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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 16, Iss. 2 — Feb. 1, 1999
  • pp: 286–295

Low-intensity-noise operation of Nd:YVO4 microchip lasers by pump-noise suppression

Christoph Becher and Klaus-J. Boller  »View Author Affiliations

JOSA B, Vol. 16, Issue 2, pp. 286-295 (1999)

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We report on near-quantum-limited intensity noise of Nd:YVO4 microchip lasers pumped with pump-noise-suppressed diode lasers. The low-frequency intensity noise of the microchip lasers is found to depend on mode correlation effects in the absorbed radiation from the diode laser pump source. A minimum intensity noise of 0.5 dB above the standard quantum-noise limit at a frequency of 250 kHz is obtained by pumping with a grating-feedback diode laser. An accurate description of the measured intensity-noise spectra by a quantum-mechanical Langevin rate-equation model is achieved by consideration of the nonlinear gain saturation that is due to the finite lifetime of the lower laser level.

© 1999 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3580) Lasers and laser optics : Lasers, solid-state
(270.0270) Quantum optics : Quantum optics
(270.2500) Quantum optics : Fluctuations, relaxations, and noise
(270.6570) Quantum optics : Squeezed states

Christoph Becher and Klaus-J. Boller, "Low-intensity-noise operation of Nd:YVO4 microchip lasers by pump-noise suppression," J. Opt. Soc. Am. B 16, 286-295 (1999)

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