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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 18, Iss. 11 — Nov. 1, 2001
  • pp: 1676–1683

Optical-pumping noise in laser-pumped, all-optical microwave frequency references

J. Kitching, H. G. Robinson, L. Hollberg, S. Knappe, and R. Wynands  »View Author Affiliations


JOSA B, Vol. 18, Issue 11, pp. 1676-1683 (2001)
http://dx.doi.org/10.1364/JOSAB.18.001676


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Abstract

We demonstrate that optical pumping plays a significant role in determining the noise in certain types of laser-pumped vapor-cell microwave frequency standards by changing the way in which the laser’s FM noise is converted to AM noise by the optical-absorption profile. When this FM–AM conversion is the dominant noise source, the noise spectrum of the transmitted intensity can be dramatically altered by the optical-pumping process. FM noise at Fourier frequencies larger than the optical-pumping time is converted to AM noise differently from noise at lower Fourier frequencies. This effect can modify the optimum design of vapor-cell frequency references and adds an additional FM–AM-related noise source that cannot be eliminated with laser tuning.

© 2001 Optical Society of America

OCIS Codes
(020.1670) Atomic and molecular physics : Coherent optical effects
(020.3690) Atomic and molecular physics : Line shapes and shifts
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(270.1670) Quantum optics : Coherent optical effects
(300.6320) Spectroscopy : Spectroscopy, high-resolution
(300.6420) Spectroscopy : Spectroscopy, nonlinear

Citation
J. Kitching, H. G. Robinson, L. Hollberg, S. Knappe, and R. Wynands, "Optical-pumping noise in laser-pumped, all-optical microwave frequency references," J. Opt. Soc. Am. B 18, 1676-1683 (2001)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-18-11-1676

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