NDLI: Laser PM to AM conversion in atomic vapors and short term clock stability

Content Provider	IEEE Xplore Digital Library
Author	Camparo, J.C. Buell, W.F.
Copyright Year	1997
Description	Author affiliation: Electron. Technol. Center, Aerosp. Corp., Los Angeles, CA, USA (Camparo, J.C.)
Abstract	The optically thick vapors employed in gas-cell atomic clocks provide for very efficient conversion of laser phase noise (PM) to amplitude noise (AM). Here, we discuss the role of PM to AM conversion in determining gas-cell clock performance. First, a brief overview of the PM to AM conversion process will be given, highlighting the fact that laser phase noise creates fluctuations in the atom's optical absorption cross-section which have an exponential influence on the laser's transmitted intensity. Experimental results will then be presented showing that the PM to AM conversion process can increase the relative intensity noise of transmitted laser light by orders of magnitude, and that this can, under certain conditions, cause laser-pumped clock performance to be poorer than lamp-pumped clock performance.
Starting Page	253
Ending Page	258
File Size	542081
Page Count	6
File Format	PDF
ISBN	078033728X
DOI	10.1109/FREQ.1997.638555
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-05-30
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Atom lasers Atomic beams Laser noise Gas lasers Optical noise Atom optics Phase noise Atomic clocks Noise level Fluctuations
Content Type	Text
Resource Type	Article

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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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