Terahertz wave source via difference-frequency mixing using cross-Reststrahlen band dispersion compensation phase matching: a material study

Messaoud Bahoura; Gregory S. Herman; Norman P. Barnes; Carl E. Bonner Jr.; Patrick T. Higgins

doi:10.1117/12.379910

23 March 2000 Terahertz wave source via difference-frequency mixing using cross-Reststrahlen band dispersion compensation phase matching: a material study

Messaoud Bahoura, Gregory S. Herman, Norman P. Barnes, Carl E. Bonner Jr., Patrick T. Higgins

Author Affiliations +

Proceedings Volume 3928, Nonlinear Materials, Devices, and Applications; (2000) https://doi.org/10.1117/12.379910
Event: Symposium on High-Power Lasers and Applications, 2000, San Jose, CA, United States

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.

Citation Download Citation

Messaoud Bahoura, Gregory S. Herman, Norman P. Barnes, Carl E. Bonner Jr., and Patrick T. Higgins "Terahertz wave source via difference-frequency mixing using cross-Reststrahlen band dispersion compensation phase matching: a material study", Proc. SPIE 3928, Nonlinear Materials, Devices, and Applications, (23 March 2000); https://doi.org/10.1117/12.379910

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