Free-running frequency stability of mid-infrared quantum cascade lasers

Tanya L. Myers, R. M. Williams, M. S. Taubman, C. Gmachl, F. Capasso, D. L. Sivco, J. N. Baillargeon, A. Y. Cho

Research output: Contribution to journalArticlepeer-review

62 Scopus citations


The intrinsic frequency fluctuations of two single-mode quantum cascade (QC) distributed-feedback lasers operating continuously at a wavelength of 8.5 μm are reported. A Doppler-limited rovibrational resonance of nitrous oxide is used to transform the frequency noise into measurable intensity fluctuations. The QC lasers, along with recently improved current controllers, exhibit a free-running frequency stability of 150 kHz over a 15-ms time interval.

Original languageEnglish (US)
Pages (from-to)170-172
Number of pages3
JournalOptics Letters
Issue number3
StatePublished - Feb 1 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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