| 光频标和光频测量研究的历史、现状和未来 |
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| 引用本文： | 沈乃澂,魏志义,聂玉昕.光频标和光频测量研究的历史、现状和未来[J].量子电子学报,2004,21(2):139-148. |
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| 作者姓名： | 沈乃澂 魏志义 聂玉昕 |
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| 作者单位： | 中国科学院物理研究所,计量测试高技术联合实验室,北京,100080 |
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| 基金项目： | 中国科学院院长基金资助项目 |
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| 摘 要： | 本文综合评述了光频标和光频测量研究的历史、现状和未来。在上世纪最后的30年间，光频标已达到10^-11-10^-13量级的准确度，使长度单位“米”进行了重新定义，实际上成为时间单位秒的“导出单位”。最近三年来，该领域的研究出现了重大突破。这是由于飞秒锁模激光技术与光频测量技术两者出人意外的结合，使微波频标与光频标之间建立了简易可行的联系，使光频标的准确度和实用性达到了前所未有的高度，成为计量学和物理学中一个新的亮点。它的进一步发展必将给计量学和物理学带来深远的影响。
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| 关 键 词： | 光频标 光频测量 飞秒锁模激光 微波频标 |
| 文章编号： | 1007-5461(2004)02-0139-10 |
| 收稿时间： | 2004/2/11 |
| 修稿时间： | 2004年2月11日 |
History,present situation and future of optical frequency standard and optical frequency measurements |
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| SHEN Nai-cheng,WEI Zhi-yi,NIE Yu-xin.History,present situation and future of optical frequency standard and optical frequency measurements[J].Chinese Journal of Quantum Electronics,2004,21(2):139-148. |
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| Authors: | SHEN Nai-cheng WEI Zhi-yi NIE Yu-xin |
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| Abstract: | The history, present situation and future of optical frequency standards and optical frequency measurements were presented. The uncertainty of optical frequency standards has come up to 10-11 ~ 10-14. In this way, length unit 'meter' became the derived unit of time unit 'second'. Recently, there was a great breakthrough in this field. The unexpected link of femtosecond mode-locked laser and optical frequency measurement technology make a simple relation between microwave standards and optical frequency standards. Frequency measurements get easier and more accurate because of this relation. This is a new brilliancy in metrology and physics. |
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| Keywords: | optical frequency standard optical friquency measurement femtosecond mode-locked lasers |
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