scholarly journals Suppression of bulk conductivity in InAs/GaSb broken gap composite quantum wells

2013 ◽  
Vol 103 (11) ◽  
pp. 112102 ◽  
Author(s):  
Christophe Charpentier ◽  
Stefan Fält ◽  
Christian Reichl ◽  
Fabrizio Nichele ◽  
Atindra Nath Pal ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Bulk Conductivity ◽  
Broken Gap

Theoretical Performance of MID-IR Broken-Gap Superlattice Quantum Well Lasers

1996 ◽  
Vol 450 ◽  
Author(s):  
Michael E. Flatté ◽  
C. H. Grein ◽  
J. T. Olesberg ◽  
T. F. Boggess
Keyword(s):  
Quantum Well ◽  
Quantum Wells ◽  
Threshold Current ◽  
Quantum Well Lasers ◽  
Type Ii Superlattice ◽  
Superlattice Structure ◽  
Current Densities ◽  
Semi Empirical ◽  
Broken Gap ◽  
The Ideal

ABSTRACTWe will present calculations of the ideal performance of mid-infrared InAs/InGaSb superlattice quantum well lasers. For these systems several periods of an InAs/InGaSb type-II superlattice are grown in quantum wells. Calculations of the non-radiative and radiative lifetimes of the carriers utilize the full non-parabolic band structure and momentum-dependent matrix elements calculated from a semi-empirical multilayer K · P theory. From these lifetimes, threshold current densities have been evaluated for laser structures. We find serious problems with the hole and electron confinement in the superlattice quantum wells grown to date, and propose a four-layer superlattice structure which corrects these problems.

Exchange-induced terahertz minigap in InAs∕GaSb type II and broken-gap quantum wells

2008 ◽  
Vol 92 (16) ◽  
pp. 162108 ◽  
Author(s):  
W. Xu ◽  
X. F. Wei ◽  
J. Zhang
Keyword(s):  
Quantum Wells ◽  
Type Ii ◽  
Broken Gap

MWIR Interband Lasers Employing Broken-gap Superlattices and Quantum Wells

1999 ◽  
Author(s):  
T.C. Hasenberg ◽  
T.F. Boggess ◽  
M.E. Flatte ◽  
J.T. Olesberg ◽  
C.H. Grein
Keyword(s):  
Quantum Wells ◽  
Broken Gap

scholarly journals Tunable band gap inversion in broken gap quantum wells

2017 ◽  
Author(s):  
Marcelo Alejandro Toloza Sandoval ◽  
Tiago de Campos ◽  
Guilherme Matos Sipahi
Keyword(s):  
Quantum Wells ◽  
Band Gap ◽  
Broken Gap ◽  
Tunable Band Gap

scholarly journals Optical anisotropy of InAs/GaSb broken-gap quantum wells

2012 ◽  
Vol 114 (5) ◽  
pp. 731-737
Author(s):  
A. A. Zakharova ◽  
I. A. Semenikhin ◽  
K. A. Chao
Keyword(s):  
Quantum Wells ◽  
Optical Anisotropy ◽  
Broken Gap

SPECTRUM OF CARRIERS AND OPTICAL PROPERTIES OF 2D HETEROSTRUCTURES IN TILTED MAGNETIC FIELD

2003 ◽  
Vol 02 (06) ◽  
pp. 401-409
Author(s):  
A. A. GRESHNOV ◽  
E. N. KOLESNIKOVA ◽  
G. G. ZEGRYA
Keyword(s):  
Magnetic Field ◽  
Optical Properties ◽  
Quantum Wells ◽  
Cyclotron Resonance ◽  
Double Quantum ◽  
Electron States ◽  
Double Quantum Well ◽  
Magnetic Length ◽  
Broken Gap ◽  
Tilted Magnetic Field

The structure and features of spatially-confined states in the presence of a tilted magnetic field are theoretically investigated. The electron states in single- and double-quantum wells are described using the variational method. It is shown that the finite ratio of magnetic length to the width of heterostructure could not be neglected in the strong tilted magnetic field. The electronic structure of broken-gap heterostructures is considered similar to the case of usual double-quantum-well with the high narrow barrier. It is shown that tilted magnetic field can eliminate the strong coupling between two degenerated electron states or those of the electron and hole. The existence of such an effect is in accordance with cyclotron resonance studies of InAs / GaSb heterostructures.

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