Multichannel THz line detection by a microlens array excited photoconductive antenna way

被引:0
作者
Pradarutt, B. [1 ]
Mueller, R. [1 ]
Matthaeus, G. [2 ]
Freese, W. [1 ]
Riehemann, S. [1 ]
Notni, G. [1 ]
Nolte, S. [2 ]
Tuennermann, A. [1 ,2 ]
机构
[1] Fraunhofer Inst Appl Opt & Precis Engn IOF, Jena, Germany
[2] Inst Appl Phys, Jena, Germany
来源
2008 33RD INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES, VOLS 1 AND 2 | 2008年
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中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We present multichannel THz ultrashort pulse detection by a photoconductive antenna array consisting of 16 photoconductive antennas. The efficient excitation of the photoconductive antennas has been realized by a microlens array which creates 16 single spots from the exciting fs-laser beam. The detected THz signal/noise ratio has been improved by an order of magnitude in comparison to an excitation by a line focus.
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页码:787 / +
页数:2
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