Optical frequency combs were developed nearly two decades ago to support the world's
most precise atomic clocks. Acting as precision optical synthesizers, frequency combs …

A laser frequency comb is a broad spectrum composed of equidistant narrow lines. Initially
invented for frequency metrology, such combs enable new approaches to spectroscopy over …

Soliton frequency combs generate equally-distant frequencies, offering a powerful tool for
fast and accurate measurements over broad spectral ranges. The generation of solitons in …

Mid-infrared optical frequency combs are of significant interest for molecular spectroscopy
due to the large absorption of molecular vibrational modes on the one hand, and the ability …

Single-cavity dual-comb lasers are a new class of ultrafast lasers that have a wide possible
application space including pump–probe sampling, optical ranging, and gas absorption …

Vertical-external-cavity surface-emitting lasers (VECSELs) are the most versatile laser
sources, combining unique features such as wide spectral coverage, ultrashort pulse …

Remote chemical detection in the atmosphere or some specific space has always been of
great interest in many applications for environmental protection and safety. Laser absorption …

Photoacoustic dual-comb spectroscopy (DCS), converting spectral information in the optical
frequency domain to the audio frequency domain via multi-heterodyne beating, enables …

Dual-comb spectroscopy (DCS) is a promising approach for real time, high precision, and
high sensitivity Fourier-transform spectroscopy. DCS requires a pair of tightly phase-locked …

Ultraviolet spectroscopy provides unique insights into the structure of matter with
applications ranging from fundamental tests to photochemistry in the Earth's atmosphere …