Simple Narrow-Linewidth 1-5 μM Ingaasp dfb External-Cavity Laser

A. R. Chraplyvy, K. Y. Liou, R. W. Tkach, G. Eisenstein, Y. K. Jhee, T. L. Koch, P. J. Anthony, U. K. Chakrabarti

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


An external-cavity laser consisting of a 1-5μm-wavelength antireflection-coated DFB laser chip, a microscope objective and a mirror provides a stable, single-frequency, narrow-linewidth (Δf = 40 kHz) output. Because the laser operates in the strong feedback regime, it is immune to external optical perturbations. Single-longitudinal-mode operation is maintained by the DFB grating, and the linewidth is reduced by the extended passive cavity.

Original languageEnglish (US)
Pages (from-to)88-90
Number of pages3
JournalElectronics Letters
Issue number2
StatePublished - 1986


  • Optics
  • Semiconductor lasers

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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