A new Bragg reflection detection instrument for ultrasonic measurement based on optical feedback effects for laser diode

Author

Yarai, Atsush ; Nakanishi, Takuji

Author_Institution

Dept. of Electr. Eng. & Electron., Osaka Sangyo Univ., Japan

Volume

1

fYear

2000

fDate

2000

Firstpage

518

Abstract

A new, Bragg reflection detection instrument for ultrasonic measurements that is based on optical feedback effects for a laser diode is proposed. This instrument allows us to measure the velocity and/or absorption of ultrasonic waves in an ultrahigh frequency (UHF) range, in spite of its extremely simple configuration. The velocity and absorption factor of ultrasonic waves in water are measured in an UHF range. The velocity is in reasonable agreement with reference values

Keywords

acousto-optical modulation; heterodyne detection; laser feedback; measurement by laser beam; ultrasonic absorption; ultrasonic velocity measurement; Bragg reflection detection instrument; UHF range; US absorption; US velocity; acousto-optic modulator; heterodyne detection; laser diode; optical feedback effects; ultrasonic measurement; water; Absorption; Diode lasers; Frequency measurement; Instruments; Optical feedback; Optical reflection; UHF measurements; Ultrasonic variables measurement; Ultraviolet sources; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2000. IMTC 2000. Proceedings of the 17th IEEE

Conference_Location

Baltimore, MD

ISSN

1091-5281

Print_ISBN

0-7803-5890-2

Type

conf

DOI

10.1109/IMTC.2000.846919

Filename

846919