Potential NASA Commercial Applications: Highly stable frequency references are needed for position, naviation, and timing applications (PNT). They have been used for exoplanet exploration, precision LADAR, and precision spectroscopy for Earth and planetary science. Frequency combs can be of interest to the NASA SCaN office to set up precise free-space timing networks for navigation, and improve data transmission rates. Free-space timing networks can be employed using NASA's Deep Space Atomic Clock (DSAC) for space craft navigation and to improve the GPS system, and for sensitive tests of General Relativity.
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