Electro-optic interband excitonic absorption of nanoring double quantum wells

2006 ◽  
Vol 100 (8) ◽  
pp. 083112 ◽  
Author(s):  
X. G. Guo ◽  
J. C. Cao
Keyword(s):  
Quantum Wells ◽  
Double Quantum ◽  
Excitonic Absorption ◽  
Electro Optic

scholarly journals Voltage-controlled wavelength conversion by terahertz electro-optic modulation in double quantum wells

2002 ◽  
Vol 81 (9) ◽  
pp. 1564-1566 ◽  
Author(s):  
M. Y. Su ◽  
S. G. Carter ◽  
M. S. Sherwin ◽  
A. Huntington ◽  
L. A. Coldren
Keyword(s):  
Quantum Wells ◽  
Wavelength Conversion ◽  
Double Quantum ◽  
Electro Optic

NONLINEAR ELECTROABSORPTION IN ASYMMETRIC TRIANGULAR QUANTUM WELI SELF-ELECTRO-OPTIC EFFECT DEVICES

1992 ◽  
Vol 01 (03) ◽  
pp. 473-491
Author(s):  
R.A. PUECHNER ◽  
D.S. GERBER ◽  
R. DROOPAD ◽  
G.N. MARACAS
Keyword(s):  
Quantum Wells ◽  
Room Temperature ◽  
Growth Direction ◽  
Seed Structure ◽  
Transition Energies ◽  
Excitonic Absorption ◽  
Photocurrent Spectroscopy ◽  
Electro Optic ◽  
Field Modulation ◽  
Compositional Grading

The electroabsorptive behavior of asymmetric triangular quantum wells (ATQW) in the active region of a p-i-n self-electro-optic effect device (SEED) structure is experimentally investigated. Excition transition energies are measured by photoluminescence and photocurrent spectroscopy at room temperature and at low temperatures. Room-temperature excitonic linewidths of 9.2 meV for a 265-Å ATQW have been obtained. The electric field modulation of excitonic absorption in ATQWs with compositional grading, both increasing and decreasing in the growth direction is presented. When compared with a similar rectangular quantum-well device, it is observed that ATQWs have intrinsically higher responsivity, comparable room temperature linewidths, and higher device on/off ratios.

Residual electric fields of InGaAs/AlAs/AlAsSb (001) coupled double quantum wells structures assessed by photoreflectance anisotropy

2016 ◽  
Vol 30 (01) ◽  
pp. 1550248
Author(s):  
J. V. González-Fernández ◽  
R. Herrera-Jasso ◽  
N. A. Ulloa-Castillo ◽  
J. Ortega-Gallegos ◽  
R. Castro-García ◽  
...  
Keyword(s):  
Theoretical Model ◽  
Molecular Beam Epitaxy ◽  
Quantum Wells ◽  
Shear Strain ◽  
Electric Fields ◽  
Molecular Beam ◽  
Double Quantum ◽  
Fourier Space ◽  
Electro Optic ◽  
Quantum Dimensions

We report on photoreflectance anisotropy (PRA) spectroscopy of InGaAs/AlAs/AlAsSb coupled double quantum wells (CDQWs) with extremely thin coupling AlAs barriers grown by molecular beam epitaxy (MBE), with no intentional doping. By probing the in-plane interfacial optical anisotropies (OAs), it is shown that PRA spectroscopy has the ability to detect and distinguish semiconductor layers with quantum dimensions, as the anisotropic photoreflectance (PR) signal stems entirely from buried quantum wells (QWs). In order to account for the experimental PRA spectra, a theoretical model at k = 0, based on a linear electro-optic effect through a piezoelectric shear strain, has been employed to quantify the internal electric fields across the QWs. The dimensionalities of the PR lineshapes were tested by using reciprocal (Fourier) space analysis. Such a complementary test is used in order to correctly employ the PRA model developed here.

Evidence for condensation of excitons in double quantum wells

1996 ◽  
Vol 166 (7) ◽  
pp. 801-803 ◽  
Author(s):  
L.V. Butov ◽  
A. Zrenner ◽  
M. Hagn ◽  
G. Abstreiter ◽  
G. Boehm ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Double Quantum

Magneto-optical spectroscopy of modulation-doped GaAs/AlGaAs asymmetric coupled double quantum wells

1999 ◽  
Vol 110 (11) ◽  
pp. 633-638
Author(s):  
Joo In Lee ◽  
Annamratu Kasi Viswanath ◽  
Sungkyu Yu ◽  
Eun-Joo Shin ◽  
Kyu-Seok Lee ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Optical Spectroscopy ◽  
Double Quantum

Tunnelling and relaxation in semiconductor double quantum wells

1997 ◽  
Vol 60 (3) ◽  
pp. 345-387 ◽  
Author(s):  
R Ferreira ◽  
G Bastard
Keyword(s):  
Quantum Wells ◽  
Double Quantum

Coherent model for resonant tunneling of electrons in double quantum wells under electric fields

1994 ◽  
Vol 49 (8) ◽  
pp. 5434-5437 ◽  
Author(s):  
Shi-rong Jin ◽  
Zhong-ying Xu ◽  
Jin-sheng Luo
Keyword(s):  
Quantum Wells ◽  
Electric Fields ◽  
Resonant Tunneling ◽  
Double Quantum
Sign in / Sign up

Export Citation Format

Share Document