首页|期刊导航|计量学报|金刚石氮-空位色心温度测量的激发激光稳定闭环控制方法

金刚石氮-空位色心温度测量的激发激光稳定闭环控制方法

WU Feixiang XING Li FENG Xiaojuan ZHANG Jintao SUN Jian

计量学报2025，Vol.46Issue(11)：1561-1567,7.

计量学报2025，Vol.46Issue(11)：1561-1567,7.DOI:10.3969/j.issn.1000-1158.2025.11.02

金刚石氮-空位色心温度测量的激发激光稳定闭环控制方法

Closed-loop Stabilization Method for Excitation Laser in Temperature Measurement Based on Nitrogen-vacancy Centers in Diamond

WU Feixiang ¹XING Li ²FENG Xiaojuan ²ZHANG Jintao ²SUN Jian³

作者信息

1. College of Mechanical and Electrical Engineering,China Jiliang University,Hangzhou,Zhejiang 310018,China||Division of Thermophysics,National Institute of Metrology,Beijing 100029,China
2. Division of Thermophysics,National Institute of Metrology,Beijing 100029,China
3. College of Mechanical and Electrical Engineering,China Jiliang University,Hangzhou,Zhejiang 310018,China
折叠

摘要

Abstract

Thermometry based on nitrogen-vacancy(NV)centers in diamond is an emerging quantum temperature sensing technique characterized by ultra-high sensitivity and stable physico-chemical properties.This method primarily measures temperature through the zero-field splitting of the ground state energy levels.It is applicable for temperature monitoring in various fields,including chip technology and biological systems.Typically,this technique involves exciting the electron spins of NV centers using a laser,applying microwaves for manipulation,and subsequently acquiring the optically detected magnetic resonance(ODMR)spectra of the NV centers.However,during ODMR spectral measurements,fluctuations in laser power result in variations in the fluorescence photon count.To fundamentally suppress laser power fluctuations,a closed-loop stabilization control module for the excitation laser was developed based on a liquid crystal variable retarder(LCVR),making it applicable for diamond NV center sensors.A long-term stability test was conducted,and after closed-loop control,the laser power stability was suppressed by a factor of 5.6 compared to the original optical power.Finally,the set voltage of the liquid crystal phase retarder was optimized,and ODMR experiments were conducted at room temperature for comparison.After enabling closed-loop control,the standard deviation of the zero-field splitting energy D value measurement decreased from 204.02 kHz to 47.03 kHz,demonstrating an improvement in the stability of fluorescence intensity and ODMR spectral measurements.

关键词

温度计量/金刚石氮-空位色心/激光闭环控制/液晶相位延迟器/光探测磁共振

Key words

temperature measurement/NV centers in diamond/laser closed-loop control/LCVR/ODMR

分类

通用工业技术

引用本文复制引用

WU Feixiang,XING Li,FENG Xiaojuan,ZHANG Jintao,SUN Jian..金刚石氮-空位色心温度测量的激发激光稳定闭环控制方法[J].计量学报,2025,46(11):1561-1567,7.

基金项目

中国计量科学研究院重点领域基本科研业务费项目(AKYZD2209-1) （AKYZD2209-1）

中国计量科学研究院基本科研业务费探索性创新项目(AKYCX2401) （AKYCX2401）

计量学报

OA北大核心

ISSN：1000-1158

访问量0

下载量0

段落导航