Cavity-Enhanced Vernier Spectroscopy with a Chip-Scale Mid-Infrared Frequency Comb

  title={Cavity-Enhanced Vernier Spectroscopy with a Chip-Scale Mid-Infrared Frequency Comb},
  author={Lukasz A. Sterczewski and Tzu-Ling Chen and Douglas C. Ober and Charles R. Markus and Chadwick L. Canedy and Igor Vurgaftman and Clifford F. Frez and Jerry R. Meyer and Mitchio Okumura and Mahmood Bagheri},
  journal={ACS Photonics},
Chip-scale optical frequency combs can provide broadband spectroscopy for diagnosing complex organic molecules. They are also promising as miniaturized laser spectrometers in applications ranging from atmospheric chemistry to geological science and the search for extraterrestrial life. While optical cavities are commonly used to boost sensitivity, it is challenging to realize a compact cavityenhanced comb-based spectrometer. Here, we apply the Vernier technique to free-running operation of an… 
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