Experimental observation of spectral tuning in twin-segment double quantum well (dqw) aigaas diode laser

I. H. White, J. J.S. Watts, B. Garrett

Research output: Contribution to journalArticle


Wavelength tuning of the spectral gain peak in an asymmetric twin segment DQW AIGaAs laser over 6 nm has been achieved by varying a reverse bias current to the shorter segment with high forward injection in the longer section. Tuning is attributed to bandgap narrowing at high charge concentrations, allowing the optical wavelength to hop across 70 consecutive modes.

Original languageEnglish
Pages (from-to)953-954
Number of pages2
JournalElectronics Letters
Issue number15
Publication statusPublished - 6 Jul 1989


  • LEDs
  • Optical communications
  • Semiconductor lasers

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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