scholarly journals Extended π-conjugated ruthenium zinc–porphyrin complexes with enhanced nonlinear-optical properties

2015 ◽  
Vol 51 (14) ◽  
pp. 2855-2858 ◽  
Author(s):  
Miriam de Torres ◽  
Sergey Semin ◽  
Ilya Razdolski ◽  
Jialiang Xu ◽  
Johannes A. A. W. Elemans ◽  
...  
Keyword(s):  
Optical Properties ◽  
Optical Absorption ◽  
Nonlinear Optical ◽  
Refractive Indices ◽  
Absorption Coefficients ◽  
Metal Core ◽  
Third Order ◽  
Zinc Porphyrin ◽  
Nonlinear Optical Absorption ◽  
Porphyrin Dimers

Zinc porphyrin dimers and trimers, in which the porphyrins are connected via a ruthenium metal core, exhibit large third-order nonlinear optical absorption coefficients and refractive indices.

Linear and nonlinear optical absorption coefficients and refractive index changes in Morse quantum wells under electric field

2016 ◽  
Vol 30 (30) ◽  
pp. 1650209 ◽  
Author(s):  
S. Sakiroglu
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Optical Absorption ◽  
Electric Field ◽  
Quantum Wells ◽  
Nonlinear Optical ◽  
Absorption Coefficients ◽  
Nonlinear Optical Absorption ◽  
Index Changes ◽  
Linear And Nonlinear

In this paper, we investigate theoretically the effects of electric field on the linear and nonlinear optical properties of Morse quantum wells considering a two-level system. The effective mass approximation and the envelope function approach are used to calculate the energy levels and wave functions. The analytical expressions of the optical properties are obtained by using the compact density-matrix approach. The linear and third-order nonlinear optical absorption coefficients and the refractive index changes are investigated as a function of the incident photon energy for several configurations of the structural parameter and the applied electric field. Numerical results, presented for a typical GaAs/AlGaAs quantum well, reveal that the electric field has a significant effect on the optical characteristics of these structures and intersubband transitions can be modified by tuning the structural range parameter of the potential.

The effect of temperature, hydrostatic pressure and magnetic field on the nonlinear optical properties of AlGaAs/GaAs semi-parabolic quantum well

2019 ◽  
Vol 33 (27) ◽  
pp. 1950325 ◽  
Author(s):  
Jin-Feng You ◽  
Qiang Zhao ◽  
Zhi-Hai Zhang ◽  
Jian-Hui Yuan ◽  
Kang-Xian Guo ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Optical Properties ◽  
Hydrostatic Pressure ◽  
Optical Absorption ◽  
Quantum Well ◽  
Applied Magnetic Field ◽  
Nonlinear Optical ◽  
Effect Of Temperature ◽  
Absorption Coefficients ◽  
Nonlinear Optical Absorption

In this paper, we explore the optical properties of AlGaAs/GaAs semi-parabolic quantum well (QW) under different temperature, hydrostatic pressure and applied magnetic field. We calculate the nonlinear optical absorption coefficients and the refractive index changes (RICs) with the compact density-matrix approach and iterative method. Then, within the framework of the effective mass and parabolic-band approximations, the energy eigenvalues and the corresponding wave functions for semi-parabolic QW have been obtained by the finite difference method. The theoretical findings show that (1) the energy spectrum depends strongly on temperature, hydrostatic pressure and applied magnetic field; (2) the linear and third-order nonlinear optical absorption coefficients and the RICs are quite sensitive to temperature, hydrostatic pressure and applied magnetic field. Our study provides a theoretical basis for the fabrication of QW structure.

NONLINEAR OPTICAL ABSORPTION BY INTERACTION BETWEEN INTERBAND- AND INTRABAND-RESONANT LIGHTS IN n-DOPED QUANTUM WELL STRUCTURE

1992 ◽  
Vol 01 (04) ◽  
pp. 673-681 ◽  
Author(s):  
SUSUMU NODA ◽  
TETSURO OKUDA ◽  
TAKAO YAMASHITA ◽  
AKIO SASAKI
Keyword(s):  
Optical Absorption ◽  
Quantum Well ◽  
Nonlinear Optical ◽  
Wave Structure ◽  
Guided Wave ◽  
Third Order ◽  
Order Interaction ◽  
The Third ◽  
Quantum Well Structure ◽  
Nonlinear Optical Absorption

Nonlinear optical absorption for interband-resonant light by intraband-resonant light in n-doped quantum well structure is experimentally demonstrated. The nonlinearity is caused by the third-order interaction between interband- and intraband-resonant lights through a guided-wave structure. The amount of absorption for interband-resonant light is increased by 60% with the incidence of intraband-resonant light of 100–200 kW/cm2.

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