Terahertz wave generation from gas plasma using a phase compensator with attosecond phase-control accuracy

被引：66

作者：

Dai, Jianming ^{[1
]}

Zhang, X. -C. ^{[1
]}

机构：

[1] Rensselaer Polytech Inst, Ctr Terahertz Res, Troy, NY 12180 USA

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 02期

基金：

美国国家科学基金会;

关键词：

plasma production by laser; plasma properties; submillimetre wave generation; LASER-PULSES; EMISSION; AIR; THZ;

D O I：

10.1063/1.3068501

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the use of a precise phase compensator for the generation of intense terahertz waves from laser-induced gas plasma excited by a femtosecond pulse (omega) and its second harmonic (2 omega) at both close contact and standoff distances. The attosecond accuracy phase-control capability of the device enables further optimization of the terahertz emission from gas plasma and elimination of the temporal walkoff between the omega and 2 omega pulses traveling in dispersive media, resulting in intense terahertz generation at a distance of over 100 m by sending the optical beams far away and focusing them locally.

引用

页数：3

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