[time-nuts] Space-borne frequency comb metrology

Brooke Clarke brooke at pacific.net
Mon Nov 28 16:56:07 EST 2016


Free on line pdf at:

"Precision time references in space are of major importance to satellite-based fundamental science, global satellite 
navigation, earth observation, and satellite formation flying. Here we report on the operation of a compact, rugged, and 
automated optical frequency comb setup on a sounding rocket in space under microgravity. The experiment compared two 
clocks, one based on the optical D2transition in Rb, and another on hyperfine splitting in Cs. This represents the first 
frequency comb based optical clock operation in space, which is an important milestone for future satellite-based 
precision metrology. Based on the approach demonstrated here, future space-based precision metrology can be improved by 
orders of magnitude when referencing to state-of-the-art optical clock transitions."

Have Fun,

Brooke Clarke
The lesser of evils is still evil.

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