Optical Frequency Combs for Space Applications

Stephanie Leifer, Scott A. Diddams, Kerry Vahala & Nan Yu
An Optical Frequency Comb (OFC) is an optical spectrum consisting of uniformly spaced lines. The stability of the line spacing is controlled by a radio frequency or microwave source. Moreover, if the comb is spectrally broadened to encompass an octave of bandwidth, it is also possible to "self-reference" the comb, endowing it with absolute frequency stability at a Hertz level. It is accordingly a very precise spectroscopic tool for measuring different frequencies of light and...
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