Thermal photon statistics in laser light above threshold

Details Thermal photon statistics in laser light above threshold Thermal photon statistics in laser light above threshold

1999-03-04

arxiv.org/abs/quant-ph/9903017v1

Phys.Rev. A62 (2000) 063807

Physics

Quantum Physics

4 pages RevTex

Scientific paper

10.1103/PhysRevA.62.063807

We show that the reduction in photon number fluctuations at laser threshold often cited as a fundamental laser property does not occur in typical semiconductor lasers such as the ones commonly used in modern technological applications today. Indeed, such lasers may still exhibit thermal intensity fluctuations far above threshold. We therefore conclude that sub-thermal intensity fluctuations cannot be regarded as a necessary property of laser light. Rather, one should distinguish betwen a thermal laser regime and a sub-thermal laser regime.

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