Low-threshold lasing of a Rhodamine dye solution embedded with nanoparticle fractal aggregates.
The spectral and temporal emission properties of a Rhodamine (Rh) dye solution embedded with nanoparticle fractal aggregates are studied. An experiment on the pump-power density dependence of Rh emission spectra shows that the lasing threshold of a Rh6G solution embedded with TiO(2) nanoparticle fractal aggregates is significantly reduced compared with that of a neat dye solution. The mechanism of this reduction in lasing threshold is discussed, together with the lasing properties of narrow bandwidth and short duration.
Wang
H Z
HZ
Zhao
F L
FL
He
Y J
YJ
Zheng
X G
XG
Huang
X G
XG
Wu
M M
MM