Many-body effects in the gain spectra of highly excited quantum-dot lasers
Journal Article
·
· Physical Review B
Optical gain spectra are computed for quantum dots under high excitation conditions, where there is a non-negligible two-dimensional carrier density surrounding the dots. Using a screened Hartree-Fock theory to describe the influence of the Coulomb interaction, we find different self-energy shifts for the dot and quantum-well transitions. Furthermore, in contrast to the result for quantum-well and bulk systems, the peak gain at the quantum-dot transition computed including Coulomb effects is reduced from its free carrier value.
- Research Organization:
- Sandia National Laboratory
- Sponsoring Organization:
- (US)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 40277589
- Journal Information:
- Physical Review B, Vol. 64, Issue 11; Other Information: DOI: 10.1103/PhysRevB.64.115315; Othernumber: PRBMDO000064000011115315000001; 064135PRB; PBD: 15 Sep 2001; ISSN 0163-1829
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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