Title :
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
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;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2000. IMTC 2000. Proceedings of the 17th IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-5890-2
DOI :
10.1109/IMTC.2000.846919
