Absence of filamentation in quantum-dot lasers. Theory and experiment

We theoretically and experimentally investigate the lateral mode behavior of quantum-dot lasers, and demonstrate the absence of filamentation up to 10/spl times/ threshold. The negative linewidth enhancement factor necessary for filamentation in highly-excited quantum dot lasers originates from the...

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Bibliographic Details
Published inIEEE 18th International Semiconductor Laser Conference pp. 149 - 150
Main Authors Chow, W.W., Schneider, H.C., Pearce, E.J., Smowton, P.M.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2002
Subjects
Electrons
Laser excitation
Laser modes
Laser theory
Optical saturation
Performance gain
Quantum dot lasers
Quantum dots
Quantum mechanics
Quantum well lasers
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Summary:We theoretically and experimentally investigate the lateral mode behavior of quantum-dot lasers, and demonstrate the absence of filamentation up to 10/spl times/ threshold. The negative linewidth enhancement factor necessary for filamentation in highly-excited quantum dot lasers originates from the Coulomb coupling between quantum-dot and quantum-well states.
ISBN:078037598X
9780780375987
DOI:10.1109/ISLC.2002.1041160