Title :
A displacement sensor for spectrum analysis using the optical feedback in a single-mode laser diode
Author :
Bosch, Thierry ; Servagent, Noël ; Lescure, Marc
Author_Institution :
Dept. d´´Autom. et Productique, Ecole des Mines, Nantes, France
Abstract :
A non-contact displacement sensor using the self-mixing interference inside a cw single-mode laser diode has been developed to measure displacements up to 10 cm per second and resonance frequencies with a resolution of 0.2 Hz. This sensor has been used for defects detection and to determine the spectrum of a metallic plate
Keywords :
displacement measurement; laser feedback; measurement by laser beam; optical sensors; semiconductor lasers; spectral analysis; 10 cm; cw single-mode laser diode; defects detection; displacement measurement; displacement sensor; metallic plate; modal analysis; optical feedback; resonance frequencies; self-mixing interference; single-mode laser diode; spectrum analysis; Diode lasers; Displacement measurement; Frequency; Interference; Laser feedback; Optical feedback; Optical modulation; Optical sensors; Output feedback; Vibration measurement;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1997. IMTC/97. Proceedings. Sensing, Processing, Networking., IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-3747-6
DOI :
10.1109/IMTC.1997.610228
