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Chinese Physics Letters

Dressed Four-Wave Mixing Spectroscopy Modified by Polarization Interference and Atom-Wall Collision in Micrometric Thin Cells

李院院, Li Li, Jintao Bai, 李昌彪, Zhang Peng, 侯洵

Published Jan 1, 2010• 0 citations
OpenAlex

Abstract

处理四波浪的混合(DFWM ) 光谱学在一些测微术的薄房间理论上被调查。DFWM 系列能被原子墙碰撞导致的原子和短暂效果的极化干扰修改，这被发现。这修正能导致 DFWM 缩小宽度排队并且便于在一个限制原子系统实现高分辨率 DFWM 光谱学的实验。

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We theoretically investigate dressed-four-wave mixing (dressed-FWM) spectroscopy of rubidium atoms in a micrometric thin vapour. It is found that Dike-narrowing type Autler–Townes (AT) spectroscopy with high resolution can be achieved in a reverse Y-type four-level atomic system due to the phase-conjugated configuration of laser beams and the transient effects of atom–wall collision in the thin vapour. We also show that controllable suppression and enhancement of the dressed-FWM signal due to the evolution of atomic coherence can be obtained by selecting different coupling field intensities at the proper detuning of the probe and the coupling fields. This control of FWM processes can be interpreted by dressed state analysis and probably used in the design of optical switch and the enhancement of FWM processes for frequency conversion.