Determination of the atomic density of rubidium-87

doi:10.1088/1674-1056/24/9/094206

Abstract Atomic density is a basic and important parameter in quantum optics, nonlinear optics, and precision measurement. In the past few decades, several methods have been used to measure atomic density, such as thermionic effect, optical absorption, and resonance fluorescence. The main error of these experiments stemmed from depopulation of the energy level, self-absorption, and the broad bandwidth of the laser. Here we demonstrate the atomic density of ⁸⁷Rb vapor in paraffin coated cell between 297 K and 334 K mainly using fluorescence measurement. Optical pumping, anti-relaxation coating, and absorption compensation approaches are used to decrease measurement error. These measurement methods are suitable for vapor temperature at dozens of degrees. The fitting function for the experimental data of ⁸⁷Rb atomic density is given.

Keywords: atomic density ⁸⁷Rb vapor fluorescence absorption compensation

Received: 12 February 2015
Revised: 15 April 2015
Accepted manuscript online:

PACS:	42.50.Gy	(Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)
	42.30.Kq	(Fourier optics)

Fund: Project supported by the Natural Science Foundation of China (Grant Nos. 11274118 and 11474095), the Innovation Program of Shanghai Municipal Education Commission of China (Grant No. 13ZZ036), and the Fundamental Research Funds for the Central Universities of China.

Corresponding Authors: Chen Li-Qing
E-mail: lqchen@phy.ecnu.edu.cn

Cite this article:

Zhao Meng (赵盟), Zhang Kai (张凯), Chen Li-Qing (陈丽清) Determination of the atomic density of rubidium-87 2015 Chin. Phys. B 24 094206

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Determination of the atomic density of rubidium-87

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