Lasing features of dye-doped pendant drops added with polymer particles: spectral blueshift and intensity enhancement
Pu Xiao-Yun (普小云)ab, Zhang Shu (张曙)a, Chan Chiu-Wah (陈超华)b, Lee Wing-Kee (李荣基)b
a Department of Physics, Yunnan University, Kunming 650091, China; b Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong, China
Abstract When micrometre-sized polymer particles were added into a dye-doped pendant drop that acted as a quasi-two-dimensional circular resonator, we found a blueshift of the peak wavelength of its lasing spectrum. The lasing output was also enhanced by the particles. The spectral blueshift was explained by a model of dye lasing in a circular cavity. The model includes losses of the scattering particles, medium absorption, and radiation leakage. An optimum particle density for maximum lasing output was deduced. The results are consistent with our experimental findings.
Received: 05 April 2002
Revised: 01 June 2002
Accepted manuscript online:
Fund: Project supported by the National Natural Science Foundation of China (Grant No 10174060).
Cite this article:
Pu Xiao-Yun (普小云), Zhang Shu (张曙), Chan Chiu-Wah (陈超华), Lee Wing-Kee (李荣基) Lasing features of dye-doped pendant drops added with polymer particles: spectral blueshift and intensity enhancement 2002 Chinese Physics 11 1179
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