Quantum dot semiconductor lasers with optical feedback
physica status solidi (a), 2004•Wiley Online Library
We analyse the sensitivity of quantum dot semiconductor lasers to optical feedback. While
bulk and quantum well semiconductor lasers are usually extremely unstable when submitted
to back reflection, quantum dot semiconductor lasers exhibit a reduced sensitivity. Using a
rate equation approach, we show that this behaviour is the result of a relatively low but
nonzero line‐width enhancement factor and strongly damped relaxation oscillations.(© 2004
WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
bulk and quantum well semiconductor lasers are usually extremely unstable when submitted
to back reflection, quantum dot semiconductor lasers exhibit a reduced sensitivity. Using a
rate equation approach, we show that this behaviour is the result of a relatively low but
nonzero line‐width enhancement factor and strongly damped relaxation oscillations.(© 2004
WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Abstract
We analyse the sensitivity of quantum dot semiconductor lasers to optical feedback. While bulk and quantum well semiconductor lasers are usually extremely unstable when submitted to back reflection, quantum dot semiconductor lasers exhibit a reduced sensitivity. Using a rate equation approach, we show that this behaviour is the result of a relatively low but nonzero line‐width enhancement factor and strongly damped relaxation oscillations. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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