Title :
High efficiency terahertz photoconducting sources by use of spatially shaped excitation
Author :
Kim, Joong H. ; Polley, Arup ; Ralph, Stephen E.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
We demonstrate a new excitation technique which dramatically improves the power and efficiency of photoconductive THz sources. Using an extended line excitation we mitigate screening effects reaching an average THz power of 8 μW at ∼ 27 mW average optical power.
Keywords :
anodes; photoconducting devices; submillimetre wave generation; 8 muW; screening effects; spatially shaped excitation; terahertz photoconducting sources; Acceleration; Anodes; Electrodes; Frequency; Geometrical optics; Nonlinear optics; Optical mixing; Optical saturation; Photoconductivity; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics Society, 2004. LEOS 2004. The 17th Annual Meeting of the IEEE
Print_ISBN :
0-7803-8557-8
DOI :
10.1109/LEOS.2004.1363267
