The mid-infrared atmospheric window of 3–5.5 μ m holds valuable information regarding
molecular composition and function for fundamental and applied spectroscopy. Using a …

This article provides an overview of laser-based absorption spectroscopy applications and
discusses the parameter space and requirements of laser systems for each of these …

High-harmonic generation (HHG) provides short-wavelength light that is useful for precision
spectroscopy and probing ultrafast dynamics. We report efficient, phase-coherent harmonic …

Parametric downconversion driven by modern, high-power sources of 10-fs-scale near-
infrared pulses, in particular intrapulse difference-frequency generation (IPDFG), affords …

Femtosecond enhancement cavities are key to applications including high-sensitivity linear,–
and nonlinear, gas spectroscopy, as well as efficient nonlinear optical frequency …

We review the recent developments in precision ro-vibrational spectroscopy of buffer-gas-
cooled neutral molecules, obtained using infrared frequency combs either as direct probe …

While mid-infrared optical frequency combs have been widely utilized in areas such as trace
gas sensing, chemical kinetics, and combustion science, their relatively low power has …

Recent advancements in infrared frequency combs will enable facile recording of coherent
two-dimensional infrared spectra of gas-phase molecules with rotational resolution …

Electric-field oscillations are now experimentally accessible in the THz-to-PHz frequency
range. Their measurement delivers the most comprehensive information content attainable …

Within the domain of optical frequency comb systems operating in the mid-infrared region,
extensive exploration has been undertaken regarding critical parameters, such as …