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Attenuation characteristics of Gaussian beams passing through a granular system
Received date: 2016-06-06
Online published: 2018-06-27
Vacuum deposition is an essential coating process to form organic light-emitting diode (OLED) film luminescent layers. Vapor of organic polymers is treated as a spherical particle systems (granular gas). A laser beam is proposed to improve their utilization rate when casting organic polymers. The Lorenz-Mie theory is used to investigate interactions between the Gaussian beam light and granular gas. The energy is found to decay exponentially, which is affected by many factors, e.g., beam waist radius, particle size parameters or refractive index. A formula of decay law is derived and analyzed to well recover the simulated data, and is consistent with the known behaviors and relations physically.
WANG Han, ZHOU Zhewei, ZHANG Jinsong, ZHANG Jianhua, WANG Zhiliang . Attenuation characteristics of Gaussian beams passing through a granular system[J]. Journal of Shanghai University, 2018 , 24(3) : 392 -401 . DOI: 10.12066/j.issn.1007-2861.1821
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