量子电子学报 ›› 2026, Vol. 43 ›› Issue (4): 612-622.doi: 10.3969/j.issn.1007-5461.2026.04.010

• 光谱 • 上一篇    下一篇

基于怀特池的多光程高精度痕量气体检测系统研究

陈 威 1,2, 徐 亮 2*, 徐睆垚 1,2, 花谷彪 1,2, 徐寒扬 2, 徐家求 3, 潘 帅 3   

  1. 1 中国科学技术大学, 安徽 合肥 230026; 2 中国科学院合肥物质科学研究院安徽光学精密机械研究所, 中国科学院环境光学与技术重点实验室,安徽 合肥 230031; 3 合肥中科红外精密仪器有限公司, 安徽 合肥 230022
  • 收稿日期:2023-10-07 修回日期:2023-11-01 出版日期:2026-07-28 发布日期:2026-07-27
  • 通讯作者: E-mail: xuliang@aiofm.ac.cn E-mail:E-mail: xuliang@aiofm.ac.cn
  • 作者简介:陈 威 ( 1997 - ), 安徽铜陵人, 研究生, 主要从事傅里叶变换红外光谱仪系统应用方面的研究。 E-mail: 1976288313@qq.com
  • 基金资助:
    国家自然科学基金 (52027804), 安徽省重点研究与开发计划 (2022m07020009), 中国科学院合肥研究院院长基金(YZJJ202209-TS)

Research on a multiple‐optical‐pathlength and high‐precision trace gas detection system based on White cell

CHEN Wei 1,2 , XU Liang 2* , XU Huanyao 1,2 , HUA Gubiao 1,2 , XU Hanyang2 , XU Jiaqiu3 , PAN Shuai 3   

  1. 1 University of Science and Technology of China, Hefei 230026, China; 2 Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; 3 Hefei Zhongke Infrared Precision Instrument Co., Ltd., Hefei 230022, China
  • Received:2023-10-07 Revised:2023-11-01 Published:2026-07-28 Online:2026-07-27
  • Supported by:

摘要: 针对传统傅里叶变换红外光谱系统存在光程固定和通用性差等问题, 本文通过在怀特池上采用双角镜反射光路设计, 搭建了一种新型多光程高精度痕量气体检测系统。系统怀特池大镜上可呈现6行光斑, 每行光斑的数量可从2到9自由调节, 从而实现了怀特池8种不同的反射光路, 并相应产生8种不同的吸收光程, 分别为48、72、96、120、144、168、192 和 216 m。基于该系统的初步实验研究表明, CO 和 N2O 的测量精度分别为 4.08 nmol/mol 和1.44 nmol/mol, 表明该系统能够实现高精度的气体浓度检测。

关键词: 光谱学, 多光程, 双角镜, 傅里叶变换红外光谱仪, 怀特池

Abstract: In response to the challenges of fixed optical path-length and limited flexibility in traditional Fourier transform infrared spectroscopy systems, a novel high-precision trace gas detection system with multiple optical pathlengths was developed in this work by utilizing a dual-corner mirror design within a White cell. The large mirror of the system can display six rows of light spots, with the number of spots in each row adjustable from 2 to 9. This flexibility enables the White cell to achieve eight different optical path reflections, resulting in eight distinct absorption path lengths of 48, 72, 96, 120, 144, 168, 192, and 216 m. Preliminary experimental research based on this system showed that, the measurement precision for CO and N2O was estimated to be 4.08 nmol/mol and 1.44 nmol/mol, respectively, demonstrating the system's capability of achieving high-precision gas concentration measurements.

Key words: spectroscopy, multiple optical pathlengths, dual-corner mirror, Fourier transform infrared spectrometer, White cell

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