Tunable narrow band difference frequency THz wave generation in DAST via dual seed PPLN OPG

被引：32

作者：

Dolasinski, Brian ^{[1
]}

Powers, Peter E. ^{[1
,2
]}

Haus, Joseph W. ^{[1
]}

Cooney, Adam ^{[3
]}

机构：

[1] Univ Dayton, Electroopt Program, Dayton, OH 45469 USA

[2] Univ Dayton, Dept Phys, Dayton, OH 45469 USA

[3] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA

来源：

OPTICS EXPRESS | 2015年 / 23卷 / 03期

关键词：

ORGANIC NONLINEAR CRYSTALS; TERAHERTZ; INDEX;

D O I：

10.1364/OE.23.003669

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report a widely tunable narrowband terahertz (THz) source via difference frequency generation (DFG). A narrowband THz source uses the output of dual seeded periodically poled lithium niobate (PPLN) optical parametric generators (OPG) combined in the nonlinear crystal 4-dimthylamino-N-methyl-4-stilbazolium-tosylate (DAST). We demonstrate a seamlessly tunable THZ output that tunes from 1.5 THz to 27 THz with a minimum bandwidth of 3.1 GHz. The effects of dispersive phase matching, two-photon absorption, and polarization were examined and compared to a power emission model that consisted of the current accepted parameters of DAST. (C) 2015 Optical Society of America

引用

页码：3669 / 3680

页数：12