β factor in a random laser

Gijs Van Soest; Ad Lagendijk

doi:10.1103/PhysRevE.65.047601

β factor in a random laser

Gijs Van Soest
, Ad Lagendijk^*

^*Corresponding author for this work

University of Amsterdam
Van der Waals-Zeeman Instituut (WZI)

Research output: Contribution to journal › Article › Academic › peer-review

47 Citations (Scopus)

Abstract

We develop a definition for the β factor, the fraction of spontaneous emission that seeds the laser process, for a random laser. With the wavelength-dependence of the gain (and potentially scattering) being the only possible criterion in the competition between gain and loss, our concept of β is based on the spectral properties of the spontaneous emission and laser light We find β≈0.1. We discuss the apparent similarities and differences between the β for a cavity and a random laser.

Original language	English
Article number	047601
Journal	Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume	65
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevE.65.047601
Publication status	Published - 18 Mar 2002
Externally published	Yes

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10.1103/PhysRevE.65.047601

Cite this

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title = "β factor in a random laser",

abstract = "We develop a definition for the β factor, the fraction of spontaneous emission that seeds the laser process, for a random laser. With the wavelength-dependence of the gain (and potentially scattering) being the only possible criterion in the competition between gain and loss, our concept of β is based on the spectral properties of the spontaneous emission and laser light We find β≈0.1. We discuss the apparent similarities and differences between the β for a cavity and a random laser.",

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AB - We develop a definition for the β factor, the fraction of spontaneous emission that seeds the laser process, for a random laser. With the wavelength-dependence of the gain (and potentially scattering) being the only possible criterion in the competition between gain and loss, our concept of β is based on the spectral properties of the spontaneous emission and laser light We find β≈0.1. We discuss the apparent similarities and differences between the β for a cavity and a random laser.

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β factor in a random laser

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