Near-optimal intense and powerful terahertz source by optical rectification in lithium niobate crystal

被引：61

作者：

Guiramand, L. ^{[1
]}

Nkeck, J. E. ^{[1
]}

Ropagnol, X. ^{[1
,2
]}

Ozaki, T. ^{[2
]}

Blanchard, F. ^{[1
]}

机构：

[1] Ecole Technol Super, Dept Genie Elect, Montreal, PQ H3C 1K3, Canada

[2] Inst Natl Rech Sci Energie Mat Telecommun, Varennes, PQ J3X 1P7, Canada

来源：

PHOTONICS RESEARCH | 2022年 / 10卷 / 02期

基金：

加拿大自然科学与工程研究理事会;

关键词：

EFFICIENT GENERATION; THZ PULSES; LASER; SETUP;

D O I：

10.1364/PRJ.428418

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Using a 400 mu J ytterbium laser combined with a novel pulse compression technique, we demonstrate a state-of-the-art terahertz (THz) source from the tilted-pulse front pumping scheme in lithium niobate at room temperature with record efficiency of 1.3% capable of generating 74 mW of average power and 400 kV/cm at focus. Key points of this demonstration include the use of a pump pulse duration of 280 fs in combination with a stair-step echelon mirror and an off-axis ellipsoidal mirror. This source has unmatched characteristics of generating intense and powerful THz pulses at the same time and remains highly scalable as compared to existing Ti:sapphire-based THz sources pumped in the millijoule range. (C) 2022 Chinese Laser Press

引用

页码：340 / 346

页数：7

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