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

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

doi:10.1038/s41377-024-01598-9

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

Light Sci Appl. 2024 Nov 25;13(1):315. doi: 10.1038/s41377-024-01598-9.

Authors

Xu Lu^{1

2}, Yewei Chen^{1

3}, Francesco Mazza⁴, Siyi He^{1

2}, Zihan Li^{1

3}, Shunlin Huang¹, Quanjun Wang¹, Ning Zhang^{1

2}, Bo Shen^{1

5}, Yuzhu Wu^{1

6}, Jinping Yao⁷, Ya Cheng¹

Affiliations

¹ State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, China.
² Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China.
³ School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China.
⁴ Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2629 HS, Delft, The Netherlands.
⁵ Institute of Modern Optics, Nankai University, Tianjin, 300350, China.
⁶ School of Microelectronics, Shanghai University, Shanghai, 200444, China.
⁷ State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, China. [email protected].

Abstract

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.

Abstract

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