Title :
Enhancement of THz EO sampling efficiency using waveguides
Author :
Tsuzuki, Satoshi ; Nagase, Tomohiro ; Takeshima, Daiki ; Kinoshita, Tetsuya ; Horita, Kazuki ; Que, Christopher T. ; Estacio, Elmer ; Bakunov, Michael I. ; Kawase, Kodo ; Kurihara, Kazuyoshi ; Kuwashima, Fumiyoshi ; Furuya, Takashi ; Yamamoto, Kohji ; Nis
Author_Institution :
Res. Center for Dev. of Far-Infrared Region, Univ. of Fukui, Fukui, Japan
Abstract :
We have observed a significant enhancement in the electro-optic sampling efficiency for THz radiation by using focusing effect in a metallic tapered parallel plate waveguide and also an optical waveguide in LiNbO3 employed as an EO crystal. The total enhancement factor exceeds an order of magnitude as compared to the case with a bulk LiNbO3 crystal coupled with a Si prism.
Keywords :
electro-optical devices; lithium compounds; niobium compounds; optical focusing; optical waveguides; parallel plate waveguides; EO crystal; LiNbO3; THz EO sampling efficiency; THz radiation; electro-optic sampling efficiency; enhancement factor; focusing effect; metallic tapered parallel plate waveguide; optical waveguide; Crystals; Electrooptical waveguides; Optical beams; Optical sensors; Probes; Ultrafast optics;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on
Conference_Location :
Wollongong, NSW
Print_ISBN :
978-1-4673-1598-2
Electronic_ISBN :
2162-2027
DOI :
10.1109/IRMMW-THz.2012.6380389
