Study on the extinction coefficeient of graphite smoke to 10.6 microns laser emission

Xuanyu Wang; Gongpei Pan

doi:10.1117/12.667345

29 December 2005 Study on the extinction coefficeient of graphite smoke to 10.6 microns laser emission

Xuanyu Wang, Gongpei Pan

Proceedings Volume 6028, ICO20: Lasers and Laser Technologies; 60282C (2005) https://doi.org/10.1117/12.667345
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

The transmitting properties of 10.6μm laser emission and the infrared screening performances of graphite smoke are elaborated. The experimental method and steps are detailedly expounded to test the extinction coefficient of graphite smoke to laser emission in a smoke chamber. The test results are listed with a comparison to other smokes. The curves of laser power varied with time in graphite smoke are drawn and the average particle's diameter of graphite smoke is tested. The extinction efficiency factors of a single particle of graphite smoke are calculated according to Mie theory. By the experimental result, the mass extinction coefficient of graphite smoke to 1.032W 10.6μm laser emission is 1.28m²/g and much bigger than other smokes'. By the analysis, the extinction efficiency factor of graphite smoke's particles to 10.6μm laser emission is decided by scattering efficiency factor when the diameter is bigger than 3μm and the optimal scattering diameter is 9.0μm. The graphite smoke has a better extinction ability to ordinary infrared than 10.6μm laser emission.

Citation Download Citation

Xuanyu Wang and Gongpei Pan "Study on the extinction coefficeient of graphite smoke to 10.6 microns laser emission", Proc. SPIE 6028, ICO20: Lasers and Laser Technologies, 60282C (29 December 2005); https://doi.org/10.1117/12.667345

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