碳类烟幕材料对太赫兹波的衰减特性

发布时间：2018-03-18 13:10

本文选题：太赫兹波　切入点：石墨　出处：《红外与激光工程》2017年05期 　论文类型：期刊论文

【摘要】：为获得太赫兹波对碳类烟幕的穿透特性,采用压片法分别将不同比例混合的石墨粉和KBr、碳黑粉和KBr进行压片,利用太赫兹时域光谱仪在0.2~1.1 THz频率范围内测试压片样品的太赫兹透射光谱,进而获得样品在该频率范围内的吸收系数。研究发现:随着频率的增大,样品的吸收系数均逐渐增大,且在同一频率处,其均随碳类粉末掺杂比例的增加而增大;与石墨相比,相同掺杂比例的碳黑样品具有更大的吸收系数。结果表明,太赫兹波具有较强的穿透石墨烟幕的能力,但其对碳黑烟幕的穿透能力较弱,利用碳黑有望进行太赫兹波段烟幕的研制。
[Abstract]:In order to obtain the penetrating characteristics of terahertz wave on carbon smoke screen, different proportions of mixed graphitic powder and kBr, black powder and KBr were pressed by pressing method, respectively. The terahertz transmission spectrum of the pressed sample was measured by THz time-domain spectrometer in the frequency range of 0.2g 1.1 THz, and the absorption coefficient of the sample was obtained in the range of this frequency. It is found that the absorption coefficient of the sample increases with the increase of the frequency. The absorption coefficients of the samples increased gradually, and at the same frequency, they all increased with the increase of carbon powder doping ratio, and the carbon black samples with the same doping ratio had a larger absorption coefficient than those of graphite. The results showed that the carbon black samples with the same doping ratio had higher absorption coefficients than the graphite samples. Terahertz wave has strong ability to penetrate graphite smoke screen, but its penetration ability to carbon black smoke screen is relatively weak, so it is expected to be used in the development of terahertz wave band smoke screen.
【作者单位】：脉冲功率激光技术国家重点实验室;
【基金】：国家高技术研究发展计划(2015AA0392) 脉冲功率激光技术国家重点实验室主任基金(SKL2016ZR05)
【分类号】：O441

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