Monolithic optoelectronic circuit design for on-chip terahertz applications

2025/07/28 by Kusyak, Kateryna, Schulte, Benedikt, Matsuyama, Toru +6 · 1 citation
#FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Optics (physics.optics)

paper · doi:10.48550/arxiv.2507.21052

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.

Citations

• Cavity electrodynamics of van der Waals heterostructures
• On-chip transfer of ultrashort graphene plasmon wavepackets using terahertz electronics
• Ultrafast intrinsic optical-to-electrical conversion dynamics in graphene photodetector
• Excitation, detection, and electrostatic manipulation of terahertz-frequency range plasmons in a two-dimensional electron system
• Far-infrared time-domain spectroscopy with terahertz beams of dielectrics and semiconductors

Cited by

• Response regimes in on-chip THz spectroscopy

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