Optical frequency combs offer an unrivalled degree of frequency measurement precision
that underpins the advance of modern technology in both fundamental science and …

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 …

Dual-comb spectroscopy performed in the mid-infrared—where molecules have their
strongest rotovibrational absorption lines—offers the promise of high spectral resolution …

Optical frequency combs act as rulers in the frequency domain and have opened new
avenues in many fields such as fundamental time metrology, spectroscopy and frequency …

Terahertz light can be used to identify numerous complex molecules, but has traditionally
remained unexploited due to the lack of powerful broadband sources. Pulsed lasers can be …

Ultrafast fiber lasers have the potential to make applications of ultrashort pulses widespread–
techniques not only for scientists, but also for doctors, manufacturing engineers, and more …

It was recently demonstrated that broadband quantum cascade lasers can operate as
frequency combs. As such, they operate under direct electrical pumping at both mid-infrared …

The mid-infrared (mid-IR) is a wavelength range with a variety of technologically vital
applications in molecular sensing, security and defense, energy conservation, and …

The generation of stable trains of ultrashort (femtosecond to picosecond), terahertz-
frequency radiation pulses with large instantaneous intensities is an underlying requirement …

Pulsed lasers operating in the mid-infrared (3–20 μm) are important for a wide range of
applications in sensing, spectroscopy, imaging and communications. Despite recent …