High power spiral cavity quantum cascade superluminescent emitter

Mei C. Zheng, Nyan L. Aung, Abanti Basak, Peter Q. Liu, Xiaojun Wang, Jen Yu Fan, Mariano Troccoli, Claire F. Gmachl

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Quantum Cascade devices with an emission wavelength centered around 5 μm have been shaped into compact, yet long (8 mm and 12 mm) spiral cavities to increase mid-infrared superluminescence (SL) power. Up to ∼57 mW of SL power at 250 K is obtained with a Gaussian emission spectrum with a full width at half maximum of 56 cm-1 and a coherence length of ∼107 μm.

Original languageEnglish (US)
Pages (from-to)2713-2719
Number of pages7
JournalOptics Express
Issue number3
StatePublished - Feb 9 2015

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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