Nonequilibrium carrier corrections to the optical gain in semiconductor quantum well structures

2008 ◽  
Vol 5 (1) ◽  
pp. 370-373
Author(s):  
Philip Weetman ◽  
Marek S. Wartak
Keyword(s):  
Quantum Well ◽  
Optical Gain ◽  
Nonequilibrium Carrier ◽  
Quantum Well Structures ◽  
Semiconductor Quantum Well

INTERSUBBAND SPECTROSCOPY IN QUANTUM WELL STRUCTURES AT HIGH NONEQUILIBRIUM CARRIER DENSITIES

2003 ◽  
Vol 02 (06) ◽  
pp. 445-451 ◽  
Author(s):  
A. SEILMEIER ◽  
S. HANNA ◽  
V. A. SHALYGIN ◽  
D. A. FIRSOV ◽  
L. E. VOROBJEV ◽  
...  
Keyword(s):  
Quantum Well ◽  
Visible Spectral Range ◽  
Nonequilibrium Carrier ◽  
Free Carrier Absorption ◽  
Time Behavior ◽  
Mid Infrared ◽  
Quantum Well Structures ◽  
Picosecond Pulses ◽  
Semiconductor Quantum Well ◽  
Carrier Absorption

In the present paper, the electronic intersubband transitions in semiconductor quantum well structures are investigated using transient mid infrared absorption spectroscopy after interband photoexcitation with intense picosecond pulses in the visible spectral range. The focus of our investigations is on the e2–e3 intersubband transition in an asymmetric undoped GaAs / AlGaAs quantum well (QW) structure at room temperature. At injected nonequilibrium carrier densities of 1×1013 cm -2 per QW, an e2–e3 absorption band at 99 meV is found which is blue-shifted with increasing carrier density. Intersubband absorption signals are distinguished from free-carrier absorption signals in the mid infrared (MIR) by their characteristic time behavior.

scholarly journals Optimization of Optical Gain in Inx Ga1-xSb/GaSb Unstrained Quantum Well Structures

2015 ◽  
Vol 74 ◽  
pp. 191-197 ◽  
Author(s):  
Said Dehimi ◽  
Aissat Abdelkader ◽  
Djamel Haddad ◽  
Lakhdar Dehimi
Keyword(s):  
Quantum Well ◽  
Optical Gain ◽  
Quantum Well Structures

Thermopower in Quasi-Two-Dimensional Semiconductor Quantum Well Structures

1986 ◽  
Vol 137 (2) ◽  
pp. 683-689 ◽  
Author(s):  
S. S. Kubakaddi ◽  
B. G. Mulimani ◽  
V. M. Jali
Keyword(s):  
Quantum Well ◽  
Two Dimensional ◽  
Quantum Well Structures ◽  
Semiconductor Quantum Well
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