Frequency Stabilized Laser for use in Microwave Generation
Department of Defense
Defense Advanced Research Projects Agency
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Boulder Precision E-O
5733 central ave, Boulder, CO, -
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AbstractWe construct a frequency stabilized laser which will generate 10 GHz microwaves with Phase noise -100 dBC/Hz at 1 Hz, or equivalently, an optical frequency with an Allan Deviation of 8e-16 and a drift rate of<1 Hz/s. This is achieved with a silicon reference cavity (for short-term stability) which is disciplined at long times with a lock to a saturated absorption feature in an acetylene line. The molecular reference will discipline the drift of the locked laser to give the required phase noise at 1 Hz in a wide range of environments.
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