QUANTUM THEORY OF PHOTOLUMINESCENCE FOR COHERENTLY EXCITED SEMICONDUCTOR QUANTUM-WELL SYSTEMS

1999 ◽  
Vol 08 (01) ◽  
pp. 21-40 ◽  
Author(s):  
M. KIRA ◽  
F. JAHNKE ◽  
S. W. KOCH
Keyword(s):  
Quantum Theory ◽  
Quantum Wells ◽  
Emission Intensity ◽  
Femtosecond Pulse ◽  
Light Field ◽  
Pulse Excitation ◽  
Semiconductor Quantum Wells ◽  
Matter Interaction ◽  
Semiconductor Quantum Well ◽  
Light Matter Interaction

Photoluminescence of semiconductor quantum wells is studied using a fully quantized theory for the light-matter interaction. Quantum fluctuations of the light field lead to direct coupling between a coherent excitation and luminescence in other directions. Numerical results for the time evolution of the luminescence spectrum and emission intensity dynamics after a femtosecond pulse excitation are presented.

Quantum theory of phonon-assisted exciton formation and luminescence in semiconductor quantum wells

2000 ◽  
Vol 62 (4) ◽  
pp. 2706-2720 ◽  
Author(s):  
A. Thränhardt ◽  
S. Kuckenburg ◽  
A. Knorr ◽  
T. Meier ◽  
S. W. Koch
Keyword(s):  
Quantum Theory ◽  
Quantum Wells ◽  
Semiconductor Quantum Wells

CARRIER CAPTURE IN SEMICONDUCTOR QUANTUM WELL LASERS: A QUANTUM TRANSPORT ANALYSIS

1998 ◽  
Vol 09 (04) ◽  
pp. 1211-1233 ◽  
Author(s):  
LEONARD F. REGISTER
Keyword(s):  
Wave Function ◽  
Quantum Wells ◽  
Quantum Transport ◽  
Golden Rule ◽  
Carrier Wave ◽  
Carrier Capture ◽  
The Past ◽  
Semiconductor Quantum Wells ◽  
Semiconductor Quantum Well ◽  
Transport Analysis

A quantum transport-based analysis of the essential physics of carrier capture in semiconductor quantum wells is presented. First, the past progression of models of carrier capture by quantum wells is briefly reviewed. Then carrier capture is modeled using the Schrödinger Equation Monte Carlo (SEMC) quantum transport simulator. In addition to reproducing familiar effects, these simulations exhibit significant effects associated with partial phase-coherence of the carrier wave-function across the well which cannot be modeled via classical or perturbative Golden Rule calculations, and address fundamental transport limitations often overlooked in Golden Rule calculations. However, this analysis also points to simple changes that could significantly improve, although not perfect, the treatment of carrier capture via these latter more conventional approaches.

TWO-COLOR COHERENT CONTROL OF OPTICAL BISTABILITY IN ASYMMETRIC SEMICONDUCTOR QUANTUM WELLS

2008 ◽  
Vol 22 (06) ◽  
pp. 393-404 ◽  
Author(s):  
JIA-HUA LI ◽  
XIANG-YING HAO
Keyword(s):  
Quantum Wells ◽  
Optical Switching ◽  
Optical Bistability ◽  
Coherent Control ◽  
Second Harmonic ◽  
Intersubband Transitions ◽  
Fundamental Field ◽  
Harmonic Field ◽  
Semiconductor Quantum Wells ◽  
Semiconductor Quantum Well

We investigate optical bistability in intersubband transitions of an asymmetric semiconductor quantum well structure that has equidistant transitions between three subbands of the system and is placed in a unidirectional cavity. The system is simultaneously coupled by a fundamental field and its second harmonic. The second harmonic field acts as a control field and significantly influences the optical bistability. In addition, the two-color coherent control of optical bistability by the relative phase of the fundamental and the second harmonic fields is shown. The influence of the electronic cooperation parameter on the OB behavior is also discussed. This investigation may be used for optimizing and controlling the optical switching process in the SQW solid-state system, which is much more practical than that in the atomic system because of its flexible design and the controllable interference strength.

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