High-speed measurement of an air transect’s temperature shift heated by laser beam

WenYu Li; ZongFu Jiang; Fengjie Xi; Qiang Li; Wenke Xie

doi:10.1117/12.571619

10 February 2005 High-speed measurement of an air transect's temperature shift heated by laser beam

WenYu Li, ZongFu Jiang, Fengjie Xi, Qiang Li, Wenke Xie

Proceedings Volume 5638, Optical Design and Testing II; (2005) https://doi.org/10.1117/12.571619
Event: Photonics Asia, 2004, Beijing, China

Abstract

Laser beam heat the air on the optic path, Beam-deflection optical tomography is a non-intrusive method to measure the 2-dimension temperature distribution in the transect. By means of linear Hartmann Sensor at the rate of 27kHz, the optic path was heated by a 2.7μm HF laser, continuous and high time resolution gradients of optic phase were obtained. the result of analysing and calculation showed the temperament shift in the heated beam path was not higher than 50K when the HF laser power was 9W. The experiment showed that it is a practical non-intrusive temperature shift measurement method for a small area aero-optical medium.

Citation Download Citation

WenYu Li, ZongFu Jiang, Fengjie Xi, Qiang Li, and Wenke Xie "High-speed measurement of an air transect's temperature shift heated by laser beam", Proc. SPIE 5638, Optical Design and Testing II, (10 February 2005); https://doi.org/10.1117/12.571619

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