Terahertz radiation generation in waveguide partially filled with nonlinear crystal

Author

Nikoghosyan, A.S. ; Zinov´ev, N.N. ; Chamberlain, J.M. ; Dudley, R.A. ; Martirosyan, R.M.

Author_Institution

Dept. of Microwave Eng., Yerevan State Univ., Yerevan

fYear

2008

fDate

15-19 Sept. 2008

Firstpage

1

Lastpage

2

Abstract

We report on the effective generation pulse of THz radiation via optical rectification of femtosecond laser pulses in a nonlinear crystal. By placing the same nonlinear crystal in the free space and then inside the waveguide the phase-matching and consequently time and spectral features of the emitted THz field are changed. The rise of conversion efficiency in the order of magnitude has been obtained in waveguide structures partially filled with LiNbO₃ crystal.

Keywords

high-speed optical techniques; lithium compounds; optical frequency conversion; optical materials; optical phase matching; optical waveguides; submillimetre wave generation; LiNbO₃; conversion efficiency; femtosecond laser pulses; nonlinear crystal; optical rectification; optical waveguide; phase matching; terahertz radiation generation; Frequency conversion; Nonlinear optics; Optical pulse generation; Optical waveguide components; Optical waveguides; Stimulated emission; Ultrafast optics; Waveguide components; Waveguide lasers; Waveguide transitions;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter and Terahertz Waves, 2008. IRMMW-THz 2008. 33rd International Conference on

Conference_Location

Pasadena, CA

Print_ISBN

978-1-4244-2119-0

Electronic_ISBN

978-1-4244-2120-6

Type

conf

DOI

10.1109/ICIMW.2008.4665627

Filename

4665627