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Science. 2000 Apr 28;288(5466):635-40.

Carrier-envelope phase control of femtosecond mode-locked lasers and direct optical frequency synthesis

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JILA, University of Colorado and National Institute of Standards and Technology, Boulder, CO 80309-0440, USA. Bell Laboratories, Lucent Technologies, Murray Hill, NJ 07733, USA.


We stabilized the carrier-envelope phase of the pulses emitted by a femtosecond mode-locked laser by using the powerful tools of frequency-domain laser stabilization. We confirmed control of the pulse-to-pulse carrier-envelope phase using temporal cross correlation. This phase stabilization locks the absolute frequencies emitted by the laser, which we used to perform absolute optical frequency measurements that were directly referenced to a stable microwave clock.

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