Terahertz-wave surface-emitted difference-frequency generation without quasi-phase-matching technique

被引：20

作者：

Avetisyan, Yuri H. ^{[1
]}

机构：

[1] Yerevan State Univ, Dept Microwave Engn & Commun, Yerevan 0025, Armenia

来源：

OPTICS LETTERS | 2010年 / 35卷 / 15期

关键词：

POLED LITHIUM-NIOBATE; EFFICIENT GENERATION; GUIDE; GAAS; CRYSTAL;

D O I：

10.1364/OL.35.002508

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A scheme of terahertz (THz)-wave surface-emitted difference-frequency generation (SEDFG), which lacks the drawbacks associated with the usage of periodically orientation-inverted structures, is proposed. It is shown that both material birefringence of the bulk LiNbO3 crystal and modal birefringence of GaAs/AlAs waveguide are sufficient to obtain SEDFG up to a frequency of similar to 3 THz. The simplicity of the proposed scheme, along with the fact that there is a much smaller THz-wave decay in nonlinear crystal, makes it a good candidate for the practical realization of efficient THz generation. The use of a GaAs waveguide with an oxidized AlAs layer is proposed for enhanced THz-wave SEDFG in the vicinity of the GaAs polariton resonance at 8 THz. (C) 2010 Optical Society of America

引用

页码：2508 / 2510

页数：3

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