权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

COALESCe - COmpAct Light Engines for Strontium Clocks

COALESe - 用于锶钟的 COmpAct 光引擎

基本信息

批准号：
EP/M508287/1
负责人：
Jennifer Hastie
金额：
$ 1.95万
依托单位：
University of Strathclyde
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2015
资助国家：
英国
起止时间：
2015 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FM508287%2F1
关键词：
COALESCe COmpAct Light Engines Strontium

项目摘要

A large number of applications, including those in research, defence, and finance require compact optical clocks that retaintheir accuracy and reliability for lower costs and footprints than existing systems. Optical clocks are capable of betterstability and lower uncertainty than the current standard of time; however, each clock requires a range of lasers withdemanding requirements specific to the atomic species at the heart of the clock. Neutral strontium is one of the mostwidely used atoms. It has a key transition that must be addressed using a laser source with emission wavelength at 461nm,power >1W and linewidth (spectral purity) <32MHz. Currently researchers must use expensive or inadequate lasersources to meet these requirements. In this project we will meet all the above requirements of neutral strontium in a lowcost, compact system based on semiconductor disk laser (SDL) technology. The advantageous properties of SDLs fortunable, narrow linewidth operation have previously been demonstrated in the laboratory; however, their potential toaddress wavelengths of interest for optical clocks, and moreover to achieve this in a compact commercial format, have yetto be realised. We will engineer a stabilised, narrow linewidth 922nm SDL with frequency doubling to 461nm within thecost and volume parameters required for strontium optical clock-based systems to emerge from the research laboratoryand address applications in the field.

包括研究、国防和金融领域在内的大量应用都需要紧凑的光学时钟，以保持其准确性和可靠性，同时比现有系统的成本和占地面积更低。光学时钟具有比现行标准时间更好的稳定性和更低的不确定性；然而，每个时钟都需要一系列激光器，这些激光器对时钟核心的原子种类有严格的要求。中性锶是最广泛使用的原子之一。它有一个关键的过渡，必须使用发射波长为461nm，功率为bbb1w，线宽（光谱纯度）<32MHz的激光源来解决。目前，研究人员必须使用昂贵或不充分的激光源来满足这些要求。在本项目中，我们将在基于半导体磁盘激光器（SDL）技术的低成本紧凑型系统中满足中性锶的所有上述要求。sdl的优势特性——较窄的线宽操作——已经在实验室中得到了证明；然而，它们在处理光学时钟感兴趣的波长方面的潜力，以及在紧凑的商业格式中实现这一目标的潜力，尚未实现。我们将设计一个稳定的，窄线宽922nm的SDL，频率翻倍至461nm，在基于锶光时钟的系统所需的成本和体积参数范围内，从研究实验室出现，并解决该领域的应用。