Results 221 to 230 of about 790,133 (299)

Optical absorption of type-II superlattices

Physical Review B, 1997
Optical spectra of type-II superlattices are presented, including Coulomb interaction and continuum states. We clarify the relative importance of above- and below-barrier transitions. By gradually increasing the band-gap modulation, we visualize the transition from a bulk semiconductor to a type-I or type-II superlattice.
Glutsch, Stephan, Lefebvre, Pierre, S. Chemla, Daniel   +2 more
openaire   +2 more sources

Strained type II superlattices

Surface Science, 1988
Abstract We investigate the electronic structure of the strained type II superlattice InAs/Ga 1− x In x Sb. Strain, which is adjusted by the alloy composition, x , significantly changes the electronic structure of the superlattice and allows small band gap materials to be achieved in thin layer superlattices.
D.L. Smith, C. Mailhiot
openaire   +1 more source

Type-II superlattice: Inversion of the dielectric function

Physical Review B, 1986
Explicit analytic results are presented here for the direct position-space inversion of the longitudinal dielectric function of a type-II biplane superlattice where electron-hole motions are confined to be on pairs of parallel two-dimensional planes. The results are expressed in terms of the dynamic nonlocal two-dimensional polarizabilities of the 2 ...
, Horing, , Mancini
openaire   +2 more sources

Type-II Superlattice Mid-Wavelength Infrared Focal Plane Arrays for CubeSat Hyperspectral Imaging

IEEE Photonics Technology Letters, 2022
InAs/InAsSb type-II strained layer superlattice high-operating temperature barrier infrared detector (HOT-BIRD) focal plane arrays (FPAs) were fabricated for mid-wavelength infrared hyperspectral imaging applications on the CubeSat Infrared Atmospheric ...
D. Ting, Sir Rafol, A. Khoshakhlagh, S. Keo, A. Soibel, A. Fisher, B. Pepper, C. Hill, S. Gunapala, T. Pagano   +9 more
semanticscholar   +1 more source

Surface Plasmons in Type II Superlattices

physica status solidi (b), 1988
AbstractA semi‐infinite type II semiconductor superlattice is studied using coupled Boltzmann equations. The exact equation is obtained for the surface plasma modes when the dielectric media inside and outside the surface are different. The number of solutions which are free from Landau damping depends on the parameters used.
Sy, H.K., Song, L.M.
openaire   +1 more source

Electroabsorption in the type II superlattices

Applied Physics Letters, 1992
Electric field dependence of the optical absorption in the ZnSe0.35Te0.65-ZnSe type II superlattice has been studied. An extremely large blue shift of the absorption edge found for the structure makes it an attractive choice for the waveguide visible light modulators.
Shaozhong Li, Jacob B. Khurgin
openaire   +1 more source

Type-II superlattices: the Fraunhofer perspective

SPIE Proceedings, 2010
In the past years, the development of the type-II InAs/GaSb superlattice technology at the Fraunhofer-Institute for Applied Solid State Physics (IAF) has been focused on achieving series-production readiness for third generation dualcolor superlattice detector arrays for the mid-wavelength infrared spectral range. The technology is ideally suited for
Robert Rehm, Martin Walther, Johannes Schmitz, Frank Rutz, Andreas Wörl, Ralf Scheibner, Johann Ziegler   +6 more
openaire   +1 more source

Type-II superlattice photodetectors versus HgCdTe photodiodes

Remote Sensing, 2019
Since the first paper published by Sakaki and Esaki in 1978, it is well known that InAs and GaSb constitute a nearly lattice-matched material system offering great flexibility in the design of IR optoelectronic devices. After four decades, the III-V type-
A. Rogalski, P. Martyniuk, M. Kopytko
semanticscholar   +1 more source

Effect of position-dependent effective mass on electron tunneling of InAs/GaSb type-II superlattice having triangular and parabolic geometries

, 2021
In a recent paper, we presented transmission probability of a triple quantum well triple barrier structure having triangular and parabolic geometries in presence of finite thick contact barriers using propagation matrix method for InAs/GaSb type-II ...
E. Rostampour
semanticscholar   +1 more source

Excitonic electroabsorption in type II superlattices

Applied Physics Letters, 1992
Electric field dependence of the exciton absorption in the ZnSe0.35Te0.65-ZnTe type II superlattice has been studied theoretically. Large effective blue shift of the absorption edge and strong modulation of the absorption prove that type II structures can be used in visible spatial light modulators and switches.
Shaozhong Li, Jacob B. Khurgin
openaire   +1 more source