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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Veröffentlicht in:Photonics 2023-10, Vol.10 (10), p.1145
Hauptverfasser: Kitaeva, Galiya Kh, Safronenkov, Daniil A., Starkova, Natalia V.
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Sprache:eng
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Zusammenfassung: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
2304-6732
DOI:10.3390/photonics10101145