Nanopositioning with detection of a standing wave

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00451092" target="_blank" >RIV/68378271:_____/14:00451092 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Nanopositioning with detection of a standing wave
Original language description
A measuring technique is intended for displacement and position sensing over a limited range with detection of standing-wave pattern inside of a passive Fabry-Perot cavity. In this concept we consider locking of the laser optical frequency and the length of the Fabry-Perot cavity in resonance. Fixing the length of the cavity to e.g. a highly stable mechanical reference allows stabilizing wavelength of the laser in air and thus to eliminate especially the faster fluctuations of refractive index of air due to air flow and inhomogeneity. Detection of the interference maxima and minima within the Fabry-Perot cavity along the beam axis has been tested and proven with a low loss transparent photodetector with very low reflectivity. The transparent photodetector is based on a thin polycrystalline silicon layer. Reduction of losses was achieved thanks to a design as an optimized set of interference layers acting as an antireflection coating. The principle is demonstrated on an experimental setup.
Czech name
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Czech description
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Project
<a href="/en/project/LM2011026" target="_blank" >LM2011026: Laboratory of nanstructures and nanomaterials</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
NANOCON 2013. 5th International conference proceedings
ISBN
978-80-87294-47-5
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
792-796
Publisher name
TANGER Ltd
Place of publication
Ostrava
Event location
Brno
Event date
Oct 16, 2013
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000352070900142

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