Theoretical Gain of QuantumWell Wire Lasers
Abstract
Gain is given theoretically for quantumwell wire lasers where electrons are confined onedimensionally. Maximum gain is obtained for a quantumwell wire perpendicular to light propagation, due to anisotropy of the dipole moment. Although the densityofstates is infinite at subband edges, gain remains finite due to the intraband relaxation. Therefore, high gain can be obtained by reducing intraband scatterings. Gain in 100 Å×100 Å Ga_{0.47}In_{0.53}As/InP quantumwell wires is about twice that in 100 Å thick conventional quantumwells, and reduction of the laser threshold is expected.
 Publication:

Japanese Journal of Applied Physics
 Pub Date:
 February 1985
 DOI:
 10.1143/JJAP.24.L95
 Bibcode:
 1985JaJAP..24L..95A
 Keywords:

 Laser Outputs;
 Light Amplifiers;
 Quantum Wells;
 Solid State Lasers;
 Bloch Band;
 Confinement;
 Dipole Moments;
 Gallium Arsenide Lasers;
 Heterojunctions;
 Relaxation (Mechanics);
 Temperature Dependence;
 Threshold Currents;
 Traveling Waves;
 Wave Functions;
 Lasers and Masers