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Applications of Frequency Combs over the Air in Timing and Spectroscopy
October 23, 2018 @ 11:30 am - 1:00 pm
Optical frequency combs bring new capabilities in precision laser measurements. At its simplest level, a frequency comb provides an optical spectrum comprised of a series of equally-spaced spectral lines at precisely known optical frequencies, and is often referred to as an “optical frequency ruler”. While their initial application was to optical metrology and specifically to support optical clocks, frequency combs are being applied to a growing number of applications. I will briefly discuss frequency combs before describing two applications that our group is currently pursuing. The first is a comb-based technique for time-frequency transfer over free space that should enable future optical clock networks with femtosecond levels of relative timing precision. The second is dual-comb spectroscopy that can allow for the precise and accurate sensing of atmospheric gases, including greenhouse gases, over long open- air paths.
Speaker(s): Dr. Nathan Newbury,
Bldg: CCRF Building 2
7220 Richardson Rd