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Proceedings Paper

Laser-induced temperature-rise measurement by infrared imaging
Author(s): Jianhui Gu; Siu Chung Tam; Yee Loy Lam; Qiguang Zheng; Xueqin Wei
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Paper Abstract

The characteristics of laser-induced temperature-rise are important information in laser material processing. In our experiment, several kinds of metals such as mild carbon steel, stainless steel, aluminum alloy and copper, and non-metals namely epoxy and polymethyl methacrylate were irradiated by using a high-power CW CO2 laser beam, while the temperature distribution and variation on their surfaces were measured by using a fast scanning infrared camera to image the laser irradiated area. The CO2 laser beam power was varied from several tens of Watts to several hundreds of Watts for the irradiating of different materials. 2-D and 3-D temperature distributions and the temperature variations against the time of laser irradiation on certain points within the laser-irradiated area were recorded and measured. It is found that the temperature distribution on the surfaces of the irradiated materials was tightly related to the laser beam mode, and the temperature fluctuations corresponded to the laser beam power fluctuations. The results of this research could be applied to laser material processing.

Paper Details

Date Published: 7 June 2000
PDF: 8 pages
Proc. SPIE 3933, Laser Applications in Microelectronic and Optoelectronic Manufacturing V, (7 June 2000); doi: 10.1117/12.387546
Show Author Affiliations
Jianhui Gu, Nanyang Technological Univ. (Singapore)
Siu Chung Tam, Nanyang Technological Univ. (Singapore)
Yee Loy Lam, Nanyang Technological Univ. (Singapore)
Qiguang Zheng, Huazhong Univ. of Science and Technology (China)
Xueqin Wei, Huazhong Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 3933:
Laser Applications in Microelectronic and Optoelectronic Manufacturing V
Henry Helvajian; Koji Sugioka; Malcolm C. Gower; Jan J. Dubowski, Editor(s)

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