Influence of spatial localization on the threshold of quasi-state cavities in random lasers | Zendy

Jinsong Liu | Zendy; Wang Hong | Zendy

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Influence of spatial localization on the threshold of quasi-state cavities in random lasers

Author(s) -

Jinsong Liu,

Wang Hong

Publication year - 2004

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.53.4224

Subject(s) - laser , random laser , state (computer science) , statistical physics , materials science , optics , computer science , physics , lasing threshold , algorithm

Laser phenomena in random media have been studied bas ed on the localized theory for optical waves in finite random media. The relatio n ship between spatial localization and amplification for quasi_state modes ha s been investigated by use of the finite difference time domain method. T he spatial profile and the spectra characteristics of quasi_state modes are dete r mined by analyzing the localized processes of optical light beams in random medi a without gain. The amplification and threshold of quasi_state modes are analyze d in random media with gain. Results show that the quasi_state mode with a stron ger spatial localization has lower threshold and can be amplified preferentially .

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