Phase-matching in KTP crystal for THz wave generation at room temperature and 81 K

doi:10.1016/j.infrared.2018.12.012

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	Phase-matching in KTP crystal for THz wave generation at room temperature and 81 K
	C.R.Wang; Q.K.Pan; F.Chen; G.Lanskii; N.Nikolaev
	2019
发表期刊	Infrared Physics & Technology
ISSN	1350-4495
卷号	97 页码:1-5
摘要	Optical properties of high-quality flux-grown potassium titanyl phosphate (KTiOPO4, KTP) crystals were studied at 81 K in the spectral range of 0.2-2.4 THz by terahertz time-domain spectroscopy and compared with the room temperature results. No strong phonon peaks were found at frequencies below 2.15 THz in the absorption spectra of alpha(x) approximate to alpha(y) components. At 81 K they do not exceed that of widely used GaSe crystal. Experimental data on the dispersion of refractive index at 81 K for THz waves polarized parallel to optical axes were approximated in the form of Sellmeier equations. Phase matching for collinear difference-frequency generation of visible and near-IR emission into the THz domain was found possible, as well as second harmonic generation within THz region that can be a basis for the new THz sources designs. Phase matching in KTP was found insensitive to temperature variation. These properties together with the exceptional set of other known physical properties render KTP crystal amongst the most prospective crystals for high-power THz wave generation under intense laser pumping.
关键词	KTP,Nonlinear crystal,Optical properties,Harmonic generation,Frequency mixing,potassium titanyl phosphate,optical-properties,ktiopo4,amplification,radiation,spectrum,laser,raman,Instruments & Instrumentation,Optics,Physics
DOI	10.1016/j.infrared.2018.12.012
收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/63024
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	C.R.Wang,Q.K.Pan,F.Chen,et al. Phase-matching in KTP crystal for THz wave generation at room temperature and 81 K[J]. Infrared Physics & Technology,2019,97:1-5.
APA	C.R.Wang,Q.K.Pan,F.Chen,G.Lanskii,&N.Nikolaev.(2019).Phase-matching in KTP crystal for THz wave generation at room temperature and 81 K.Infrared Physics & Technology,97,1-5.
MLA	C.R.Wang,et al."Phase-matching in KTP crystal for THz wave generation at room temperature and 81 K".Infrared Physics & Technology 97(2019):1-5.

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