Document Type

Article

Publication Date

2-2015

Publication Source

Optics Express

Abstract

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.

Inclusive pages

3669-3680

ISBN/ISSN

1094-4087

Document Version

Published Version

Comments

The document available for download is an open-access article, provided in compliance with the publisher's paid open-access policy.

Permission documentation is on file.

Publisher

Optical Society of America

Volume

23

Issue

3

Peer Reviewed

yes

Link to published version

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