Open AccessEnhancement of random lasing based on the composite consisting of nanospheres embedded in nanorods template
Author(s) -
Yeng-Long Chen,
ChiaLi Chen,
HungI Lin,
C. W. Chen,
Y. F. Chen,
YuChueh Hung,
ChungYuan Mou
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.012706
Subject(s) - nanorod , lasing threshold , materials science , composite number , refractive index , optoelectronics , nanotechnology , optics , scattering , amplified spontaneous emission , random laser , light scattering , laser , composite material , physics , wavelength
A simple and general approach has been developed for the enhancement of random lasing based on the composite consisting of nanospheres and nanorods array. Due to the inherent nature of high refractive index, the selected nanorods act efficiently as scattering feedback centers, which can promote the formation of closed loop paths of the emission arising from nanospheres. To illustrate our working principle, the composite consisting of Tb(OH)(3)/SiO(2) nanospheres and ZnO nanorods was chosen as an example. Quite interestingly, it is found that the random lasing behavior can be easily achieved for the composite system, while it is absent in pure Tb(OH)(3)/SiO(2) nanospheres. The strategy demonstrated here should be very useful for the future development of coherent light emission sources and many other optoelectronic devices.