Title

Dynanmic Nonlinear Effect on Lasing in Random Media

Abstract

We review our recent work on lasing in active random media. Light scattering, which had been regarded detrimental to lasing action for a long time, actually provided coherent feedback for lasing. We also trapped laser light in micrometer-sized random media. The trapping was caused by disorder-induced scattering and interference. This nontraditional way of light confinement has important application to microlasers. The threshold of ranodm laser can be reduced by incorporating some degree of order into an active random medium. Our calculation result shows that by optimizing the degree of order one can dramatically reduce the threshold of random laser to the values comparable to those of photonic bandgap defect lasers.

Meeting Name

Complex Mediums V: Light and Complexity (2004: Aug. 4-5, Denver, CO)

Department(s)

Physics

Keywords and Phrases

Disordered Systems; Lasing; Microlasers; Random Laser; Acoustic Emissions; Amplification; Backscattering; Crystals; Doping (Additives); Feedback; Optimization; Resonance; Light Scattering

International Standard Serial Number (ISSN)

0277786X

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2004 SPIE--The International Society for Optical Engineering, All rights reserved.

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