High-quality alloyed CdSxSe1-x whiskers as waveguides with tunable stimulated emission.
High-quality ultra-long alloyed CdS(x)Se(1)(-)(x) (0 < or = x < or = 1) whiskers were obtained by a simple thermal evaporation route. The near band-edge emission in these whiskers can be effectively guided at the sub-millimeter scale under continuous-wave laser excitation. As good optical waveguide cavities, the whiskers exhibit stimulated emissions under pulsed light excitation at room temperature for all compositions 0 < or = x < or = 1. The spectral positions of the sharp emission lines of the whiskers were tuned by their compositions, covering the spectral range from green to red.
Pan
Anlian
A
Micro-Nano Technologies Research Center, Hunan University, Changsha, 410082 P.R. China. zoubs@aphy.iphy.ac.cn
Liu
Ruibin
R
Wang
Feifei
F
Xie
Sishen
S
Zou
Bingsuo
B
Zacharias
Margit
M
Wang
Zhong Lin
ZL