Chromatic effect in a novel THz generation scheme
Li, B; Zhang, WY; Liu, XQ; Deng, HX; Lan, TH; Liu, B; Liu, J; Wang, XT; Zeng, ZN; Zhang, LJ
2017
发表期刊NEW JOURNAL OF PHYSICS
ISSN1367-2630
卷号19期号:-页码:-
文章类型期刊论文
摘要Deriving single or few cycle terahertz (THz) pulse by an intense femtosecond laser through cascaded optical rectification is a crucial technique in cutting-edge time-resolved spectroscopy to characterize micro-scale structures and ultrafast dynamics. Due to the broadband nature of the ultrafast driving laser, the chromatic effect limits the THz conversion efficiency in optical rectification crystals, especially for those implementing the pulse-front tilt scheme, e.g. lithium niobate (LN) crystal, has been prevalently used in the past decade. In this research we developed a brand new type of LN crystal utilizing Brewster coupling, and conducted systematically experimental and simulative investigation for the chromatic effect and multi-dimensionally entangled parameters in THz generation, predicting that an extreme conversion efficiency of similar to 10% would be potentially achievable at the THz absorption coefficient of similar to 0.5 cm(-1). Moreover, we first discovered that the chirp of the driving laser plays a decisive role in the pulse-front tilt scheme, and the THz generation efficiency could be enhanced tremendously by applying an appropriate chirp.
关键词Optical Rectification Terahertz Generation Lithium-niobate Laser-pulses Spectroscopy Limitations Excitation Radiation Phase
DOI10.1088/1367-2630/aa82e7
关键词[WOS]OPTICAL RECTIFICATION ; TERAHERTZ GENERATION ; LITHIUM-NIOBATE ; LASER-PULSES ; SPECTROSCOPY ; LIMITATIONS ; EXCITATION ; RADIATION ; PHASE
收录类别SCI
语种英语
WOS记录号WOS:000415863200001
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/28580
专题中科院上海应用物理研究所2011-2018年
推荐引用方式
GB/T 7714
Li, B,Zhang, WY,Liu, XQ,et al. Chromatic effect in a novel THz generation scheme[J]. NEW JOURNAL OF PHYSICS,2017,19(-):-.
APA Li, B.,Zhang, WY.,Liu, XQ.,Deng, HX.,Lan, TH.,...&Zhang, LJ.(2017).Chromatic effect in a novel THz generation scheme.NEW JOURNAL OF PHYSICS,19(-),-.
MLA Li, B,et al."Chromatic effect in a novel THz generation scheme".NEW JOURNAL OF PHYSICS 19.-(2017):-.
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