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New generation of combs

机译:新一代梳子

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摘要

To measure an optical frequency, you are best off using an optical frequency comb. A radical approach shakes up how these combs are produced, and will permit their closer integration into optical-fibre technology. Increasing the range over which frequencies can be accurately measured is an exertion driven both by applications (making sure that a mobile phone uses the right channel, for instance) and by fundamental physics: time and frequency are the most accurately measured physical quantities, and thus are often used in tests of theories such as relativity and quantum mechanics. Optical frequency combs — arrays of regularly spaced, well-defined reference frequencies — have revolutionized these endeavours. Optical atomic clocks using this form of benchmarking can be more precise than the very best clocks referenced to the current caesium atomic time standard, and combs are increasingly being used for sensitive and rapid detection of molecular processes. The growing importance of the technique was recognized by its appearance in the citation for the 2005 Nobel Prize in Physics.
机译:要测量光频率,最好使用光频率梳。彻底的方法改变了这些梳子的生产方式,并将使它们更紧密地集成到光纤技术中。应用程序(例如,确保移动电话使用正确的信道)和基本物理原理都促使人们努力提高频率的精确测量范围:时间和频率是最精确测量的物理量,因此通常用于相对论和量子力学等理论测试。光学频率梳-规则间隔的,定义明确的参考频率的阵列-彻底改变了这些努力。使用这种基准形式的光学原子钟可能比参考当前铯原子时间标准的最佳原子钟更为精确,并且梳子正越来越多地用于分子过程的灵敏和快速检测。该技术在2005年诺贝尔物理学奖的引用中得到认可,从而证明了该技术的重要性日益提高。

著录项

  • 来源
    《Nature》 |2007年第7173期|p.1175-1176|共2页
  • 作者

    Steven T. Cundiff;

  • 作者单位

    National Institute of Standards and Technology, University of Colorado, Boulder, Colorado 80309-0440, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自然科学总论;
  • 关键词

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