Laser / Microphone / Self-injection phenomenon |
| Paper # | PS98-68,OPE98-117,LQE98-110 |
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| Conference Information | |
| Committee | LQE |
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| Conference Date | 1999/1/19(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Lasers and Quantum Electronics (LQE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Optical Microphone System : Displacements measurement by means of the self-injection phenomenon of a laser |
| Sub Title (in English) | |
| Keyword(1) | Laser |
| Keyword(2) | Microphone |
| Keyword(3) | Self-injection phenomenon |
| 1st Author's Name | Noriaki Ishizawa |
| 1st Author's Affiliation | Dept.of Inform & Communication Eng., Tamagawa Univ.() |
| 2nd Author's Name | Kouichi Yamazaki |
| 2nd Author's Affiliation | Dept.of Inform & Communication Eng., Tamagawa Univ. |
| Date | 1999/1/19 |
| Paper # | PS98-68,OPE98-117,LQE98-110 |
| Volume (vol) | vol.98 |
| Number (no) | 509 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |