Resonance enhanced two-photon spectroscopy of magnetically trapped atomic hydrogen

被引：3
|
作者：
Pinkse, PWH [1 ]
Mosk, A [1 ]
Weidemuller, M [1 ]
Reynolds, MW [1 ]
Hijmans, TW [1 ]
Walraven, JTM [1 ]
Zimmermann, C [1 ]
机构：
[1] UNIV MUNICH,SEKT PHYS,D-80799 MUNICH,GERMANY
来源：
PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 13期
关键词：
Absorption spectroscopy - Density measurement (optical) - Electron resonance - Electron transitions - Electronic density of states - Hydrogen - Molecular dynamics - Photons - Spectroscopy - Spectrum analysis - Transparency;
D O I：
10.1103/PhysRevLett.79.2423
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report on the first results with resonance enhanced two-photon spectroscopy of magnetically trapped atomic hydrogen, exciting the transition from the 1S ground state to the 3S or the 30 state. The spectroscopic method introduces tunable transparency to resonant optical studies of cold dense gases. It combines sensitivity (due to the near resonant 2P state) with high resolution (in principle limited only by the 3S state lifetime), making it a precision tool for optical investigation of ultracold H gas. To demonstrate its potential, the dynamic evolution of H gas during evaporative cooling is quantitatively investigated by analysis of two-photon absorption spectra.
引用
收藏
页码：2423 / 2426
页数：4
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