| 交联聚苯乙烯的太赫兹光谱特性 |
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| 引用本文： | 梁建峰,崔刚强,常超,赵红卫,任冠华,张建兵,刘文元,涂敏.交联聚苯乙烯的太赫兹光谱特性[J].强激光与粒子束,2017,29(10):103101. |
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| 作者姓名： | 梁建峰 崔刚强 常超 赵红卫 任冠华 张建兵 刘文元 涂敏 |
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| 作者单位： | 1.西北核技术研究所, 高功率微波技术重点实验室, 西安 71 0024; |
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| 摘 要： | 交联聚苯乙烯是一种热固性塑料，具有优异的介电特性和耐高压击穿能力等特性。采用基于太赫兹波空气电离相干探测法(THz-ABCD)的太赫兹时域光谱系统，测量了交联聚苯乙烯和聚苯乙烯样品在太赫兹的光谱特性，得到了其在2~13 THz频段的吸收系数、折射率等光学参数。研究结果表明:交联聚苯乙烯和聚苯乙烯的吸收谱形状相似，在6.6，9.8和12.25 THz等处存在多个吸收峰，但是交联聚苯乙烯的吸收系数在12 THz以下高于聚苯乙烯，在12 THz以上低于聚苯乙烯；交联聚苯乙烯的折射率高于聚苯乙烯，聚苯乙烯的折射率在1.58~1.59之间，交联聚苯乙烯的折射率在1.59~1.62之间。
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| 关 键 词： | 交联聚苯乙烯 太赫兹时域光谱 空气电离相干探测 吸收系数 |
| 收稿时间： | 2017-04-14 |
Terahertz spectroscopic properties of cross-linked polystyrene |
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| Affiliation: | 1.Northwest Institute of Nuclear Technology,Xi’an 710024,China;2.Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China;3.College of Precision Instrument and Optoelectronics Engineering,Tianjin University,Tianjin 300072,China |
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| Abstract: | Cross-linked polystyrene is a kind of thermosetting plastic with excellent dielectric properties and high breakdown voltage. We measured the terahertz spectra of cross-linked polystyrene and polystyrene using THz-TDS based on THz-ABCD(air biased coherent detector), and the absorption coefficients and refractive indexes in the range of 2-13 THz were obtained. The terahertz spectra of cross-linked polystyrene and polystyrene were similar, and there existed several absorption peaks such as 6.6 THz, 9.8 THz and 12.25 THz, the absorption coefficient of cross-linked polystyrene was higher than that of polystyrene below 12 THz but lower above 12 THz, the refractive index of cross-linked polystyrene (1.59-1.62) was higher than that of polystyrene (1.58-1.59). |
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