Nonlinear optical properties of cobalt and iron doped CdSe nanoparticles using Z-scan technique

2015 ◽  
Vol 457 ◽  
pp. 332-338 ◽  
Author(s):  
Poonam Gaur ◽  
B.P. Malik ◽  
Arun Gaur
1996 ◽  
Vol 35 (Part 1, No. 9A) ◽  
pp. 4633-4638 ◽  
Author(s):  
Hiroshi Yao ◽  
Shigeru Takahara ◽  
Hirokazu Mizuma ◽  
Takashi Kozeki ◽  
Toyoharu Hayashi

Nanomaterials ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 957 ◽  
Author(s):  
Pengchao Li ◽  
Baohua Zhu ◽  
Peng Li ◽  
Zhihao Zhang ◽  
Luyao Li ◽  
...  

CdSe-reduced graphene oxide (CdSe/RGO) composites were synthesized by a hydrothermal method. CdSe/RGO composites with different mass ratios were prepared. The structure and morphology of CdSe/RGO composites were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The synthesis of CdSe/RGO complexes was successfully demonstrated by Fourier infrared (FT-IR) and Raman spectra. CdSe nanoparticles in the CdSe/RGO composite were uniformly dispersed on the graphene surface. The study found that oxygen-containing functional groups such as hydroxyl (-OH) and carboxyl (-COOH) groups in graphene played a decisive role in the dispersion of CdSe. The third-order nonlinear optical properties of CdSe/RGO composites were measured by a single beam Z-scan technique. The experimental results showed that composites exhibited two-photon absorption and self-focusing nonlinear refraction properties. Additionally, the third-order nonlinear susceptibility of the composite material was obviously enhanced, which was mainly due to the good dispersion of CdSe nanoparticles on graphene.


2002 ◽  
Author(s):  
Dean R. Evans ◽  
Timothy P. Pottenger ◽  
Mohammad A. Saleh ◽  
S. A. Basun ◽  
G. R. Landis ◽  
...  

2014 ◽  
Vol 6 (2) ◽  
pp. 1178-1190
Author(s):  
A. JOHN PETER ◽  
Ada Vinolin

Simultaneous effects of magnetic field, pressure and temperature on the exciton binding energies are found in a 9.0 1.0 6.0 4.0 GaAs P / GaAs P quantum dot. Numerical calculations are carried out taking into consideration of spatial confinement effect. The cylindrical system is taken in the present problem with the strain effects. The electronic properties and the optical properties are found with the combined effects of magnetic field strength, hydrostatic pressure and temperature values. The exciton binding energies and the nonlinear optical properties are carried out taking into consideration of geometrical confinement and the external perturbations.Compact density approach is employed to obtain the nonlinear optical properties. The optical rectification coefficient is obtained with the photon energy in the presence of pressure, temperature and external magnetic field strength. Pressure and temperature dependence on nonlinear optical susceptibilities of generation of second and third order harmonics as a function of incident photon energy are brought out in the influence of magnetic field strength. The result shows that the electronic and nonlinear optical properties are significantly modified by the applications of external perturbations in a 9.0 1.0 6.0 4.0 GaAs P / GaAs P quantum dot.


1990 ◽  
Author(s):  
Tapio T. Rantala ◽  
Mark I. Stockman ◽  
Daniel A. Jelski ◽  
Thomas F. George

Sign in / Sign up

Export Citation Format

Share Document