NDLI: Precise monitoring of ultra low expansion Fabry-Perot cavity length by the use of a stabilized optical frequency comb

Content Provider	IEEE Xplore Digital Library
Author	Šmid, R. Číp, O. Buchta, Z. Ježek, J. Mikel, B. Čížek, M. Lazar, J.
Copyright Year	2010
Description	Author affiliation: Institute of Scientific Instruments of the ASCR, v.v.i., Královopolská 147, 612 64, Brno, Czech Republic (Šmid, R.; Číp, O.; Buchta, Z.; Ježek, J.; Mikel, B.; Čížek, M.; Lazar, J.)
Abstract	The use of an ultra low expansion cavity plays a crucial role in laser stabilization, and it is essential in atomic or ion clocks. In this work we present a method of mirror distance monitoring in an evacuated Fabry-Perot cavity (FPC) made from an ultra low expansion material (Zerodur expansion class 0). The FPC was placed into a temperature-stabilized stainless steel chamber and the FPC temperature was set to remain close to the point where the expansion coefficient of the cavity material is the lowest. The precise distance of the FPC mirrors in vacuum was indirectly proportional to the optical frequency of a laser. One of the frequency comb component chosen by FBG grating was locked to the FPC of 400 MHz free spectral range. The 100 MHz repetition frequency of the femtosecond laser comb was monitored with counter referenced to a crystal oscillator with short term stability < $10^{−12}$ and long term stability locked to a GPS.
Starting Page	480
Ending Page	484
File Size	922244
Page Count	5
File Format	PDF
ISBN	9781424463992
ISSN	10756787
e-ISBN	9781424464012
DOI	10.1109/FREQ.2010.5556284
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ultrafast optics Temperature measurement Optical variables control Cavity resonators Laser stability Nonlinear optics Laser mode locking
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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