摘要
用太赫兹时域光谱（THz-TDS）技术研究材料的光学性质是太赫兹应用领域的一个研究热点,国内已经在毒品,爆炸物的无损检测,有机物大分子的识别方面取得了大量成果。文章结合THz-TDS技术的特点及其在物质成分识别方面的应用,测得三种和田玉（羊脂白玉,青花玉,青玉）在0.2~2.6 THz的吸收系数和折射率曲线,不同种类的和田玉吸收系数差别很大,折射率在0.2~2.6 THz波段为2.4~2.7。实验结果初步说明,通过太赫兹波段的吸收谱和折射率的特征差异与种类之间的关系判断和田玉的种类是可行的,为无损和田玉种类鉴别提供一种新型的方法。
Terahertz time-domain spectroscopy（THz-TDS） technique has a wide range of applications including illicit drugs and explosive detection,and organic molecules recognition.In the present paper,the spectral features of three kinds of Hotan jade were studied experimentally by THz-TDS technique and the characteristic absorption spectra and refractive index were obtained in the range of 0.2 to 2.6 THz.The experimental results show that different samples have different absorption characters,and the refractive index is 2.42.7 in the range of 0.2-2.6 THz.The results indicate that it is feasible to apply THz-TDS technique to identification of Hotan jade,which provides a new approach to the nondestructive examination of Hotan jade.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2010年第10期2597-2600,共4页
Spectroscopy and Spectral Analysis
基金
北京市教委项目(KM200910028005)
国家重点基础研究发展计划(973计划)项目(2007CB310408
2006CB302901)
新疆和田师范专科学校交际课题(1076509065)资助
关键词
太赫兹时域光谱技术
和田玉
吸收系数
折射率
Terahertz time-domain spectroscopy
Hotan jade
Absorption spectra
Refractive index
