Strong optical injection and the differential gain in a quantum dash laser

Luke F. Lester, Nader A. Naderi, Frederic Grillot, Ravi Raghunathan, Vassilios Kovanis

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

By optically injecting a quantum dash laser and simultaneously producing a significant lowering of the device threshold, a large enhancement in the differential gain is realized. This effect is observed by way of a dramatic reduction in the linewidth enhancement factor and a large increase in the 3-dB modulation bandwidth, especially as the injection wavelength is blue-shifted. Compared to its free-running value, a 50X improvement in the laser's differential gain is found.

Original languageEnglish
Pages (from-to)7222-7228
Number of pages7
JournalOptics Express
Volume22
Issue number6
DOIs
Publication statusPublished - 2014

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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