
Proceedings Paper
Self-mixing grating interferometer: theoretical analysis and experimental observationsFormat | Member Price | Non-Member Price |
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Paper Abstract
By combining self-mixing interferometer (SMI) and grating interferometer (GI), a self-mixing grating interferometer (SMGI)
is proposed in this paper. Self-mixing interference occurs when light emitted from a laser diode is diffracted by the doublediffraction
system and re-enters the laser active cavity, thus generating a modulation of both the amplitude and the frequency
of the lasing field. Theoretical analysis and experimental observations show that the SMGI has the same phase sensitivity as
that of the conventional GI and the direction of the phase movement can be obtained from inclination of the interference
signal. Compared with the traditional SMI, the phase change of interference signal in SMGI is independent of laser
wavelength, providing better immunity against environmental disturbances such as temperature, pressure, and humidity
variation. Compared with the traditional GI, the SMGI provides a potential displacement sensor with directional
discrimination and quite compact configuration.
Paper Details
Date Published: 28 August 2016
PDF: 5 pages
Proc. SPIE 9960, Interferometry XVIII, 996019 (28 August 2016); doi: 10.1117/12.2239519
Published in SPIE Proceedings Vol. 9960:
Interferometry XVIII
Katherine Creath; Jan Burke; Armando Albertazzi Gonçalves Jr., Editor(s)
PDF: 5 pages
Proc. SPIE 9960, Interferometry XVIII, 996019 (28 August 2016); doi: 10.1117/12.2239519
Show Author Affiliations
Published in SPIE Proceedings Vol. 9960:
Interferometry XVIII
Katherine Creath; Jan Burke; Armando Albertazzi Gonçalves Jr., Editor(s)
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