Dual comb spectroscopy is introduced, a technique that is based
on the beating of two frequency combs. A sample is first interrogated by
the combs before they are beat together via photodiode which down converts
the signal from the optical to RF domain where it can be processed with electronics. A overview of the concept is given as well as a brief look into
current achievements and limitations.
nanoHUB.org, a resource for nanoscience and nanotechnology, is supported by the National Science Foundation and other funding agencies. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.