Inclusion of Bandstructure and Many-Body Effects in a Quantum Well Laser Simulator. Issue 1 (1998)

• Record Type: Journal Article
• Authors: Oyafuso, F.; von Allmen, P.; Grupen, M.; Hess, K.
• Is Part Of: VLSI design. Volume 8:Issue 1/4(1998)
• Page Start: 463
• Page End: 468
• Publication Date: 1998
• Subjects: Gain -- k.p -- laser -- quantum well -- modulation response -- bandstructure; Integrated circuits -- Very large scale integration -- Periodicals; 621.395
• DOI: 10.1155/1998/30974
• Languages: English
• ISSNs: 1065-514X

Abstract

Abstract : A self-consistent eight bandk.p calculation, which takes into account strain and includes Hartree, exchange, and correlation terms (determined from a local density approximation) is incorporated into a QW laser simulator (MINILASE-II). The computation is performed within the envelope function approximation for a superlattice, in which all spatially varying terms of thek.p Hamiltonian, including the exchange and correlation energies are expanded in plane waves. Thek.p eigenvalue equation, and Poisson's equation are solved iteratively until self-consistency is attained. Results from thek.p calculation are exported to MINILASE-II via a density of states and an energy dependent optical matrix element factor, renormalized by a Coulomb enhancement factor to account for electron-hole attraction. Results are presented for the gain spectrum and modulation response for a Ga0.8 In0.2 As/Al0.1 Ga0.9 As quantum well laser with and without the inclusion of the Coulomb enhancement factor.