Excess-noise-enhanced parametric down conversion

Lamprecht, Claus, Olsen, Murray K., Collett, Matthew and Ritsch, Helmut (2001) Excess-noise-enhanced parametric down conversion. Physical Review A, 64 3: 1-8. doi:10.1103/PhysRevA.64.033811

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Author Lamprecht, Claus
Olsen, Murray K.
Collett, Matthew
Ritsch, Helmut
Title Excess-noise-enhanced parametric down conversion
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
1094-1622
Publication date 2001-09
Sub-type Article (original research)
DOI 10.1103/PhysRevA.64.033811
Open Access Status File (Publisher version)
Volume 64
Issue 3
Start page 1
End page 8
Total pages 8
Place of publication College Park, MD, United States
Publisher American Physical Society
Language eng
Abstract We calculate the influence of excess noise on parametric down conversion in an unstable optical parametric oscillator (OPO), using a quantum quasimode description. We find a strongly enhanced pair photon generation rate below threshold as compared to a conventional stable cavity setup of comparable gain and loss. In addition, the oscillation threshold is lowered due to the influence of the excess noise and the squeezing properties of the emitted light are significantly changed. In general, the maximal quantum-noise suppression in one quadrature component is reduced, which poses strong limitations for the practical usefulness of a geometrically unstable OPO source. The analytical results from our quasimode description are in good agreement with numerical simulations using a positive-P representation of the field in mode space and in position space.
Keyword Optics
Physics, Atomic, Molecular & Chemical
Spontaneous Emission Factor
Quantum-noise
Lasers
Oscillator
Photons
Cavity
Modes
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Physical Sciences Publications
 
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Created: Wed, 19 Sep 2007, 15:57:04 EST