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