Wide tunable laser with noise suppression for precise cavity length measurement

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F14%3A00433251" target="_blank" >RIV/68081731:_____/14:00433251 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1109/CPEM.2014.6898530" target="_blank" >http://dx.doi.org/10.1109/CPEM.2014.6898530</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/CPEM.2014.6898530" target="_blank" >10.1109/CPEM.2014.6898530</a>

Result language
angličtina
Original language name
Wide tunable laser with noise suppression for precise cavity length measurement
Original language description
We present a method to measure precisely absolute distance between mirrors of Fabry-Perot cavity (FPC) with a spacer from an ultra low expansion material based on ultra wide tunable laser diode. The laser diode works at 1542 nm with 1 MHz linewidth and 2nm tunable range. First results with noise suppression was carried out with 3 kHz linewidth laser has been suppressed by 60 dBc/Hz at 10 kHz by unbalanced heterodyne fiber interferometer while the tunability range stayed untouched. This way we were ableto reach 1010 uncertainty corresponding to 10 fm with wide tunable range of 100s of GHz corresponding to 1000 nm distance changes. The precision is ensured by referencing to stabilized optical frequency comb.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

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

Article name in the collection
CPEM 2014. 29th Conference on Precision Electromagnetic Measuerements. Proceedings
ISBN
978-1-4799-5205-2
ISSN
0589-1485
e-ISSN
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Number of pages
2
Pages from-to
604-605
Publisher name
IEEE
Place of publication
Piscataway
Event location
Rio de Janeiro
Event date
Aug 24, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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