Optical properties of DAST in the THz range | Zendy

Paul D. Cunningham | Zendy; L. Michael Hayden | Zendy

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Optical properties of DAST in the THz range

Author(s) -

Paul D. Cunningham,

L. Michael Hayden

Publication year - 2010

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.18.023620

Subject(s) - terahertz radiation , optical rectification , optics , materials science , optoelectronics , terahertz spectroscopy and technology , absorption (acoustics) , crystal (programming language) , spectrometer , infrared , common emitter , nonlinear optics , laser , physics , computer science , programming language

We report the far-infrared properties of the organic crystal DAST, a popular terahertz emitter, from 0.6-12 THz through use of a THz spectrometer incorporating air-plasma THz generation and electro-optic (EO) sampling in a poled EO polymer. We identify absorption features at 1.1, 3.1, 5.2, 7.1, 8.4, 11, and 12.3 THz and at 1.1, 1.3, 1.6, 2.2, 3, 5.2, 7.2, 9.6 and 11.7 THz for a-axis and b-axis polarized THz radiation respectively. These results allow for more accurate prediction of the optimum crystal thickness for broadband THz emission via optical rectification and difference frequency generation.

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