DocumentCode
2678227
Title
THz from photoconductive antennas using circular and cylindrical Microlens arrays
Author
Singh, Abhishek ; Awari, Nilesh ; Prabhu, S.S. ; Vengurlekar, A.S.
Author_Institution
Tata Inst. of Fundamental Res., Mumbai, India
fYear
2011
fDate
2-7 Oct. 2011
Firstpage
1
Lastpage
2
Abstract
We study the THz radiation emission from interdigitated Photo-Conductive Antennas (iPCAs) fabricated on Semi-insulating GaAs substrates and excited using 800nm, 10fs, 76MHz laser pulses through circular and cylindrical Microlens arrays put over the antennas. THz emission is an order of magnitude higher from cylindrical micro-lens array compared to circular micro-lens array, at the same bias voltage. The line excitation appears to be more efficient in generating THz than a point excitation.
Keywords
antenna arrays; gallium arsenide; lens antennas; photoconducting devices; GaAs; circular microlens arrays; cylindrical microlens arrays; interdigitated photo-conductive antennas; photoconductive antennas; radiation emission; Antenna arrays; Lenses; Microoptics; Optical device fabrication; Optical pulses; Ultrafast optics;
fLanguage
English
Publisher
ieee
Conference_Titel
Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2011 36th International Conference on
Conference_Location
Houston, TX
ISSN
2162-2027
Print_ISBN
978-1-4577-0510-6
Electronic_ISBN
2162-2027
Type
conf
DOI
10.1109/irmmw-THz.2011.6105223
Filename
6105223
Link To Document