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arXiv · 2507.21052

Monolithic optoelectronic circuit design for on-chip terahertz applications

Kateryna Kusyak·Benedikt Schulte·Toru Matsuyama·Gunda Kipp·Hope M. Bretscher·Matthew W. Day·Guido Meier·Alexander M. Potts·James W. McIver
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Abstract

We demonstrate a monolithic coplanar stripline platform for on-chip terahertz (THz) generation, transmission, and detection, addressing key challenges of mode purity, bandwidth, and referencing. Capacitive coupling of the photoconductive generator switch enforces pure odd-mode propagation, increases THz field strength, and extends the operational frequency range, achieving 0.05-1.4 THz. Our architecture enables fully monolithic fabrication with amorphous silicon switches, in situ field referencing, and galvanic isolation between generation and detection. Finite-element simulations and experiments confirm that suppressing parasitic modes improves signal integrity, providing a robust platform for high-fidelity THz spectroscopy, ultrafast electronics, and nanoscale quantum materials research.

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BibTeXRIS

Kateryna Kusyak, Benedikt Schulte, Toru Matsuyama, Gunda Kipp, Hope M. Bretscher, Matthew W. Day, Guido Meier, Alexander M. Potts, James W. McIver. 2025-07-28. Monolithic optoelectronic circuit design for on-chip terahertz applications. https://doi.org/10.1063/5.0278183

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