Mid-infrared frequency combs

By A. Schliesser, N. Picqué, T. Hänsch. Nature Photonics, 2012

1,260 citations recorded by the source corpus.

This Review discusses the emerging field of mid-infrared frequency comb generation, including technologies based on novel laser gain media, nonlinear frequency conversion and microresonators, as well as the applications of these combs in precision spectroscopy and direct frequency comb spectroscopy. Laser frequency combs are coherent light sources that emit a broad spectrum of discrete, evenly spaced narrow lines whose absolute frequency can be measured to within the accuracy of an atomic clock. Their development in the near-infrared and visible domains has revolutionized frequency metrology while also providing numerous unexpected opportunities in other fields such as astronomy and attosecond science. Researchers are now exploring how to extend frequency comb techniques to the mid-infrared spectral region. Versatile mid-infrared frequency comb generators based on novel laser gain media, nonlinear frequency conversion or microresonators promise to significantly expand the applications of frequency combs. In particular, novel approaches to molecular spectroscopy in the 'fingerprint region', with dramatically improved precision, sensitivity, recording time and/or spectral bandwidth may lead to new discoveries in the various fields relevant to molecular science.

Subfields: Atomic and Molecular Physics, and Optics, Spectroscopy

View Paper: https://www.semanticscholar.org/paper/65b02ac5ea11bd1c2762d761581910a7fd5d91fa

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In Atomic and Molecular Physics, and Optics

In Spectroscopy

Citations in the corpus

Kerr optical frequency combs: theory, applications and perspectives (2016, methodology): “However, particular efforts have been invested in recent years to explore the mid-infrared (IR) range where a large set of molecules of interest have their spectroscopic signature [71].”
Massively parallel sensing of trace molecules and their isotopologues with broadband subharmonic mid-infrared frequency combs (2018, background): “Spectroscopic applications of optical frequency combs include (1) sensing with a broadband comb that directly interrogates an absorbing sample, after which the spectrum is dispersed in two dimensions and sensed with detector arrays4–6, (2) Michelson interferometer-based Fourier-transform spectroscop”
Modelocked mid-infrared frequency combs in a silicon microresonator (2016, positive): “Progress in fabrication techniques for low-loss nonlinear devices has led to significant development of comb generation in the mid-infrared (mid-IR) regime [13 – 19], which is a highly attractive spectral region for applications in molecular spectroscopy and chemical and biological sensing [20].”