基于二维相关分析的ZnS材料声子交互作用研究
投稿时间:2017-04-17  修订日期:2017-05-12  点此下载全文
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刘华松 中国航天科工飞航技术研究院, 天津市津航技术物理研究所, 天津市薄膜光学重点实验室 liuhuasong@hotmail.com 
杨 霄 中国航天科工飞航技术研究院, 天津市津航技术物理研究所, 天津市薄膜光学重点实验室  
刘丹丹 中国航天科工飞航技术研究院, 天津市津航技术物理研究所, 天津市薄膜光学重点实验室  
李士达 中国航天科工飞航技术研究院, 天津市津航技术物理研究所, 天津市薄膜光学重点实验室  
季一勤 中国航天科工飞航技术研究院, 天津市津航技术物理研究所, 天津市薄膜光学重点实验室 ji_yiqin@yahoo.com 
张锋 中国航天科工飞航技术研究院, 天津市津航技术物理研究所, 天津市薄膜光学重点实验室  
陈德应 哈尔滨工业大学  
基金项目:国家自然科学(61405145)、天津市自然科学重点基金(15JCZDJC31900)、中国博士后科学基金(2015T80115,2014M560104)
中文摘要:硫化锌材料是长波红外光学窗口材料优选材料之一。针对化学气相沉积(CVD)和热压成形(HP)两种工艺制备的硫化锌窗口,研究了从室温到600℃的光谱透过率变化现象,基于二维相关光谱分析技术,获得了长波吸收区内的声子交互作用。研究结果表明:在700cm-1-1250cm-1的长波吸收波段,CVD ZnS的声子频率为横向振动模式下(TO)的三次谐波频率和纵向声学模式下(LA)的三次谐波频率;HP ZnS的声子频率分别为3TO、3LA和4LA,并且在温度作用下的响应顺序依次为3LA、3TO和4LA。两种工艺制备的ZnS杂质振动吸收在温度作用下对2000cm-1-1250cm-1范围内的光谱透过率产生影响,出现不同程度的透过率增加现象,由于两者含有杂质的区别,在高温下CVD ZnS的透过率变化比HP ZnS较为显著。
中文关键词:CVD ZnS, HP ZnS, 声子, 二维相关分析
 
Study on multi-phonon interaction of ZnS material based on two - dimensional correlation analysis
Abstract:Zinc sulfide material is one of the important materials for infrared optical window in the long wavelength region. In this paper, the change of the spectral transmittance from room temperature to 600℃ was studied for the zinc sulfide materials prepared by chemical vapor deposition (CVD) and hot pressing (HP). Based on the two-dimensional correlation spectrum analysis technique, the interaction of the phonons in the long wave absorption region is obtained. In the long wave absorption band from 700cm-1 to 1250cm-1, the phonon frequencies of CVD ZnS is the third harmonic frequencies in the transverse vibration mode (TO) and the third harmonic frequency in the longitudinal acoustic mode (LA). The phonon frequencies of HP ZnS are 3TO, 3LA and 4LA, and the response under temperature is 3LA, 3TO and 4LA in proper order. The vibration absorption of ZnS impurity prepared by the two techniques has an effect on the spectral transmittance in the range from 1250cm-1 to 2000cm-1 under the action of temperature, and the increase of the transmittance in different degrees occurs. Because of the difference of impurities, the transmittance of CVD ZnS is more significant than that of HP ZnS at high temperature environment.
keywords:CVD  ZnS, HP  ZnS, phonon, two-dimensional  correlation analysis
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