Lifetime measurement of the cesium 6P3/2 state using ultrafast laser-pulse excitation and ionization

被引：18

作者：

Sell, J. F. ^{[1
]}

Patterson, B. M. ^{[1
]}

Ehrenreich, T. ^{[1
]}

Brooke, G. ^{[1
]}

Scoville, J. ^{[1
]}

Knize, R. J. ^{[1
]}

机构：

[1] USAF Acad, Laser & Opt Res Ctr, Dept Phys, Colorado Springs, CO 80840 USA

来源：

PHYSICAL REVIEW A | 2011年 / 84卷 / 01期

基金：

美国国家科学基金会;

关键词：

BEAM-LASER;

D O I：

10.1103/PhysRevA.84.010501

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report a precision measurement of the cesium 6P(3/2) excited-state lifetime. Two collimated, counterpropagating thermal Cs beams cross perpendicularly to femtosecond pulsed laser beams. High timing accuracy is achieved from having excitation and ionization laser pulses which originate from the same mode-locked laser. Using pulse selection we vary the separation in time between excitation and ionization laser pulses while counting the ions produced. We obtain a Cs 6P(3/2) lifetime of 30.460(38) ns, which is a factor of two improvement from previous measurements and with an uncertainty of 0.12%, is one of the most accurate lifetime measurements on record.

引用

页数：4

共 21 条

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