Kerr - lens mode - locked femtosecond laser
نویسندگان
چکیده
We have measured the frequency of the 6s S1/2 − 5d D3/2 electricquadrupole transition of Yb with a relative uncertainty of 1 × 10, νY b = 688 358 979 309 312 Hz ± 6 Hz. A femtosecond frequency comb generator was used to phase-coherently link the optical frequency derived from a single trapped ion to a cesium fountain controlled hydrogen maser. This measurement is one of the most accurate measurements of optical frequencies ever reported, and it represents a contribution to the development of optical clocks based on an Yb ion standard.
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تاریخ انتشار 2001