Energy Scaling of Terahertz Pulses Produced through Difference Frequency Generation

被引：4

作者：

Bai, Ya ^{[1
]}

Song, Li-Wei ^{[1
]}

Liu, Peng ^{[1
,2
]}

Li, Ru-Xin ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China

[2] Shanghai Jiao Tong Univ, Collaborat Innovat Ctr IFSA, Shanghai 200240, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2017年 / 34卷 / 01期

基金：

中国国家自然科学基金;

关键词：

THZ PULSES; LASER; FIELDS; MV/CM;

D O I：

10.1088/0256-307X/34/1/014201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the energy scaling of terahertz (THz) emission through difference frequency generation of near-infrared pulses, and demonstrate that Gigawatt few-cycle THz transients at the central frequency of 30 THz are produced from GaSe crystal pumped by two pulses at 1.65 and 1.95 micrometers, with the high quantum yield of 28%. Our analysis indicates that the high yield of DFG originates from the largely reduced group velocity mismatch as the long-wavelength pumping pulses are employed.

引用

页数：4

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