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Iodine Frequency Reference on a Sounding Rocket
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DOI：10.1103/PhysRevApplied.11.054068.png)
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Abstract
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We build a self-contained optical absolute frequency reference at 1064 nm based on the rovibronic transition R(56)32-0 in molecular iodine and operate this instrument in space on a sounding rocket mission. The frequency reference uses a microintegrated extended cavity diode laser and a quasimonolithic spectroscopy module for modulation transfer spectroscopy, providing frequency instability of 2 x 10(-13) for averaging times of 100 s. To demonstrate the autonomous operation of our reference, we perform an absolute frequency measurement using a chip-scale atomic clock and an optical frequency comb during a 6-min-long space fight.
Keywords:
LASER
NOISE
SPACE
SPECTROSCOPY
INSTABILITY
FEEDBACK
STANDARD
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