Prism coupling of high-Q terahertz whispering-gallery-modes over two octaves from 02 THz to 11 THz | Zendy

Dominik Walter Vogt | Zendy; Angus Harvey Jones | Zendy; Harald G. L. Schwefel | Zendy; R. Leonhardt | Zendy

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Prism coupling of high-Q terahertz whispering-gallery-modes over two octaves from 02 THz to 11 THz

Author(s) -

Dominik Walter Vogt,

Angus Harvey Jones,

Harald G. L. Schwefel,

R. Leonhardt

Publication year - 2018

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.26.031190

Subject(s) - terahertz radiation , prism , optics , resonator , whispering gallery wave , broadband , terahertz spectroscopy and technology , whispering gallery , materials science , q factor , optoelectronics , physics

We report on prism coupling of high-quality (high-Q) terahertz (THz) whispering-gallery modes (WGMs) in spherical high resistivity float zone grown silicon (HRFZ-Si) resonators over two octaves from 0.2 THz to 1.1 THz. The WGMs are excited using a HRFZ-Si prism and show unprecedented quality factors of up to 2.2 × 10 4 . A detailed discussion of the phase-and mode-matching criteria of the prism coupling scheme implemented in the continuous wave THz spectroscopy system is presented. The results provide numerous opportunities for passive ultra-broadband high-Q devices operating in the THz frequency range.

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