摘要
利用双积分球光电管系统实验研究了不同厚度的芳纶纤维复合材料在不同强度的1.06μm激光辐照下(低于烧蚀阈值的激光强度)的反射和透射特性,在材料厚度一定时,反射率随着激光功率密度的增加而增加,透射率则呈现指数衰减;激光功率一定时,反射率随着材料厚度的增加而增加,透射率则呈现衰减。通过反射率和透过率可以确定出表面吸收和体吸收的激光能量份额。
The absorption characteristics of the composite reinforced by polyaryl amide fibers irradiated by laser beam with a wavelength of 1.06μm were investigated using two integrated spheres and photodiode system. The intensity of laser beam, surface and volumetric reflectivity, volumetric absorption coefficient, transmissivity were obtained from the experiments. Experiments results show that volumetric reflectivity increases with both material thickness and laser intensity, volumetric absorption coefficient increases with material thickness, but decreases with laser intensity. A reasonable explanation is suggested based on the results and the material properties.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2003年第11期1065-1067,共3页
High Power Laser and Particle Beams
关键词
双积分球
激光
吸收特性
复合材料
表面吸收
Bi-integrated sphere
Laser
Absorption characteristics
Composite
Surface absorption
