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

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.

Study of optical nonlinearity of CdSe and CdSe@ZnO core–shell quantum dots in nanosecond regime

2015 ◽  
Vol 29 (33) ◽  
pp. 1550209 ◽  
Author(s):  
Deepika ◽  
Rakesh Dhar ◽  
Devendra Mohan
Keyword(s):  
Quantum Dots ◽  
Thioglycolic Acid ◽  
Second Harmonic ◽  
Optical Nonlinearity ◽  
Index Formula ◽  
Core Shell ◽  
Optical Parameters ◽  
Strong Nonlinearity ◽  
Third Order ◽  
Optical Limiter

Thioglycolic acid capped cadmium selenide (CdSe) and CdSe@ZnO core–shell quantum dots have been synthesized in aqueous phase. The sample was characterized by UV-vis spectrophotometer, TEM and Z-scan technique. The nonlinear optical parameters viz. nonlinear absorption coefficient [Formula: see text], nonlinear refractive index [Formula: see text] and third-order nonlinear susceptibilities [Formula: see text] of quantum dots have been estimated using second harmonic of Nd:YAG laser. The study predicts that CdSe@ZnO quantum dots exhibits strong nonlinearity as compared to core CdSe quantum dots. The nonlinearity in quantum dots is attributed to the presence of resonant excitation and free optical processes. The presence of RSA in these nanoparticles makes them a potential material for the development of optical limiter.

Sign in / Sign up

Export Citation Format

Share Document