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Mikel, Břetislav - Číp, Ondřej - Lazar, Josef
Original Title
Absolute Distance Measurements with Tunable Semiconductor Laser
Type
journal article - other
Language
English
Original Abstract
The work is oriented to development of the absolute distance interferometer with a narrow-linewidth tunable VCSEL laser (Vertical-Cavity Surface-Emitting Laser) at 760 nm and a wavelength-scanning interferometry technique improved by an amplitude division of interference fringe. This laser performs the mod-hop free tuning range up to 1.4 nm and a value of the injection current controls the wavelength. With respect to a high-sensitivity of the emitted wavelength to the injection current fluctuation, we provided the stabilization of laser frequency by means of an electronic frequency lock to modes of the Fabry-Perot glass etalon. Instantaneous values of the interference phase before and after the scanning process are recorded for a longer interval due to data averaging. For the first laboratory experiments, we have measured preliminary results with relative uncertainty of absolute distance measurement at 8.10-5 level.
Keywords
Tunable laser, absolute interferometer
Authors
RIV year
2005
Released
1. 1. 2005
ISBN
0031-8949
Periodical
Physica Scripta
Year of study
Number
118
State
Kingdom of Sweden
Pages from
41
Pages to
44
Pages count
4
BibTex
@article{BUT45888, author="Břetislav {Mikel} and Ondřej {Číp} and Josef {Lazar}", title="Absolute Distance Measurements with Tunable Semiconductor Laser", journal="Physica Scripta", year="2005", volume="2005", number="118", pages="4", issn="0031-8949" }