Efficient excitation of bulk and surface acoustic waves by laser light

Author

Noge, Satoru ; Kurita, Mie ; Uno, Takahiko

Author_Institution

Kanagawa Inst. of Technol., Japan

Volume

1

fYear

2000

fDate

36800

Firstpage

639

Abstract

We previously proposed a piezoelectric sensor configuration with an optical-access method and reported on simulation results. Two problems exist to the fabrication of such a sensor; one is developing a suitable optical-to-electric conversion technique, and the other is developing on optical measurement method for piezoelectric resonance. We examined the use of a Schottky-barrier photo diode (SBPD) for photoelectric conversion to excite piezoelectric vibration in the VHF region. We found that the photoelectric output of SBPD corresponds to the intensity of the modulated light. The excitation power of piezoelectric vibration is between to μW (at 70 MHz) and 32 μW (at 50 MHz). We report on an optical-to-electrical conversion method that uses on SBPD

Keywords

Schottky diodes; photoacoustic effect; photodiodes; piezoelectric oscillations; surface acoustic waves; 10 to 32 muW; 70 to 50 MHz; Schottky barrier photodiode; VHF region; bulk acoustic wave; laser light excitation; optical access; optical measurement; photoelectric conversion; piezoelectric resonance; piezoelectric sensor; piezoelectric vibration; surface acoustic wave; Acoustic measurements; Acoustic sensors; Acoustic waves; Laser excitation; Optical device fabrication; Optical modulation; Optical sensors; Optical surface waves; Surface acoustic waves; Surface emitting lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2000 IEEE

Conference_Location

San Juan

ISSN

1051-0117

Print_ISBN

0-7803-6365-5

Type

conf

DOI

10.1109/ULTSYM.2000.922629

Filename

922629