Direct and indirect capture of carriers into the lasing ground state and the light-current characteristic of quantum dot lasers

Journal Article · Fri Mar 14 04:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4868472· OSTI ID:22277877

Wu, Yuchang

We calculate the light-current characteristic (LCC) of a quantum dot (QD) laser under the conditions of both direct and indirect capture of carriers from the optical confinement layer into the lasing ground state in QDs. We show that direct capture is a dominant process determining the ground-state LCC. Only when direct capture is slow, the role of indirect capture (capture into the QD excited state and subsequent intradot relaxation to the ground state) becomes important.

• OSTI ID: 22277877
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 10 Vol. 115; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
CAPTURE
CHARGE CARRIERS
ELECTRIC CURRENTS
EXCITED STATES
GROUND STATES
LAYERS
QUANTUM DOTS
RELAXATION
SOLID STATE LASERS
VISIBLE RADIATION