High-power, continuous-wave, current-tunable, single-mode quantum-cascade distributed-feedback lasers at λ ≅ 5.2 and λ ≅ 7.95 μm

Claire Gmachl, Federico Capasso, Alessandro Tredicucci, Deborah L. Sivco, James N. Baillargeon, Albert L. Hutchinson, Alfred Y. Cho

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

Quantum-cascade distributed-feedback lasers with high-power, continuous-wave (cw), tunable, single-mode emission are reported. The emission wavelengths are near 5.2 and 7.95 μm. The lasers are operated at liquid-nitrogen temperature and above. A maximum output power of >100 mW is obtained per facet at 80 K for both wavelengths, which is the result of careful positioning of the peak gain with respect to the Bragg wavelength. Continuous tuning with either heat-sink temperature or cw current is demonstrated. The tuning coefficients are 0.35 nm/K (5.2 μm) and 0.51 nm/K (7.95 μm) for thermal tuning and vary from 20 to 40 nm/A for tuning with current. The lasers are being used in high-resolution and high-sensitivity gas-sensing applications.

Original languageEnglish (US)
Pages (from-to)230-232
Number of pages3
JournalOptics Letters
Volume25
Issue number4
DOIs
StatePublished - Feb 15 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Fingerprint Dive into the research topics of 'High-power, continuous-wave, current-tunable, single-mode quantum-cascade distributed-feedback lasers at λ ≅ 5.2 and λ ≅ 7.95 μm'. Together they form a unique fingerprint.

  • Cite this