United time-frequency spectroscopy for dynamics and global structure

被引:241
作者
Marian, A
Stowe, MC
Lawall, JR
Felinto, D
Ye, J [1 ]
机构
[1] Natl Inst Stand & Technol, Joint Inst Lab Astrophys, Boulder, CO 80309 USA
[2] Univ Colorado, Dept Phys, Boulder, CO 80309 USA
[3] NIST, Atom Phys Div, Gaithersburg, MD 20899 USA
关键词
D O I
10.1126/science.1105660
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Ultrashort laser pulses have thus far been used in two distinct modes. In the time domain, the pulses have allowed probing and manipulation of dynamics on a subpicosecond time scale. More recently, phase stabilization has produced optical frequency combs with absolute frequency reference across a broad bandwidth. Here we combine these two applications in a spectroscopic study of rubidium atoms. A wide-bandwidth, phase-stabilized femto-second laser is used to monitor the real-time dynamic evolution of population transfer. Coherent pulse accumulation and quantum interference effects are observed and well modeled by theory. At the same time, the narrow line-width of individual comb lines permits a precise and efficient determination of the global energy-level structure, providing a direct connection among the optical, terahertz, and radio-frequency domains. The mechanical action of the optical frequency comb on the atomic sample is explored and controlled, leading to precision spectroscopy with an appreciable reduction in systematic errors.
引用
收藏
页码:2063 / 2068
页数:6
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