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
收藏
页码：3669 / 3680
页数：12
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