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Direct RF to optical frequency measurements with a femtosecond laser comb

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7 Author(s)
Diddams, S.A. ; Joint Inst. for Lab. Astrophys., Colorado Univ., Boulder, CO, USA ; Jones, D.J. ; Ye, J. ; Cundiff, S.T.
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By spanning an optical octave (>300 THz) with a broadened femtosecond laser frequency comb, we directly measure the frequencies of optical standards at 1064/532 nm, 633 nm and 778 nm in terms of the microwave frequency that controls the comb spacing. This microwave frequency can be linked directly to the cesium standard

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Instrumentation and Measurement, IEEE Transactions on  (Volume:50 ,  Issue: 2 )