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

fYear

2012

fDate

23-28 Sept. 2012

Firstpage

1

Lastpage

2

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on

Conference_Location

Wollongong, NSW

ISSN

2162-2027

Print_ISBN

978-1-4673-1598-2

Electronic_ISBN

2162-2027

Type

conf

DOI

10.1109/IRMMW-THz.2012.6380389

Filename

6380389