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Optics Letters

Optics Letters


  • Vol. 26, Iss. 12 — Jun. 15, 2001
  • pp: 926–928

Diode-laser noise conversion in an optically dense atomic sample

Messaoud Bahoura and André Clairon  »View Author Affiliations

Optics Letters, Vol. 26, Issue 12, pp. 926-928 (2001)

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We report on oscillating complex noise spectra obtained when a diode-laser beam passes through a resonant dense Doppler-broadened cesium-vapor cell. Atomic coherence converts the laser phase noise into amplitude noise in the transmitted beam. We have found that the level of amplitude noise is orders of magnitude above the intrinsic laser noise. As a function of laser detuning, this noise extends over several inhomogeneous widths, depending on the spectral frequency. Numerical calculations based on a simple theory remarkably mimic the details of the experimental noise spectra.

© 2001 Optical Society of America

OCIS Codes
(140.2020) Lasers and laser optics : Diode lasers
(270.2500) Quantum optics : Fluctuations, relaxations, and noise
(300.1030) Spectroscopy : Absorption
(300.3700) Spectroscopy : Linewidth
(300.6170) Spectroscopy : Spectra
(300.6260) Spectroscopy : Spectroscopy, diode lasers

Messaoud Bahoura and André Clairon, "Diode-laser noise conversion in an optically dense atomic sample," Opt. Lett. 26, 926-928 (2001)

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