Intrinsic intensity fluctuations in random lasers

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Karen L. van der Molen,¹ Allard P. Mosk,¹ and Ad Lagendijk²
¹Complex Photonic Systems, MESA+ Research, Institute and Department of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
²FOM Institute for Atomic and Molecular Physics (AMOLF), Kruislaan 407, 1098 SJ Amsterdam, The Netherlands

Received 16 May 2006; published 15 November 2006

Wepresent a quantitative experimental and theoretical study of intensity fluctuationsin the emitted light of a random laser that hasdifferent realizations of disorder for every pump pulse. A modelthat clarifies these intrinsic fluctuations is developed. We describe theoutput versus input power graphs of the random laser withan effective spontaneous emission factor ( beta factor).

URL:	http://link.aps.org/doi/10.1103/PhysRevA.74.053808
DOI:	10.1103/PhysRevA.74.053808
PACS:	42.55.Zz; 42.25.Dd 42.55.Zz Random lasers 42.25.Dd Wave propagation in random media (wave optics) YEAR: 2006
KEYWORDS:	fluctuations, optical pumping, spontaneous emission, laser beams

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