Title :
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
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;
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
DOI :
10.1109/ICIMW.2008.4665627
