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首页> 外文期刊>Optics Letters >Femtosecond-laser-based optical clockwork with instability ≤6.3×10~(-16) in 1 s
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Femtosecond-laser-based optical clockwork with instability ≤6.3×10~(-16) in 1 s

机译:飞秒激光光学钟表,在1 s内不稳定性≤6.3×10〜(-16)

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摘要

Two octave-spanning optical-frequency combs (750-MHz comb spacing) are phase locked to a common continuous-wave laser diode. The measured instability of the heterodyne beat between the two combs demonstrates that the intrinsic fractional frequency noise of a comb is ≤6.3×10~(-16) in 1 s of averaging across the ~300-THz bandwidth. Furthermore, the average frequencies of the elements of the two combs are found to agree within an uncertainty of 4×10~(-17) across the entire octave. We demonstrate the possibility of transfering the stability and accuracy of the best current optical standards to ~500,000 individual oscillators across the visible and near-infrared spectrum.
机译:两个跨度为八度的光频率梳(梳齿间距为750 MHz)被锁相到一个普通的连续波激光二极管。测得的两个梳齿之间的外差拍不稳定性表明,梳齿的固有分数频率噪声在〜300-THz带宽内平均1 s≤6.3×10〜(-16)。此外,发现在整个八度音程中,两个梳齿的平均频率在4×10〜(-17)的不确定度内一致。我们证明了在可见光和近红外光谱范围内将最佳当前光学标准的稳定性和准确性转移到约500,000个单独振荡器的可能性。

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