Octave-wide mid-infrared frequency comb source

Researchers in Prof. Robert Byer's laboratory have developed a new fiber laser technology for generating frequency combs with broadband output (an octave or more). The frequency combs target the mid-infrared (IR) region, where the molecular signatures for most atmospheric organics, volatiles, and isotopes are found. This ultrabroadband mid-IR source could be an indispensible tool for coherent frequency-comb spectroscopy, combining broad spectral bandwidth, high spectral resolution, precise frequency calibration and ultrahigh detection sensitivity in one experimental platform. The technology can be used to develop tools to perform metrology or spectroscopy analysis with high sensitivity and specificity.

Stage of Research
The inventors have demonstrated that source can be used to transpose a frequency comb to longer waves (to its subharmonic) with simultaneous broadening of the comb spectrum by 2.6 times.

Ongoing Research
The inventors are refining the design for use in the mid-IR range.