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 d
uring the pumping of a pulsed YAG or cw argon laser. These gain materials w
ere sliced and coupled with I-D or 2-D randomly rough gold films with large
slopes. An experimental investigation was carried out with a He-Ne laser a
s the scattering source and the optical gain provided by a ew argon laser.
The enhanced backscattering and the satellite peaks located about the enhan
ced-backscattering peak were obviously amplified, with their widths narrowe
d. These experimental results agree well with previous theoretical predicti
ons. (C) 2001 Optical Society of America.