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arXiv physics/0010024physics.atom-ph
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双光子跃迁氢原子的连续波多普勒冷却

Continuous-wave Doppler-cooling of hydrogen atoms with two-photon transitions

Véronique Zehnlé, Jean Claude Garreau

摘要:

提出并分析了利用1 S-2S跃迁对氢原子进行双光子连续波多普勒冷却的可能性。2S能级的“淬灭”(通过与2 P态耦合)用于增加循环频率,并控制平衡温度。由于多普勒自由双光子跃迁的加热效应的理论和数值研究证据的温度增加了两个因素。平衡温度随着激发态的有效宽度(取决于猝灭)而降低,因此可以调节到接近反冲温度的值。

英文摘要:

We propose and analyze the possibility of performing two-photon continuous-wave Doppler-cooling of hydrogen atoms using the 1S-2S transition. "Quenching" of the 2S level (by coupling with the 2P state) is used to increase the cycling frequency, and to control the equilibrium temperature. Theoretical and numerical studies of the heating effect due to Doppler-free two-photon transitions evidence an increase of the temperature by a factor of two. The equilibrium temperature decreases with the effective (quenching dependent) width of the excited state and can thus be adjusted up to values close to the recoil temperature.

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