Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7940315 | Superlattices and Microstructures | 2017 | 12 Pages |
Abstract
Recently, the concept of the terahertz bosonic cascade laser (BCL) based on a parabolic quantum well (PQW) embedded in a microcavity was proposed. We refine this proposal by suggesting transitions between indirect exciton (IX) states as a source of terahertz emission. We explicitly propose a structure containing a narrow-square QW and a wide-parabolic QW for the realisation of a bosonic cascade. Advantages of this type of structures are in large dipole matrix elements for terahertz transitions and in long exciton radiative lifetimes which are crucial for realisation of threshold and quantum efficiency BCLs.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
A.V. Nalitov, S. De Liberato, P. Lagoudakis, P.G. Savvidis, A.V. Kavokin,