High power photonic crystal distributed feedback quantum cascade lasers emitting at 4.5 μm

Burç Gökden*, Steven Boyd Slivken, Manijeh Razeghi

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Quantum cascade lasers possess very small linewidth enhancement factor, which makes them very prominent candidates for realization of high power, nearly diffraction limited and single mode photonic crystal distributed feedback broad area lasers in the mid-infrared frequencies. In this paper, we present room temperature operation of a two dimensional photonic crystal distributed feedback quantum cascade laser emitting at 4.5 μm. peak power up to ∼0.9 W per facet is obtained from a 2 mm long laser with 100 μm cavity width at room temperature. The observed spectrum is single mode with a very narrow linewidth. Far-field profile has nearly diffraction limited single lobe with full width at half maximum of 3.5o normal to the facet. The mode selection and power output relationships are experimentally established with respect to different cavity lengths for photonic crystal distributed feedback quantum cascade lasers.

Original languageEnglish (US)
Title of host publicationQuantum Sensing and Nanophotonic Devices VII
Volume7608
DOIs
StatePublished - May 13 2010
EventQuantum Sensing and Nanophotonic Devices VII - San Francisco, CA, United States
Duration: Jan 24 2010Jan 28 2010

Other

OtherQuantum Sensing and Nanophotonic Devices VII
CountryUnited States
CitySan Francisco, CA
Period1/24/101/28/10

Keywords

  • Broad area laser
  • Photonic crystal distributed feedback laser
  • Quantum cascade laser

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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