Title :
Two- and Three-Photon Absorption Induced Emission, Optical Limiting and Stabilization of CdTe/CdS/ZnS Quantum Tripods System
Author :
He, Guang S. ; Yong, Ken-Tye ; Zhu, Jing ; Qin, Hai-Yan ; Prasad, Paras N.
Author_Institution :
Inst. for Lasers, Photonics & Biophotonics, State Univ. of New York at Buffalo, Buffalo, NY, USA
fDate :
6/1/2010 12:00:00 AM
Abstract :
Two- and three-photon absorption and excitation properties of CdTe/CdS/ZnS quantum tripods in chloroform have been investigated by using ~160-fs laser pulses in the spectral range of ~(1150-1650) nm. The two- and three-photon excited up-conversion emission is located around 740-nm position; the emission intensity follows the square law and cubic law on the excitation intensity for the former and the latter, respectively. The nonlinear transmission and output/input characteristics have been measured at a two-photon absorption wavelength of 1175 nm and a three-photon absorption wavelength of 1580 nm separately. Fairly good optical power limiting and stabilization performance of this material have been achieved.
Keywords :
II-VI semiconductors; cadmium compounds; multiphoton processes; nanoparticles; optical limiters; wide band gap semiconductors; zinc compounds; CdTe-CdS-ZnS; chloroform; cubic law; emission intensity; laser pulse; nanoparticles; nonlinear transmission; optical limiting; quantum tripods system; square law; stabilization; three-photon absorption induced emission; two-photon absorption induced emission; wavelength 1175 nm; wavelength 1580 nm; Absorption; Biomedical optical imaging; Laser excitation; Laser stability; Nanoparticles; Nonlinear optics; Optical materials; Optical sensors; Stimulated emission; Zinc compounds; Optical limiting; multi-photon absorption; nanoparticles; optical stabilization; quantum tripods;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2010.2041325
