Effect of external feedback on lasing in random media

H. Cao; Y. G. Zhao; X. Liu; E. W. Seelig; R. P.H. Chang

doi:10.1063/1.124645

Effect of external feedback on lasing in random media

H. Cao^*, Y. G. Zhao, X. Liu, E. W. Seelig, R. P.H. Chang

^*Corresponding author for this work

Materials Science and Engineering

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

61 Scopus citations

Abstract

We have studied the effect of external feedback on random laser action in ZnO polycrystalline thin films. Reinjection of light into scattering-formed cavities strongly influences modes, intensity, and threshold of random lasers. We have compared the effect of external feedback from the side of the film and that from the film surface. Our study opens the possibility of controlling random laser frequencies by external feedback.

Original language	English (US)
Pages (from-to)	1213-1215
Number of pages	3
Journal	Applied Physics Letters
Volume	75
Issue number	9
DOIs	https://doi.org/10.1063/1.124645
State	Published - Aug 30 1999

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.124645

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title = "Effect of external feedback on lasing in random media",

abstract = "We have studied the effect of external feedback on random laser action in ZnO polycrystalline thin films. Reinjection of light into scattering-formed cavities strongly influences modes, intensity, and threshold of random lasers. We have compared the effect of external feedback from the side of the film and that from the film surface. Our study opens the possibility of controlling random laser frequencies by external feedback.",

author = "H. Cao and Zhao, {Y. G.} and X. Liu and Seelig, {E. W.} and Chang, {R. P.H.}",

year = "1999",

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AU - Zhao, Y. G.

AU - Liu, X.

AU - Seelig, E. W.

AU - Chang, R. P.H.

PY - 1999/8/30

Y1 - 1999/8/30

N2 - We have studied the effect of external feedback on random laser action in ZnO polycrystalline thin films. Reinjection of light into scattering-formed cavities strongly influences modes, intensity, and threshold of random lasers. We have compared the effect of external feedback from the side of the film and that from the film surface. Our study opens the possibility of controlling random laser frequencies by external feedback.

AB - We have studied the effect of external feedback on random laser action in ZnO polycrystalline thin films. Reinjection of light into scattering-formed cavities strongly influences modes, intensity, and threshold of random lasers. We have compared the effect of external feedback from the side of the film and that from the film surface. Our study opens the possibility of controlling random laser frequencies by external feedback.

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Effect of external feedback on lasing in random media

Abstract

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