Compact dual-wavelength InAs/GaAs quantum-dot external-cavity laser stabilized by a single volume Bragg grating

N. S. Daghestani, Maria Ana Cataluna, G. Ross, M. J. Rose

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Stable dual-wavelength operation has been achieved by combining a single volume Bragg grating with a quantum-dot-based gain medium in a compact external cavity configuration, with extreme ease of alignment. The dual-wavelength output was centered at 1179.9 and 1182.8 nm, with each mode exhibiting a spectral bandwidth ∼ 0.2 nm. A maximum output power of 186 mW was achieved, with both modes displaying a sidemode suppression-ratio (SMSR) of over 34 dB. Furthermore, the SMSR remained well over 26 dB within a broad current range (350-1000 mA) and temperature range (10.5°C-40°C). Unlike previous dual-wavelength configurations that used quantum-well-based devices, the quantum-dot-based laser here presented displays improved stability and resilience to changes in operating temperature and current.

Original languageEnglish
Article number5654537
Pages (from-to)176-178
Number of pages3
JournalIEEE Photonics Technology Letters
Volume23
Issue number3
DOIs
Publication statusPublished - Feb 2011

Keywords

  • Quantum-dot lasers
  • semiconductor lasers
  • terahertz technology
  • volume Bragg gratings

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials

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