On the Evolution of Carrier Distribution and Wavelength Switching in Asymmetric Multiple Quantum-Well Lasers

The evolution of the carrier distribution with current in two different asymmetric multiple quantum laser structures was studied experimentally through measurements of electroluminescence (EL). The EL was measured through the substrates of lasers and provided information about the carrier distributi...

Full description

Saved in:
Bibliographic Details
Published in:IEEE journal of quantum electronics 2007-03, Vol.43 (3), p.243-248
Main Authors: Huiling Wang, Bruce, D.M., Cassidy, D.T.
Format: Article
Language:English
Subjects:
Asymmetric multiple quantum well lasers
Carrier density
carrier distribution
Carriers
Clamps
Electroluminescence
electroluminescence (EL) spectrum
Evolution
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Gain
Gain measurement
inhomogeneous broadening
Laser theory
Laser transitions
Laser tuning
Lasers
Optics
Physics
Quantum well devices
Quantum well lasers
Semiconductor lasers
laser diodes
Skewed distributions
Switches
thermal effects
Thresholds
Wavelength measurement
wavelength switching
Wavelengths
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The evolution of the carrier distribution with current in two different asymmetric multiple quantum laser structures was studied experimentally through measurements of electroluminescence (EL). The EL was measured through the substrates of lasers and provided information about the carrier distributions. The carrier concentration was observed to increase with current both below and above threshold, presumably owing to the change of threshold conditions. The switch of the lasing wavelength from long to short wavelength was explained by inhomogeneous broadening of the gain of the wells and by incomplete clamping of the carrier concentration above threshold, as inferred from the measured EL and gain spectra. The role of thermal effects was investigated by comparing the laser performance under continuous-wave and pulsed operation
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.2006.889749