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Mikel, Břetislav - Číp, Ondřej - Lazar, Josef
Original Title
Wavelength Control of VCSEL Laser Employed in the Absolute Laser Interferometer
Type
conference paper
Language
English
Original Abstract
In the work, we present the absolute interferometer with a narrow-linewidth tunable VCSEL laser (Vertical-Cavity Surface-Emitting Laser) working at 760 nm. As a detection technique, we use a fast wavelength-scanning interferometry improved by an amplitude division of the interference fringe with using two signals in quadrature. Used VCSEL laser is wide tunable with the mod-hop free tuning range more than 1.2 nm. We control the stabilization and tuning process of the laser wavelength with using the frequency lock to a Fabry-Perot glass plan-parallel etalon with high-fines. The optical set-up of the interferometer uses polarized beams and Michelson structure of the interferometer. We experimentally compared the developed absolute interferometer with a conventional – incremental Michelson interferometer based on a single frequency He-Ne laser that has the resolution 1.2 nm. We achieved the relative uncertainty below 10-4 order for a range of tested distances L < 78; 118 > mm.
Keywords
wavelength-scanning interferometry, absolute interferometry, tunable laser, scale linearity
Authors
Released
1. 1. 2005
Pages from
40
Pages to
45
Pages count
6
BibTex
@inproceedings{BUT20663, author="Břetislav {Mikel} and Ondřej {Číp} and Josef {Lazar}", title="Wavelength Control of VCSEL Laser Employed in the Absolute Laser Interferometer", booktitle="XXVIIIth general assembly of International Radio Science", year="2005", pages="6" }