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Proceedings Paper

Terahertz wave source via difference-frequency mixing using cross-Reststrahlen band dispersion compensation phase matching: a material study
Author(s): Messaoud Bahoura; Gregory S. Herman; Norman P. Barnes; Carl E. Bonner; Patrick T. Higgins
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Paper Abstract

A novel phase-matching technique for coherent THz-wave generation was proposed. This approach uses cross- Reststrahlen band dispersion compensation phase-matching in a collinear optical mixing technique using isotropic, semiconductor nonlinear crystals. The pump and signal sources are in the near-IR transmission window of the nonlinear crystal and the generated idler wave is in the far-IR transmission window, on the other side of the crystal's Reststrahlen band. The choice of the nonlinear crystal for frequency conversion from the near-IR to the far-IR is highly dependent on the optical properties of the nonlinear crystal being used as the frequency converter element. We evaluate the use of the proposed phase-matching technique with a variety of III-V and II-VI compounds taking into account their optical dispersion and their phase- matching properties. Theoretical projections of the device performance such as perfect phase-matching conditions, coherence length and wavelength tuning range for different nonlinear crystals are compared.

Paper Details

Date Published: 23 March 2000
PDF: 9 pages
Proc. SPIE 3928, Nonlinear Materials, Devices, and Applications, (23 March 2000); doi: 10.1117/12.379910
Show Author Affiliations
Messaoud Bahoura, NASA Langley Research Ctr. (United States)
Gregory S. Herman, Science Applications International Corp. (United States)
Norman P. Barnes, NASA Langley Research Ctr. (United States)
Carl E. Bonner, Norfolk State Univ. (United States)
Patrick T. Higgins, Norfolk State Univ. (United States)


Published in SPIE Proceedings Vol. 3928:
Nonlinear Materials, Devices, and Applications
Jeffrey W. Pierce, Editor(s)

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