The calculation of terahertz wave power radiated from GaAs photoconductive antenna | Zendy

Wanli Jia | Zendy; Wei Shi | Zendy; Guanghui Qu | Zendy; Sun Xiao-Fang | Zendy

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The calculation of terahertz wave power radiated from GaAs photoconductive antenna

Author(s) -

Wanli Jia,

Wei Shi,

Guanghui Qu,

Sun Xiao-Fang

Publication year - 2008

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.57.5425

Subject(s) - terahertz radiation , effective radiated power , photoconductivity , antenna (radio) , optics , optoelectronics , physics , photomixing , power (physics) , antenna aperture , radiation , materials science , radiation pattern , laser , terahertz metamaterials , telecommunications , far infrared laser , computer science , quantum mechanics

Based on the Larmor formula, a mathematic model is established to calculate the power of THz wave radiated form the photoconductive antenna. The power of THz waves radiated by GaAs photoconductive antenna under different experimental conditions was calculated by Monte Carlo simulations. The results show that the power of THz radiation can be improved by increasing the bias electric field or the energy of triggering light pulse, and large-aperture photoconductive antenna can emit THz wave with higher power compared with photoconductive antennas with small apertures because the former can carry more photo-generated carriers.

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