A comparison of the performance of THz photoconductive antennas

Moreno, Enrique; Fernández Pantoja, Mario Alberto; Rubio Bretones, Amelia Consuelo; Ruiz Cabello, Miguel; González García, Salvador

a9_acomparison_awpl14_NOAGRAD.pdf (703.3Ko)

Identificadores

URI: http://hdl.handle.net/10481/50143

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Materia

Photoconductive antennas

Terahertz technology

Date

2014

Referencia bibliográfica

Moreno, Enrique; et. al. A comparison of the performance of THz photoconductive antennas. IEEE Antennas and Wireless Propagation Letters, vol.13, pp.682,685, 2014 [http://hdl.handle.net/10481/50143]

Patrocinador

This work was supported in part by the Spanish Ministry of Education under Project CSD2008-00068, the Junta de Andalucia Project P09-TIC-5327, the EU FP7/2007-2013 under Grant 205294 (HIRF-SE project), and the Spanish National Project TEC2010-20841-C04-04

Résumé

This letter explores the influence of the geometry of bias electrodes in the performance of terahertz (THz) photoconductive antennas (PCAs). To this end, a methodology is presented to calculate numerically the operational bandwidth and radiation efficiency of the PCAs. The procedure is validated through a comparison to experimental measurements. Also, results are depicted from numerical simulations of different PCAs under varying conditions of bias voltage, doping factor, and incident optical power. It is concluded that an appropriate con figuration of the electrodes may double the efficiency of the antennas, with a penalty in the bandwidth of the radiated pulse usually smaller than 10%.

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