Two- and Three-Photon Absorption Induced Emission, Optical Limiting and Stabilization of CdTe/CdS/ZnS Quantum Tripods System

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 emis...

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Veröffentlicht in:	IEEE journal of quantum electronics 2010-06, Vol.46 (6), p.931-936
Hauptverfasser:	He, G.S., Ken-Tye Yong, Jing Zhu, Hai-Yan Qin, Prasad, P.N.
Format:	Artikel
Sprache:	eng
Schlagworte:	Absorption Biomedical optical imaging Cadmium tellurides Compact disks Constraining Excitation Laser excitation Laser stability Law multi-photon absorption Nanoparticles Nonlinear optics Optical limiting Optical materials Optical sensors optical stabilization quantum tripods Stabilization Stimulated emission Tripods Wavelengths Zinc compounds
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Zusammenfassung:	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.
ISSN:	0018-9197 1558-1713
DOI:	10.1109/JQE.2010.2041325