Title :
Terahertz pulse shaping based on difference frequency mixing of two orthogonally polarized pulses in ZnTe, GaAs and GaP
Author :
Li, D.H. ; Ma, J.J. ; Zhou, W. ; Ju, Z.P. ; Qu, C. ; Li, Q.K.
Author_Institution :
Terahertz Sci. & Technol. Res. Center, Shandong Univ. of Sci. & Technol., Qingdao, China
Abstract :
This paper presents a theoretical investigation on a THz pulse shaping method based on difference frequency generation of two orthogonally polarized optical pulses. This scheme is effective in controlling the amplitude and polarization of generated THz pulse. The power spectrum from ZnTe, GaAs and GaP crystals is compared when considering crystal absorption and phase mismatching condition. Simulation illustrates that the highest spectral amplitude is obtained in 0.5mm ZnTe and broadband THz pulse can be got in 0.1mm GaP crystal.
Keywords :
II-VI semiconductors; III-V semiconductors; gallium arsenide; light absorption; light polarisation; optical frequency conversion; optical phase matching; optical pulse generation; optical pulse shaping; semiconductor lasers; zinc compounds; GaAs; GaP; ZnTe; amplitude control; crystal absorption; difference frequency generation; difference frequency mixing; orthogonally polarized pulses; phase mismatching; polarization control; power spectrum; spectral amplitude; terahertz pulse shaping; Absorption; Crystals; Gallium arsenide; Nonlinear optics; Optical pulses; Pulse shaping methods; 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.2012.6380123
