Occasionally abbreviated to DCS, dual-comb spectroscopy is an innovative spectroscopic method that utilizes two coherent laser sources with equally-spaced, discrete frequency lines. Frequency comb is ...

Dual-comb spectroscopy is an innovative optical technique that exploits pairs of laser frequency combs—light sources whose spectra consist of equidistant narrow lines—to facilitate high-resolution, ...

With the advancement of laser technology, ultrashort pulsating lasers give a new technological technique for highly precise spectroscopic measurement. To precisely monitor wavelengths, the optical ...

How it works: the top frequency comb is passed through a sample of interest and then into a beamsplitter. The bottom frequency comb operates at a slightly different pulse repetition frequency and is ...

Dual-comb spectroscopy (DCS) has rapidly become a cornerstone of precision molecular detection, offering unparalleled resolution, broad spectral coverage, and fast acquisition speed. From fundamental ...

…and Stanford launches “micro” frequency comb, as basis for mass-market adoption of such devices. An ultraviolet photon-counting dual-comb spectrometer. Scientists in the group of Nathalie Picqué at ...

Columbia Engineers are the first to miniaturize dual-frequency combs by putting two frequency comb generators on a single millimeter-sized silicon-based chip; could lead to low-cost, portable sensing, ...

An ultraviolet photon-counting dual-comb spectrometer. Two ultraviolet frequency combs of slightly different pulse repetition frequencies are generated at very low light levels by nonlinear frequency ...

Scientists in Germany have uncovered previously unknown properties of the rare Earth element samarium by developing a powerful new technique to investigate the internal structure of atoms. For the ...

Huang (left) and a graduate student discuss a project in their lab. It is sometimes said that science is about truth, while engineering is about compromise. With one laser project in his lab in the ...

In a new paper published today in Science Advances, researchers under the direction of Columbia Engineering Professors Michal Lipson and Alexander Gaeta (Applied Physics and Applied Mathematics) have ...