Photoionization and third-order susceptibility of a neutral donor in ZnS/InP/ZnSe core/shell spherical quantum dots

2014 ◽  
Vol 449 ◽  
pp. 57-60 ◽  
Author(s):  
Wenfang Xie
Keyword(s):  
Quantum Dots ◽  
Core Shell ◽  
Third Order ◽  
Neutral Donor ◽  
Order Susceptibility

Optical limiting behavior of ring substituted zinc, indium and gallium phthalocyanines in the presence of quantum dots

2011 ◽  
Vol 15 (11n12) ◽  
pp. 1239-1249 ◽  
Author(s):  
Jonathan Britton ◽  
Christian Litwinski ◽  
Mahmut Durmuş ◽  
Vongani Chauke ◽  
Tebello Nyokong
Keyword(s):  
Thin Films ◽  
Quantum Dots ◽  
Optical Limiting ◽  
Amino Groups ◽  
Third Order ◽  
Limiting Behavior ◽  
General Improvement ◽  
Limiting Parameters ◽  
Future Work ◽  
Order Susceptibility

This paper presents the study of the effects of CdTe-TGA quantum dots (QDs) on optical limiting ability of different phthalocyanine (Pc) complexes (1–10) containing Zn , Ga , In central metals and substituted with benzyloxyphenoxy, phenoxy, tert-butylphenoxy and amino groups. The optical limiting parameters of Pcs were higher for tert-butylphenoxy when compared to benzyloxyphenoxy and phenoxy substituents, in DMSO. Non-peripheral substitution decreased the optical limiting parameters. Third-order susceptibility (Im[χ(3)]/α) values of Pcs in the absence and presence of CdTe QDs were in the 10-12 to 10-10 esu.cm range. Hyperpolarizabilities (γ) ranged from 10-31 to 10-29 esu L for Pc alone or in mixture with QDs. There is a general improvement in optical limiting ability of Pc complexes in the presence of CdTe TGA QDs. Due to these promising results, future work can be implemented for the creation of Pc:QD thin films, which would then be examined to ensure that their optical limiting ability is still acceptable.

Preparation and Third-Order Optical Nonlinearity of Self-Assembled Chitosan/CdSe−ZnS Core−Shell Quantum Dots Multilayer Films

2006 ◽  
Vol 110 (4) ◽  
pp. 1566-1570 ◽  
Author(s):  
Xiaohui Wang ◽  
Yumin Du ◽  
Sha Ding ◽  
Ququan Wang ◽  
Guiguang Xiong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Nonlinearity ◽  
Multilayer Films ◽  
Core Shell ◽  
Third Order ◽  
Self Assembled

scholarly journals Linear and Nonlinear Optical Absorption of CdSe/CdS Core/Shell Quantum Dots in the Presence of Donor Impurity

Atoms ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 75
Author(s):  
Grigor A. Mantashian ◽  
Nare A. Zaqaryan ◽  
Paytsar A. Mantashyan ◽  
Hayk A. Sarkisyan ◽  
Sotirios Baskoutas ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Nonlinear Optical ◽  
Incident Light ◽  
Refractive Index Change ◽  
Core Shell ◽  
The Finite Element Method ◽  
Third Order ◽  
Mass Approximation ◽  
Nonlinear Optical Absorption ◽  
Linear And Nonlinear

Linear and nonlinear optical properties in colloidal CdSe/CdS core/shell quantum dots with different sizes have been theoretically investigated in the framework of effective mass approximation. The electron states in colloidal CdSe/CdS core/shell quantum dots have been calculated using the finite element method. The intraband linear and nonlinear absorption spectra have been calculated for colloidal CdSe/CdS core/shell quantum dots with different sizes. In addition, the dependences of the linear and nonlinear refractive index change on the incident light energy have been calculated. In the last section of the paper the second- and third-order harmonic generation spectra have been presented.

Third-order non-linear spectroscopy of CdSe and CdSe/ZnS core shell quantum dots

2005 ◽  
Vol 246 (1-3) ◽  
pp. 205-212 ◽  
Author(s):  
Irina Gerdova ◽  
Alain Haché
Keyword(s):  
Quantum Dots ◽  
Core Shell ◽  
Third Order ◽  
Non Linear
Sign in / Sign up

Export Citation Format

Share Document