Difference-frequency combs in cold atom physics
Difference-frequency combs in cold atom physics
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DOI：
10.1140/epjst/e2016-60092-0
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发表时间：
2016-05
期刊：
影响因子：
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通讯作者：
R. Kliese;N. Hoghooghi;T. Puppe;F. Rohde;A. Sell;A. Zach;P. Leisching;W. Kaenders;N. C. Keegan;A. Bounds;E. Bridge;J. Leonard;C. Adams;S. Cornish;Matthew P. A. Jones
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文献类型：
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作者：
R. Kliese;N. Hoghooghi;T. Puppe;F. Rohde;A. Sell;A. Zach;P. Leisching;W. Kaenders;N. C. Keegan;A. Bounds;E. Bridge;J. Leonard;C. Adams;S. Cornish;Matthew P. A. Jones
光学频率梳提供了将光学频率与无线电频率联系起来的时钟装置。因此，梳允许相对于射频测量光频率，其中精度仅受参考信号限制。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fceo和脉冲重复率frep。我们已经开发了第一个基于差频产生（DFG）的光学频率梳，消除了fceoby设计-专为冷原子物理学的应用而量身定制。在1550 nm处的Anfceo自由光谱是从跨越超过光学倍频程的超连续谱产生的。基于可靠的电信光纤技术的既定放大和频率转换技术允许产生多波长输出。DFG梳是一种方便的工具，既可以稳定激光源，又可以在里德堡实验和更广泛的量子光学中精确测量光学频率。本文讨论了锶里德堡态的频率梳设计、表征和光频测量。DFG技术允许一个紧凑和强大的，被动fceostable频率梳显着提高可靠性在实际应用中。
Optical frequency combs provide the clockwork to relate optical frequencies to radio frequencies. Hence, combs allow optical frequencies to be measured 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,fceo, and the pulse repetition-rate,frep. We have developed the first optical frequency comb based on difference frequency generation (DFG) that eliminatesfceoby design — specifically tailored for applications in cold atom physics. Anfceo-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 fibre technology allow the generation of multiple wavelength outputs. The DFG comb is a convenient tool to both stabilise laser sources and accurately measure optical frequencies in Rydberg experiments and more generally in quantum optics. In this paper we discuss the frequency comb design, characterization, and optical frequency measurement of Strontium Rydberg states. The DFG technique allows for a compact and robust, passivelyfceostable frequency comb significantly improving reliability in practical applications.