Analysis of relative intensity noise spectra for uniformly and chirpily stacked InAs-InGaAs-GaAs quantum dot lasers

Kuo-Jui Lin*, Hao Ling Tang, Hsu Chieh Cheng, Hung Lin Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The dynamic properties of uniformly and chirpily stacked InAs-InGaAs-GaAs quantum dot lasers are analyzed in terms of relative intensity noise spectra. For uniformly stacked quantum dot laser with ground-state lasing emissions of 1.3 μm, the K-factor limited bandwidth is 13 GHz. The extracted differential gain and gain compression factor are 1.7 × 10 - 15 cm 2 and 2 × 10 - 16 cm 3 , respectively. For chirpily stacked quantum dot laser with excited-state lasing emissions of 1.2 \mu m, the K -factor limited bandwidth is 14 GHz. Yet the nonproportional dependence between resonance frequency and square root of incremental current yields differential gain of 4.3 × 10 - 15 cm 2 and huge gain compression factor of 1.4 × 10 - 14 cm 3.

Original languageEnglish
Article number6105497
Pages (from-to)331-336
Number of pages6
JournalJournal of Lightwave Technology
Volume30
Issue number3
DOIs
StatePublished - 1 Feb 2012

Keywords

  • Differential gain
  • gain compression
  • quantum dot lasers
  • relative intensity noise (RIN)

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