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为减少坦克在实战中的红外辐射, 分析了坦克炮慢射后的辐射特征, 针对其炮管所辐射的特征波长在812 m的电磁波,选用常见的SiO2和Si为介质, 并在考虑各自色散关系的基础上, 设计了具有光子晶体结构的防辐射涂层. 数值计算表明: 当两介质各取4层, 其几何厚度分别取1330和825 nm时,在812 m 的范围内有一个严格的带隙. 当两介质的几何厚度增加, 带隙红移, 宽度增加, 反之亦然. 只要两介质的几何厚度变化不同时超过10%, 原带隙总是存在. 当介质层数取78时, 涂层在上述波长范围内的严格带隙已形成, 介质层数再增加, 带隙没有实质性的变化. 带隙结构对入射角的变化并不敏感.In order to reduce the infrared radiation of tank in actual combat, characteristics of tank barrel radiation after low speed firing are analyzed. Common SiO2 and Si are selected as the mediums according to the barrel radiation characteristic wavelength of 812 m. With the consideration of the dispersion relation, an insulating coating with photonic crystal structure is designed. Mathematical computation indicates that when the two mediums each have 4 layers and their geometric thicknesses are 1330 nm and 825 nm respectively, there will be a strict band gap of 812 m. When the geometric thicknesses of the two mediums increase, the band gap will have red shifts and the width will increase, and vice versa. As long as the geometry thickness variations of the two mediums are less than 10%, the original band gap will always exists. When the mediums are of 78 layers, the coating form a strict band gap in the above mentioned wavelength range. With the medium layer number increasing, there will be no substantial change with the band gap. The band gap structure is not sensitive to the change of incidence angle.
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Keywords:
- photonic crystal /
- infrared radiation /
- band gap /
- coating
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[2] Jhon S 1987 Phys. Rev. Lett. 58 2486
[3] Olivier S, Rattier M, Benisty H, Weisbuch C, Smith C J M, de La Rue R M, Krauss T F, Oesterle U, Houdre R 2001 Phys. Rev. B 63 113311
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[16] Dong L J, Jiang H T, Yang C Q, Shi Y L 2007 Acta Phys. Sin. 56 4657 (in Chinese) [董丽娟,江海涛,杨成全,石云龙 2007 56 4657]
[17] Chen L, He S L, Shen L F 2003 Acta Phys. Sin. 52 2386 (in Chinese) [陈龙, 何赛灵, 沈林放 2003 52 2386]
[18] Liu Q H, Hu D S, Yin X G, Wang Y Q 2011 Acta Phys. Sin. 60 094101 (in Chinese) [刘其海, 胡冬生,尹小刚, 王彦庆 2011 60 094101]
[19] Song G, Xu J P, Yang Y P 2011 Acta Phys. Sin. 60 074101 (in Chinese) [宋戈, 许静平, 羊亚平 2011 60 074101]
[20] Lin Y C, Lu W Q 1990 Principle of Optical Thin Films (1st Ed.) (Beijing: National Defense Industry Press) p40 (in Chinese) [林永昌, 卢维强1999光学薄膜原理 (北京:国防工业出版社) 第40页]
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[1] Yablonovitch E 1987 Phys. Rev. Lett. 58 2059
[2] Jhon S 1987 Phys. Rev. Lett. 58 2486
[3] Olivier S, Rattier M, Benisty H, Weisbuch C, Smith C J M, de La Rue R M, Krauss T F, Oesterle U, Houdre R 2001 Phys. Rev. B 63 113311
[4] Bayindir M, Temelkuran B, Ozbay E 2000 Phys. Rev. Lett. 84 2140
[5] Li Z Y, Zhang Z Q 2000 Phys. Rev. B 62 1516
[6] Belov P A 2003 Microw. Opt. Tech. Lett. 37 259
[7] Chan D L, Soljacic M, Joannopoulos J D 2006 Phys. Rev. E 74 016609
[8] Liu D M, Han P 2010 Acta Phys. Sin. 59 7066 (in Chinese) [刘冬梅, 韩鹏 2010 59 7066]
[9] Li W S, Huang H M, Fu Y H, Zhang Q, Shi D F 2012 Infrared and Laser Engineering 41 69 (in Chinese) [李文胜,黄海铭,付艳华,张琴,是度芳 2012红外与激光工程 41 69]
[10] Jiang H T, Chen H, Li H Q, Zhang Y W, Zhu S Y 2003 Appl. Phys. Lett. 83 5386
[11] Shen J P, Liu J Y, Hu D G 2007 Infrared and Laser Engineering 36 555 (in Chinese) [沈均平, 刘建永, 胡登高2007红外与激光工程 36 555]
[12] Lü J W, Li H Y, Zhu M 2006 Modern Defense Technolog 34 92 (in Chinese) [吕俊伟, 李海燕, 朱敏 2006 现代防御技术 34 92]
[13] Mu L, Wang L X, Huang Y 2007 Mater. Rev. 1 122 (in Chinese) [沐磊,王丽熙, 黄芸2007 材料导报 1 122]
[14] Zeng J Y 2003 Quantum Mechanics (Beijing: Science Press) p9 (in Chinese) [曾谨言2003 量子力学 (北京:科学出版社) 第9页]
[15] Quan X L, Yang X B 2009 Chin. Phys. B 18 5313
[16] Dong L J, Jiang H T, Yang C Q, Shi Y L 2007 Acta Phys. Sin. 56 4657 (in Chinese) [董丽娟,江海涛,杨成全,石云龙 2007 56 4657]
[17] Chen L, He S L, Shen L F 2003 Acta Phys. Sin. 52 2386 (in Chinese) [陈龙, 何赛灵, 沈林放 2003 52 2386]
[18] Liu Q H, Hu D S, Yin X G, Wang Y Q 2011 Acta Phys. Sin. 60 094101 (in Chinese) [刘其海, 胡冬生,尹小刚, 王彦庆 2011 60 094101]
[19] Song G, Xu J P, Yang Y P 2011 Acta Phys. Sin. 60 074101 (in Chinese) [宋戈, 许静平, 羊亚平 2011 60 074101]
[20] Lin Y C, Lu W Q 1990 Principle of Optical Thin Films (1st Ed.) (Beijing: National Defense Industry Press) p40 (in Chinese) [林永昌, 卢维强1999光学薄膜原理 (北京:国防工业出版社) 第40页]
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