Single-branch Er:fiber frequency comb for precision optical metrology with 10-18 fractional instability

被引：79
作者：
Leopardi, Holly [1 ,2 ]
Davila-Rodriguez, Josue [2 ]
Quinlan, Franklyn [2 ]
Olson, Judith [1 ,2 ]
Sherman, Jeff A. [2 ]
Diddams, Scott A. [1 ,2 ]
Fortier, Tara M. [1 ,2 ]
机构：
[1] Univ Colorado, Dept Phys, 440 UCB, Boulder, CO 80309 USA
[2] NIST, Time & Frequency Div, Boulder, CO 80305 USA
来源：
OPTICA | 2017年 / 4卷 / 08期
关键词：
LATTICE CLOCK; NOISE; FIBER; LEVEL; GENERATION; STABILITY; PHASE; ION; SPECTROSCOPY; UNCERTAINTY;
D O I：
10.1364/OPTICA.4.000879
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The comparison of optical atomic clocks with frequency instabilities reaching 1 part in 10(16) at 1 s will enable more stringent tests of fundamental physics. These comparisons, mediated by optical frequency combs, require optical synthesis and measurement with a performance better than, or comparable to, the best optical clocks. Fiber-based mode-locked lasers have shown great potential for compact, robust, and efficient optical clockwork but typically require multiple amplifier and fiber optic paths that limit the achievable fractional frequency stability near 1 part in 10(16) at 1 s. Here we describe an erbium-fiber laser frequency comb that overcomes these conventional challenges by ensuring that all critical fiber paths are common mode and within the servo-controlled feedback loop. Using this architecture, we demonstrate a fractional optical measurement uncertainty below 1 x 10(-19) and fractional frequency instabilities less than 3 x 10(-18) at 1 s and 1 x 10(-19) at 1000 s. (C) 2017 Optical Society of America
引用
收藏
页码：879 / 885
页数：7
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