Title :
Laser wavelength measurement with fibre lambda meter
Author :
Garcìa-Márquez, J. ; Surrel, Y. ; Millerioux, Y.
Author_Institution :
Centro de Investigaciones en Opt., Leon, Mexico
Abstract :
A new method for evaluating the ratio between a reference and an unknown wavelength is reported. A Young´s interferometer with no moving parts is used. Light emerging successively from a known wavelength and an unknown wavelength is launched into an optical fibre; a resulting interference pattern is projected onto the sensor of a CCD camera. Data from more than 300 000 sensors are processed by spatial phase-stepping techniques. Finally the whole set of points is fitted to obtain the measured estimation.
Keywords :
CCD image sensors; laser variables measurement; light interferometers; CCD camera; Young´s interferometer; fibre lambda meter; interference pattern; laser wavelength measurement; measured estimation; optical fibre; spatial phase-stepping techniques;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20030983
