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Effects of temperature on laser diode ignition |
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| Authors: | Shi-Biao Xiang Xu Xiang |
| Institution: | a Department of Technical Physics, Zhengzhou Institute of Light Industry, No. 5 Dongfeng Road, Zhengzhou 450002, PR China b Key Laboratory of Informationalized Electric Apparatus of Henan Province, Zhengzhou 450002, PR China c State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, P.O. Box 98, Beijing 100029, PR China d School of Mechanics and Engineering, Beijing Institute of Technology, Beijing 100081, PR China |
| Abstract: | In this paper, the effects of temperature on laser diode ignition and the resulting consequences were discussed in detail through theoretical analysis, experiments and numerical calculations. The results indicated that the output power of laser diode decreases and the wavelength of laser redshifts with elevated working temperature under a certain condition. The threshold conditions of ignition for powders are easily satisfied with increase in ambient temperature. While the temperature reaches a high enough level, ignition can occur and also the self-combustion or thermal induced explosion can do, even if laser power is very low. Therefore, it is of great importance to carefully control the working temperature of laser diode and the ambient temperature of powder system, and in the meanwhile, to install necessary insurance apparatus in order to ensure the normal and safe operation of the ignition system. |
| Keywords: | Laser diode Ignition Temperature Threshold |
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