Comparative study of equivalent circuit models for photoconductive antennas

O. A. Castañeda-Uribe, C. A. Criollo, S. Winnerl, M. Helm, A. Avila

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

12 Citas (Scopus)

Resumen

Comparison of equivalent circuit models (ECM) for photoconductive antennas (PCA) represents a challenge due to the multiphysics phenomena involved during PCA operation and the absence of a standardized validation methodology. In this work, currently reported ECMs are compared using a unique set of simulation parameters and validation indicators (THz waveform, optical power saturation, and ECM voltages consistency). The ECM simulations are contrasted with measured THz pulses of an H-shaped 20μm gap PCA at different optical powers (20mW to 220mW). In addition, an alternative two-element ECM that accounts for both space-charge and radiation screening effects is presented and validated using the proposed methodology. The model shows an accurately reproduced THz pulse using a reduced number of circuital elements, which represents an advantage for PCA modeling.

Idioma originalInglés estadounidense
Páginas (desde-hasta)29017-29031
Número de páginas15
PublicaciónOptics Express
Volumen26
N.º22
DOI
EstadoPublicada - oct. 29 2018
Publicado de forma externa

Áreas temáticas de ASJC Scopus

  • Óptica y física atómica y molecular

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