Bonn 2025 – wissenschaftliches Programm

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K: Fachverband Kurzzeit- und angewandte Laserphysik

K 2: Laser Technology and Applications (joint session Q/K)

K 2.1: Vortrag

Montag, 10. März 2025, 11:00–11:15, HS V

Simulation of Optically Induced Electrical Picosecond Pulses on Coplanar Waveguides Using PySpice — •Sophie-Luise Hachmeister and Heiko Füser — Physikalisch Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig

The generation and characterization of optically induced electrical picosecond pulses is vital for the calibration of high-frequency electrical devices. Coplanar waveguides (CPWs) are commonly employed as platform for the generation, propagation and utilization of these pulses. While experimental techniques have been extensively explored, a notable gap persists in accurately simulating the pulse propagation characteristics. This work aims to address this shortcoming by developing a simulation framework utilizing PySpice, an open-source circuit simulation library in Python. The proposed model simulates the generation and propagation of picosecond pulses on CPWs, incorporating optical input parameters, the electrical properties of the CPW, and the characteristics of connected devices. To validate the framework, the simulation results are benchmarked against experimental measurements. Initial findings demonstrate a strong correlation between simulated and observed pulse dynamics, underscoring the model*s capacity to replicate the physical behavior effectively. By bridging the gap between experimental observations and computational simulations, this work offers a powerful tool detailing on high-frequency signal generation and enhances the understanding of optically induced electrical pulses. Future research will expand on these findings by exploring novel experimental setups and adapting the simulation model accordingly.

Keywords: High-Frequency Signal Generation; Pulse Propagation Modeling; Optically Induced Electrical Pulses