Numerical analysis of terahertz generation characteristics of photoconductive antenna

Author

Jitao Zhang ; Mingguang Tuo ; Min Liang ; Xiong Wang ; Hao Xin

Author_Institution

Electr. & Comput. Eng. Dept., Univ. of Arizona, Tucson, AZ, USA

fYear

2014

fDate

6-11 July 2014

Firstpage

1746

Lastpage

1747

Abstract

A numerical model of terahertz (THz) photoconductive antenna (PCA) is developed and studied. This model includes the multi-physical phenomena of the PCA involving the light-matter interaction, photo-excited carrier dynamics and EM propagation of the generated THz radiation. Both in-house finite-difference-time-domain (FDTD) method and commercial tools such as COMSOL are used in this study. Various PCA-related parameters, such as the pump laser power, DC bias voltage, laser pulse width, and beam spot location, as well as material related parameters (e.g., carrier lifetime, mobility and doping density) can be investigated using this model.

Keywords

finite difference time-domain analysis; submillimetre wave antennas; FDTD method; PCA; in-house finite-difference-time-domain method; light-matter interaction; multi-physical phenomena; numerical analysis; photo-excited carrier dynamics; terahertz generation characteristics; terahertz photoconductive antenna; Antennas; Current density; Laser beams; Laser excitation; Mathematical model; Numerical models; Principal component analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE

Conference_Location

Memphis, TN

ISSN

1522-3965

Print_ISBN

978-1-4799-3538-3

Type

conf

DOI

10.1109/APS.2014.6905199

Filename

6905199