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Applied Optics

Applied Optics


  • Vol. 40, Iss. 24 — Aug. 20, 2001
  • pp: 4236–4242

Enhanced backscattering from organic laser gain media bounded with rough gold films

Zu-Han Gu and Gang-Ding Peng  »View Author Affiliations

Applied Optics, Vol. 40, Issue 24, pp. 4236-4242 (2001)

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The enhanced backscattering from organic laser gain media that are bounded with one-dimensional (1-D) and two-dimensional (2-D) rough metal films was investigated. We prepared several organic optical gain materials by doping laser-active dyes in matrices of acrylic polymers. These materials produced efficient and broadband fluorescence emission in the visible wavelengths during the pumping of a pulsed YAG or cw argon laser. These gain materials were sliced and coupled with 1-D or 2-D randomly rough gold films with large slopes. An experimental investigation was carried out with a He–Ne laser as the scattering source and the optical gain provided by a cw argon laser. The enhanced backscattering and the satellite peaks located about the enhanced-backscattering peak were obviously amplified, with their widths narrowed. These experimental results agree well with previous theoretical predictions.

© 2001 Optical Society of America

OCIS Codes
(240.0240) Optics at surfaces : Optics at surfaces
(290.0290) Scattering : Scattering
(290.1350) Scattering : Backscattering
(290.5880) Scattering : Scattering, rough surfaces

Original Manuscript: November 14, 2000
Revised Manuscript: February 22, 2001
Published: August 20, 2001

Zu-Han Gu and Gang-Ding Peng, "Enhanced backscattering from organic laser gain media bounded with rough gold films," Appl. Opt. 40, 4236-4242 (2001)

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