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.
参考文献
| [1] | Shi Changyan (Ed.).An Introduction to Modern Metrology (现代计量学概论) [M].(Chp.7 "Base unit of measurement" by Shen Naicheng) China Metrology Press.2003.(in Chinese). |
| [2] | Evenson K M,Wells J S,et al.Accurate frequency of molecular transitions used in laser stabilization:the 3.39 mm transition in CH4 and the 9.33 and 10.18 μm transiton in CO2 [J].Appl.Phys.Lett.,1973,22:192. |
| [3] | Jennings D A,Pollock C R,Peterson K R,et al.Direct frequency measurement of the I2-stabilized He-Ne 473 THz (633 nm) laser [J].Opt.Lett.,1984,8:136. |
| [4] | Quinn T J.Documents concerning the new definition of the metre [J].Metrologia,1984,19:163. |
| [5] | Quinn T J.Practical realization of the definition of the metre (1997)[J].Metrologia,1990,36:211. |
| [6] | BIPM [R],Report,2001. |
| [7] | Hansch T W.High resolution spectroscopy of hytrogen.in The Hydrogen Atom [M].eds.Bassani G F.Inguscio M,Hansch T W.Heideberg:Springer,1989. |
| [8] | Udem T,Reichert J,Holzwarth R,et al.Accurate measurement of large optical frequency differences with a mode-locked laser [J].Opt.Lett.,1999,24:881-883. |
| [9] | Jones D J,Diddams S A,Ranka J K,et al.Carrier-envelope phase control of femtosecond mode-locked lasers and direct optical frequency synthesis [J].Science,2000,288:635-639. |
| [10] | Diddams S A,Jones D J,Ma L,etal.Optical frequency measurement across a 104 THz gap with a femtosecond laser frequency comb [J].Opt.Lett.,2000,25:186. |
| [11] | Reichert J,Niering M,Holzwarth R,et al.Phase coherent vacuum-ultraviolet to radio frequency comparison with a mode-locked laser [J].Phys.Rev.Lett.,2000,84:3232. |
| [12] | Cundiff S T,Ye J,Hall J L.Optical frequency synthesis based on mode-locked lasers [J].Rev.Sci.Instrum.,2001,72,1-23. |
| [13] | Diddams S A,Udem T,Vogel K R,et al.A compact femtosecond-laser-based optical clock [C] ∥ Proc.SPIE,2001,4269:77. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%