Dual-comb spectroscopy is an emerging new spectroscopic tool that exploits the frequency
resolution, frequency accuracy, broad bandwidth, and brightness of frequency combs for …

We review the most recent progress in ultralow-noise mode-locked fiber lasers and fiber-
based frequency-comb sources. With the rapid progress in theory, measurement, and …

The detection and measurement of gas concentrations using the characteristic optical
absorption of the gas species is important for both understanding and monitoring a variety of …

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 …

Infrared spectroscopy in the 3–20 μm spectral window has evolved from a routine laboratory
technique into a state-of-the-art spectroscopy and sensing tool by benefitting from recent …

The demonstration satellite GHGSat-D, or “Claire”, launched on 21 June 2016, is the first in
a planned constellation of small satellites designed and operated by GHGSat, Inc. to …

Optical spectroscopy has a broad scientific basis in chemistry, physics, and material science,
with diverse applications in medicine, pharmaceuticals, agriculture, and environmental …

Spectroscopy in the molecular fingerprint spectral region (6.7–20 µm) yields critical
information on material structure for physical, chemical, and biological sciences. Despite …

Dual-comb spectroscopy holds the promise as real-time, high-resolution spectroscopy tools.
However, in its conventional schemes, the stringent requirement on the coherence between …

Mid-infrared (mid-IR) frequency combs have broad applications in molecular spectroscopy
and chemical/biological sensing. Recently developed microresonator-based combs in this …