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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 9 — Apr. 28, 2008
  • pp: 6081–6097

Multi-Field Frequency Modulation Spectroscopy

Ido Ben-Aroya, Matan Kahanov, and Gadi Eisenstein  »View Author Affiliations


Optics Express, Vol. 16, Issue 9, pp. 6081-6097 (2008)
http://dx.doi.org/10.1364/OE.16.006081


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Abstract

We Study a modification of classical FM spectroscopy in the cases where several electromagnetic fields are FM modulated, each in a different manner. This complex spectrum scans a multi-photon resonant atomic medium with the output detected by a phase-sensitive scheme. The demodulated output signal reveals the spectroscopic features of the probed medium. The case in which two different carriers are FM modulated at the same frequency and index but with an opposite phase with respect to each other is analyzed theoretically. This configuration is essential for probing Coherent Population Trapping (CPT) resonances induced by a directly modulated diode laser. Employing a macroscopic model to describe the physical properties of CPT leads to a superb fit between predicted and measured CPT characteristics.

© 2008 Optical Society of America

OCIS Codes
(000.2170) General : Equipment and techniques
(020.1670) Atomic and molecular physics : Coherent optical effects
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(300.6320) Spectroscopy : Spectroscopy, high-resolution
(300.6380) Spectroscopy : Spectroscopy, modulation
(140.3518) Lasers and laser optics : Lasers, frequency modulated

ToC Category:
Spectroscopy

History
Original Manuscript: January 30, 2008
Revised Manuscript: March 27, 2008
Manuscript Accepted: April 9, 2008
Published: April 15, 2008

Citation
Ido Ben-Aroya, Matan Kahanov, and Gadi Eisenstein, "Multi-field frequency modulation spectroscopy," Opt. Express 16, 6081-6097 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-9-6081


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