An Improvement of the Cherenkov THz Generation Scheme Using Convex Silicon Prism-Lens Adapters

The terahertz (THz) generation efficiency in the Cherenkov optical rectification scheme can be improved significantly if the silicon adaptor, mounted at the lateral surface of a nonlinear crystal, has a convex output surface with proper geometry. We demonstrate and compare with the results of direct...

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Bibliographic Details
Published in:Photonics
Main Authors: Galiya Kh. Kitaeva, Daniil A. Safronenkov, Natalia V. Starkova
Format: Article
Language:English
Published: MDPI AG 2023-10-01
Subjects:
terahertz
optical rectification
Cherenkov THz generation
Si prism adaptor
Online Access:https://www.mdpi.com/2304-6732/10/10/1145
Description
Summary:The terahertz (THz) generation efficiency in the Cherenkov optical rectification scheme can be improved significantly if the silicon adaptor, mounted at the lateral surface of a nonlinear crystal, has a convex output surface with proper geometry. We demonstrate and compare with the results of direct experiments a method for theoretically modeling the angular distributions of the spectral power of THz radiation in the case of different Si adaptors, constructed by mounting plano-spherical lenses on a conventional flat Si prism. The applied method of theoretical modeling shows its usefulness in choosing the best Si adapter geometry.
ISSN:2304-6732

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