Efficient narrowband terahertz generation in cryogenically cooled periodically poled lithium niobate

被引：64

作者：

Carbajo, Sergio ^{[1
,2
,3
]}

Schulte, Jan ^{[1
,2
]}

Wu, Xiaojun ^{[1
,3
]}

Ravi, Koustuban ^{[1
,4
,5
]}

Schimpf, Damian N. ^{[1
,3
]}

Kaertner, Franz X. ^{[1
,2
,3
,4
,5
]}

机构：

[1] DESY, Ctr Free Electron Laser Sci, D-22607 Hamburg, Germany

[2] Univ Hamburg, Dept Phys, D-22761 Hamburg, Germany

[3] Hamburg Ctr Ultrafast Imaging, D-22761 Hamburg, Germany

[4] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA

[5] MIT, Elect Res Lab, Cambridge, MA 02139 USA

来源：

OPTICS LETTERS | 2015年 / 40卷 / 24期

基金：

欧洲研究理事会;

关键词：

TIME-DOMAIN SPECTROSCOPY; WAVE GENERATION; RADIATION; TEMPERATURE; ABSORPTION; CRYSTAL;

D O I：

10.1364/OL.40.005762

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present an efficiency scaling study of optical rectification in cryogenically cooled periodically poled lithium niobate for the generation of narrowband terahertz radiation using ultrashort pulses. The results show an efficiency and brilliance increase compared to previous schemes of up to 2 orders of magnitude by exploring the optimal pump pulse format at around 800 nm, and reveal saturation mechanisms limiting the conversion efficiency. We achieve >10(-3) energy conversion efficiencies, mu J- level energies, and bandwidths <20 GHz at similar to 0.5 THz, thereby showing unprecedented spectral brightness in the 0.1- 1 THz range relevant to terahertz science and technology. (C) 2015 Optical Society of America

引用

页码：5762 / 5765

页数：4

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