Study on terahertz generation from large-aperture photoconductive antenna
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Department of Information and Electronic Engineering, Zhejiang University, Hangzhou 310027, China;
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The Electromagnetics Academy at Zhejiang University, Hangzhou 310058, China
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Corresponding author:
YANG Dong-xiao, yangdx@zju.edu.cn
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Received Date:
2005-11-15
Accepted Date:
2006-04-21
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Abstract
The small dipole aperture antenna provides a normal way for THz radiation,for which the Drude-Lorentz theory provides method to calculate the terahertz waves from photoconductor.For sake of this Drude-Lorentz theory is not suitable for large-aperture photoconductive antenna,the calculation of terahertz radiation from biased photoconductive antenna(Drude-Lorentz theory) is reported,and a meliorated calculation method of carriers' density is put forward.Based on the new calculation model and simulation results,the effect of different factors on THz radiation is analyzed.The results show that the new calculation model is more suitable for a large aperture antenna.
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References
|
[1]
|
PIAO Z S,TANI M,SAKAI K.Carrier dynamics and terahertz radiation in photoconductive antennas[J].Japan J A P,2000,39 (1):96～100. |
|
[2]
|
DRAGOMAN D,DRAGOMAN M.Terahertz fields and applications[J].Progress in Quantum Electronics,2004,28 (1):1～6. |
|
[3]
|
RODRIGREZ G,TAYLOR A J.Screening of the bias field in terahertz generation from photoconductors[J].Opt Lett,1996,21 (14):1046～1048. |
|
[4]
|
SMITH P R,AUSTON D H.Subpicosecond photoconducting dipole antennas[J].IEEE J Q E,1988,24(2):255～260. |
|
[5]
|
SHI W,JIA W L,HOU L et al.Terahertz radiation from large aperture bulk semi-insulating GaAs photoconductive dipole antenna[J].Chinese Physics Letters,2004,21(9):1842～1844. |
|
[6]
|
SHI W,LI W J,ZHAO W.Investigation of ultra-wideband microwave generation based on photoconductive semiconductor switches[J].Acta Electronica Sinica,2004,32(11):1891～1893 (in Chinese). |
|
[7]
|
ZHANG T Y,CAO J C.Study of the surface and far fields of terahertz radiation generated by large-aperture photoconductive antennas[J].Chinese Physics,2004,13(10):1742(in Chinese). |
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