scholarly journals Asymmetric quantum well structures for enhanced infrared photon absorption

2013 ◽  
Author(s):  
Mehjabeen A. Khan
Keyword(s):  
Quantum Well ◽  
Photon Absorption ◽  
Quantum Well Structures ◽  
Asymmetric Quantum ◽  
Infrared Photon

Asymmetric quantum-well structures for AlGaN/GaN/AlGaN resonant tunneling diodes

2016 ◽  
Vol 119 (16) ◽  
pp. 164501 ◽  
Author(s):  
Lin'an Yang ◽  
Yue Li ◽  
Ying Wang ◽  
Shengrui Xu ◽  
Yue Hao
Keyword(s):  
Quantum Well ◽  
Resonant Tunneling ◽  
Resonant Tunneling Diodes ◽  
Quantum Well Structures ◽  
Tunneling Diodes ◽  
Asymmetric Quantum

Coherent carrier propagation in the continuum of asymmetric quantum-well structures

1999 ◽  
Vol 60 (20) ◽  
pp. R13993-R13996 ◽  
Author(s):  
C. Schönbein ◽  
H. Schneider ◽  
M. Walther
Keyword(s):  
Quantum Well ◽  
Quantum Well Structures ◽  
Asymmetric Quantum ◽  
The Continuum

scholarly journals Evidence of correlated electron hole pairs in dots in asymmetric quantum well structures

2010 ◽  
Vol 245 ◽  
pp. 012050 ◽  
Author(s):  
M H Abdellatif ◽  
Jin Dong Song ◽  
Won Jun Choi ◽  
Nam Ki Cho ◽  
Jung Il Lee
Keyword(s):  
Quantum Well ◽  
Electron Hole ◽  
Quantum Well Structures ◽  
Correlated Electron ◽  
Asymmetric Quantum

TWO-PHOTON-ABSORPTION SPECTRA OF QUANTUM-WELL EXCITONS IN STATIC ELECTRIC FIELDS

1991 ◽  
Vol 05 (17) ◽  
pp. 1133-1138
Author(s):  
KAZUHITO FUJII ◽  
AKIRA SHIMIZU ◽  
JOHAN BERGQUIST ◽  
SOTOMITSU IKEDA ◽  
TAKESHI SAWADA
Keyword(s):  
Electric Field ◽  
Quantum Well ◽  
Absorption Spectra ◽  
Electric Fields ◽  
Band Gap Energy ◽  
Photon Absorption ◽  
Static Electric Field ◽  
Quantum Well Structures ◽  
Two Photon Absorption ◽  
Two Photon

We have measured two-photon-absorption spectra of GaAs/Al 0.4 Ga 0.6 As quantum-well structures in a static electric field for photon energies near half the band gap energy, and found drastic field-induced-changes in the spectra. The two-photon-absorption peak at half the energy of the lowest light-hole exciton is induced by the static electric field normal to the quantum well layers, in agreement with a theory that takes account of quasi-two-dimensional exciton effects. With increasing the electric field, however, this peak grows more drastically than the theoretical prediction, and it approaches a large value predicted by another simplified theory based on a two-level model.

Intrasubband 1.55 μm Electrooptical Modulation in SiGe Asymmetric Quantum Well Structures

1993 ◽  
Vol 298 ◽  
Author(s):  
Lionel R. Friedman ◽  
Richard A. Soref
Keyword(s):  
Quantum Well ◽  
Electric Fields ◽  
Field Effect ◽  
Narrow Linewidth ◽  
Microwave Response ◽  
Optical Extinction ◽  
Quantum Well Structures ◽  
Electrooptic Modulator ◽  
Asymmetric Quantum ◽  
Optoelectronic Integration

AbstractA new, fast, intrasubband 1.55 μm electrooptic modulator in the SiGe/Si/CaF2-on-Si steppedquantum- well system is proposed and analyzed. At electric fields of ±8 V/μm, resonant 1-3 conduction intrasubband absorption is predicted to give 18 dB of optical extinction for narrow-linewidth transitions. We expect this field effect modulator to have microwave response, plus compatibility with Si-based optoelectronic integration.

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