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Linewidth enhancement factor of a type-I quantum-cascade laser

  • M. Lerttamrab
  • , S. L. Chuang
  • , C. Gmachl
  • , D. L. Sivco
  • , F. Capasso
  • , A. Y. Cho

Research output: Contribution to journalArticlepeer-review

Abstract

The linewidth enhancement factor of a type-I quantum-cascade laser was investigated. The optical gain spectra of the laser was extracted for the wavelength of 8.2 μm. Results showed a change in refractive index with increased bias current. The linewidth enhancement factor was found to be -0.5. A group index of around 3.47 was also determined.

Original languageEnglish (US)
Pages (from-to)5426-5428
Number of pages3
JournalJournal of Applied Physics
Volume94
Issue number8
DOIs
StatePublished - Oct 15 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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