A Time-Domain Model for High-Speed Quantum-Well Lasers Including Carrier Transport Effects

Linh V.T. Nguyen, Arthur James Lowery, Phillip C.R. Gurney, Dalma Novak

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80 Citations (Scopus)


Carrier transport plays an important role and can significantly affect the ultra-fast properties of quantum-well (QW) lasers. We present a detailed multi-mode time-domain large-signal dynamic model including the effects of carrier transport, suitable for the high-speed QW lasers. It is based on the well-proven transmission-line laser modelling technique with the addition of a multilevel system of coupled rate-equations. Simulated results from studies of both the static and small-signal properties are compared with measurements from another laboratory. Our model can accurately predict the modulation-bandwidth discontinuity in QW laser structures with large separate-confinement-heterostructure (SCH) regions. We use large-signal simulations to predict increased damping of transient responses and larger turn-on delays caused by the effects of carrier transport. Our large-signal simulations also show that an increase in the turn-on delay times is expected in QW structures with large carrier transport times across the SCH region, whereas the inter-well transport times do not affect the turn-on delay times significantly.

Original languageEnglish
Pages (from-to)494-504
Number of pages11
JournalIEEE Journal of Selected Topics in Quantum Electronics
Issue number2
Publication statusPublished - 1 Jan 1995
Externally publishedYes

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