Cesium atomic Doppler broadening thermometry for room temperature measurement  

作　　者：Yijie Pan Wenhan Liao He Wang Yan Yao Jinhui Cai Jifeng Qu 潘奕捷;廖文汉;王贺;姚燕;蔡晋辉;屈继峰(Center for Advanced Measurement Science,National Institute of Metrology,Beijing 100029,China;College of Metrology & Measurement Engineering,China Jiliang University,Hangzhou 310018,China;School of Optoelectronics,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]Center for Advanced Measurement Science,National Institute of Metrology,Beijing 100029,China [2]College of Metrology & Measurement Engineering,China Jiliang University,Hangzhou 310018,China [3]School of Optoelectronics,Beijing Institute of Technology,Beijing 100081,China

出　　处：《Chinese Optics Letters》2019年第6期1-4,共4页中国光学快报（英文版）

基　　金：supported by the National Key R&D Program of China(No.2017YFF0206102)

摘　　要：Atomic Doppler broadening thermometry（DBT） is potentially an accurate and practical approach for thermodynamic temperature measurement. However, previous reported atomic DBT had a long acquisition time and had only been proved at the triple point of water, 0°C, for the purpose of determination of the Boltzmann constant. This research implemented the cesium atomic DBT for fast room temperature measurement. The Cs133 D1(6 S1/2→ 6 p1/2 transition) line was measured by direct laser absorption spectroscopy, and the quantity of thermal-induced linewidth broadening was precisely retrieved by the Voigt profile fitting algorithm. The preliminary results showed the proposed approach had a 4 min single-scan acquisition time and 0.2% reproducibility. It is expected that the atomic DBT could be used as an accurate, chip-scale, and calibration-free temperature sensor and standard.Atomic Doppler broadening thermometry(DBT)is potentially an accurate and practical approach for thermodynamic temperature measurement.However,previous reported atomic DBT had a long acquisition time and had only been proved at the triple point of water,0℃,for the purpose of determination of the Boltzmann constant.This research implemented the cesium atomic DBT for fast room temperature measurement.The Cs^133 D1(6S^1/2→6p^1/2 transition)line was measured by direct laser absorption spectroscopy,and the quantity of thermal-induced linewidth broadening was precisely retrieved by the Voigt profile fitting algorithm.The preliminary results showed the proposed approach had a 4 min single-scan acquisition time and 0.2%reproducibility.It is expected that the atomic DBT could be used as an accurate,chip-scale,and calibration-free temperature sensor and standard.

关 键 词：ATOMIC DOPPLER BROADENING potentially an ACCURATE SENSOR and standard 

分 类 号：O3[理学—力学]