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Fluorescence Spectroscopy of Rb Atoms with Two-Color Optical Near Fields for a High-Resolution Slit-Type Detector

机译:高分辨率狭缝型检测器的双色光学近场Rb原子荧光光谱。

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摘要

We introduce stepwise resonant excitation by two-color optical near fields in order to detect Rb atoms with a slit-type detector. Blue fluorescence of the second D_2 line is monitored for background-free detection. Feasibility of the method is shown from an experiment with a Rb vapor cell, where a sub-Doppler spectrum with the FWHM of 80 MHz is obtained. The detection efficiency is estimated at about 3% for cold Rb atoms.
机译:为了通过狭缝式检测器检测Rb原子,我们引入了由两色光学近场引起的逐步共振激发。监测第二条D_2线的蓝色荧光,进行无背景检测。该方法的可行性从Rb蒸汽电池的实验中得到了证明,其中获得了FWHM为80 MHz的亚多普勒频谱。冷Rb原子的检测效率估计约为3%。

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