期刊
OPTICS LETTERS
卷 43, 期 12, 页码 2961-2964出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.43.002961
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资金
- Air Force Research Laboratory (AFRL) [FA8650-15-D-2518, 88ABW-2018-1094]
- National Science Foundation (NSF) [CTS-1645544]
- Air Force Office of Scientific Research (AFOSR) [14RQ06COR, 15RQCOR202]
- Directorate For Engineering [1645544] Funding Source: National Science Foundation
Single-shot, two-color, volumetric laser-induced fluorescence was demonstrated for three-dimensional (3D), tomographic imaging of the structural properties of the OH radical and temperature field in a turbulent hydrogen- air flame. Two narrowband laser sources were tuned to the Q(1)(5) and Q(1)(14) transitions of the (1,0) band in the A(2)Sigma <- X-2 Pi system and illuminated a volumetric region of the flame. Images from eight unique perspectives collected simultaneously from each of the two transitions were used to reconstruct overlapping OH fields with different Boltzmann fractions and map the 3D temperature distribution with nanosecond precision. Key strategies for minimizing sources of error, such as detector sensitivity and spatial overlap of the two fields, are discussed. (C) 2018 Optical Society of America
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