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arXiv 1605.02426physics.atom-phphysics.optics
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冷原子物理中的差频梳

Difference-frequency combs in cold atom physics

Russell Kliese, Nazanin Hoghooghi, Thomas Puppe, Felix Rohde, Alexander Sell, Armin Zach, Patrick Leisching, Wilhelm Kaenders, Niamh C. Keegan, Alistair D. Boun… 展开作者

Russell Kliese, Nazanin Hoghooghi, Thomas Puppe, Felix Rohde, Alexander Sell, Armin Zach, Patrick Leisching, Wilhelm Kaenders, Niamh C. Keegan, Alistair D. Bounds, Elizabeth M. Bridge, Jack Leonard, Charles S. Adams, Simon L. Cornish, Matthew P. A. Jones

摘要:

光学频率梳提供了将光学频率与射频联系起来的时钟机制。因此,梳允许测量相对于射频的光频率,其中精度仅受参考信号的限制。为了在无线电频率和光学频率之间提供稳定的链路,频率梳的两个参数必须是固定的:载波包络偏移频率$f_{\rm ceo}$和脉冲重复率$f_{\rm rep}$。我们开发了第一个基于差频产生(DFG)的光学频率梳,通过设计消除了$f_{\rm ceo}$-专为冷原子物理学中的应用而量身定制。在1550 nm处的无$f_{\rm ceo}$光谱由跨越超过光学倍频程的超连续谱产生。基于可靠的电信光纤技术建立的放大和频率转换技术允许产生多波长输出。在本文中,我们讨论了频率梳的设计,表征和光学频率测量的Sr里德堡态。DFG技术允许紧凑和鲁棒的、被动$f_{\rm ceo}$稳定的频率梳,显著提高了实际应用中的可靠性。

英文摘要:

Optical frequency combs provide the clockwork to relate optical frequencies to radio frequencies. Hence, combs allow to measure optical frequencies with respect to a radio frequency where the accuracy is limited only by the reference signal. In order to provide a stable link between the radio and optical frequencies, the two parameters of the frequency comb must be fixed: the carrier envelope offset frequency $f_{\rm ceo}$ and the pulse repetition-rate $f_{\rm rep}$. We have developed the first optical frequency comb based on difference frequency generation (DFG) that eliminates $f_{\rm ceo}$ by design - specifically tailored for applications in cold atom physics. An $f_{\rm ceo}$-free spectrum at 1550 nm is generated from a super continuum spanning more than an optical octave. Established amplification and frequency conversion techniques based on reliable telecom fiber technology allow generation of multiple wavelength outputs. In this paper we discuss the frequency comb design, characterization, and optical frequency measurement of Sr Rydberg states. The DFG technique allows for a compact and robust, passively $f_{\rm ceo}$ stable frequency comb significantly improving reliability in practical applications.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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