Absolute and Relative Stability of an Optical Frequency Reference Based on Spectral Hole Burning in Eu3+:Y2SiO5

作者：Leibrandt David R^*; Thorpe Michael J; Chou Chin Wen; Fortier Tara M; Diddams Scott A; Rosenband Till

来源：Physical Review Letters, 2013, 111(23): 237402.

DOI：10.1103/PhysRevLett.111.237402

We present and analyze four frequency measurements designed to characterize the performance of an optical frequency reference based on spectral hole burning in Eu3+: Y2SiO5. The first frequency comparison, between a single unperturbed spectral hole and a hydrogen maser, demonstrates a fractional frequency drift rate of 5 X 10(-18) s(-1) . Optical frequency comparisons between a pattern of spectral holes, a Fabry- Perot cavity, and an Al+ optical atomic clock show a short-term fractional frequency stability of 1 X 10(-15) tau(-1/2) that averages down to 2: 5(-0.5)(+1.1) X 10(-16) at tau = 540 s (with linear frequency drift removed). Finally, spectral- hole patterns in two different Eu3+: Y2SiO5 crystals located in the same cryogenic vessel are compared, yielding a short- term stability of 7 X 10(-16) tau(-1/2) that averages down to 5.5(-0.9)(+1.8) X 10(-17)at tau = 204 s (with quadratic frequency drift removed).

• 出版日期2013-12-3