首页|Single-shot single-beam coherent Raman scattering thermometry based on optically induced air lasing

Single-shot single-beam coherent Raman scattering thermometry based on optically induced air lasing

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  • 国家科技期刊平台
  • NETL
  • NSTL
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Thermometric techniques with high accuracy,fast response and ease of implementation are desirable for the study of dynamic combustion environments,transient reacting flows,and non-equilibrium plasmas.Herein,single-shot single-beam coherent Raman scattering(SS-CRS)thermometry is developed,for the first time to our knowledge,by using air lasing as a probe.We show that the air-lasing-assisted CRS signal has a high signal-to-noise ratio enabling single-shot measurements at a 1 kHz repetition rate.The SS-CRS thermometry consistently exhibits precision of＜2.3％at different temperatures,but the inaccuracy grows with the increase in temperature.The high measurement repeatability,1 kHz acquisition rate and easy-to-implement single-beam scheme are achieved thanks to the unique temporal,spectral and spatial characteristics of air lasing.This work opens a novel avenue for high-speed CRS thermometry,holding tremendous potential for fast diagnostics of transient reacting flows and plasmas.

Xu Lu、Yewei Chen、Francesco Mazza、Siyi He、Zihan Li、Shunlin Huang、Quanjun Wang、Ning Zhang、Bo Shen、Yuzhu Wu、Jinping Yao、Ya Cheng

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State Key Laboratory of High Field Laser Physics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China

Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China

School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China

Faculty of Aerospace Engineering,Delft University of Technology,Kluyverweg 1,2629 HS Delft,The Netherlands

Institute of Modern Optics,Nankai University,Tianjin 300350,China

School of Microelectronics,Shanghai University,Shanghai 200444,China

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2024

10.1038/s41377-024-01598-9

光:科学与应用(英文版)
中国科学院长春光学精密机械与物理研究所

光:科学与应用(英文版)

CSTPCD
ISSN：2095-5545
年,卷(期)：2024.13(12)