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Title: Nonlinear optical response of semiconductor-nanocrystals-embedded photonic band gap structure

Abstract

Colloidal CdSe/ZnS core/shell nanocrystals (NCs), which were dispersed in SiO{sub 2} sol, were utilized to fabricate a SiO{sub 2}:NCs/TiO{sub 2} all-dielectric photonic band gap (PBG) structure. The third-order nonlinear refractive index (n{sub 2}) of the PBG structure was nearly triple of that of the SiO{sub 2}:NCs film due to the local field enhancement in the PBG structure. The photoinduced change in refractive index (Δn) could shift the PBG band edge, so the PBG structure would show significant transmission modification, whose transmission change was ∼17 folds of that of the SiO{sub 2}:NCs film. Under excitation of a 30 GW/cm{sup 2} femtosecond laser beam, a transmission decrease of 80% was realized.

Authors:
; ; ; ; ; ;  [1]
  1. Advanced Photonic Center, Southeast University, Nanjing 210096 (China)
Publication Date:
OSTI Identifier:
22267743
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 104; Journal Issue: 17; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CADMIUM SELENIDES; LASERS; NANOSTRUCTURES; REFRACTIVE INDEX; SEMICONDUCTOR MATERIALS; SILICON OXIDES; TITANIUM OXIDES; ZINC SULFIDES

Citation Formats

Liao, Chen, Zhang, Huichao, Tang, Luping, Zhou, Zhiqiang, Lv, Changgui, Cui, Yiping, and Zhang, Jiayu. Nonlinear optical response of semiconductor-nanocrystals-embedded photonic band gap structure. United States: N. p., 2014. Web. doi:10.1063/1.4874613.
Liao, Chen, Zhang, Huichao, Tang, Luping, Zhou, Zhiqiang, Lv, Changgui, Cui, Yiping, & Zhang, Jiayu. Nonlinear optical response of semiconductor-nanocrystals-embedded photonic band gap structure. United States. https://doi.org/10.1063/1.4874613
Liao, Chen, Zhang, Huichao, Tang, Luping, Zhou, Zhiqiang, Lv, Changgui, Cui, Yiping, and Zhang, Jiayu. 2014. "Nonlinear optical response of semiconductor-nanocrystals-embedded photonic band gap structure". United States. https://doi.org/10.1063/1.4874613.
@article{osti_22267743,
title = {Nonlinear optical response of semiconductor-nanocrystals-embedded photonic band gap structure},
author = {Liao, Chen and Zhang, Huichao and Tang, Luping and Zhou, Zhiqiang and Lv, Changgui and Cui, Yiping and Zhang, Jiayu},
abstractNote = {Colloidal CdSe/ZnS core/shell nanocrystals (NCs), which were dispersed in SiO{sub 2} sol, were utilized to fabricate a SiO{sub 2}:NCs/TiO{sub 2} all-dielectric photonic band gap (PBG) structure. The third-order nonlinear refractive index (n{sub 2}) of the PBG structure was nearly triple of that of the SiO{sub 2}:NCs film due to the local field enhancement in the PBG structure. The photoinduced change in refractive index (Δn) could shift the PBG band edge, so the PBG structure would show significant transmission modification, whose transmission change was ∼17 folds of that of the SiO{sub 2}:NCs film. Under excitation of a 30 GW/cm{sup 2} femtosecond laser beam, a transmission decrease of 80% was realized.},
doi = {10.1063/1.4874613},
url = {https://www.osti.gov/biblio/22267743}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 17,
volume = 104,
place = {United States},
year = {Mon Apr 28 00:00:00 EDT 2014},
month = {Mon Apr 28 00:00:00 EDT 2014}
}