In:
physica status solidi (b), Wiley, Vol. 247, No. 4 ( 2010-04), p. 809-828
Abstract:
We present a microscopic theory describing the charge carrier and light emission dynamics in quantum dot (QD) light emitters. The theory covers non‐classical light emission (fluorescence and Raman emission) in the low carrier injection limit as well as laser emission and pulse amplification in the high carrier injection limit. The theoretical approach is based on QD Bloch equations including microscopically calculated Coulomb and electron–phonon scattering rates between bound QD, continuous wetting layer (WL) and bulk states. In the low carrier density limit, multi‐phonon relaxation is the dominant process, while at high charge carrier densities, Coulomb scattering dominates the dynamics. Using an equation of motion approach, we address (i) time‐resolved fluorescence and Raman emission, (ii) electrical injection and charge carrier transfer from bulk into WL and QD states, (iii) single photon emission and (iv) gain dynamics of QD amplifiers and lasing dynamics in QD vertical‐cavity surface‐emitting lasers (VCSELs) at high injection currents.
Type of Medium:
Online Resource
ISSN:
0370-1972
,
1521-3951
DOI:
10.1002/pssb.200945433
Language:
English
Publisher:
Wiley
Publication Date:
2010
detail.hit.zdb_id:
208851-4
detail.hit.zdb_id:
1481096-7