Unidirectional radiation of widely tunable THz wave using a prism coupler under noncollinear phase matching condition

被引：118

作者：

Kawase, K ^{[1
]}

Sato, M ^{[1
]}

Nakamura, K ^{[1
]}

Taniuchi, T ^{[1
]}

Ito, H ^{[1
]}

机构：

[1] TOHOKU UNIV,ELECT COMMUN RES INST,SENDAI,MIYAGI 98077,JAPAN

来源：

APPLIED PHYSICS LETTERS | 1997年 / 71卷 / 06期

关键词：

D O I：

10.1063/1.119635

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A widely tunable THz wave has been parametrically generated and reported recently by us utilizing a LiNbO3 crystal with a monolithic grating coupler under a noncollinear phase matching condition. However, the output direction of the THz wave is strongly dependent on the generated frequency due to the nature of noncollinear phase matching, as well as the grating coupler. In this letter, a novel method for THz coupling is proposed using a low dispersion prism to eliminate almost completely the THz beam deflection for the entire tuning range. The unidirectional THz wave radiation was confirmed theoretically and experimentally for the range of 1-2 THz. (C) 1997 American Institute of Physics.

引用

页码：753 / 755

页数：3

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