Title :
Magnetic field induced terahertz π-phase shift in photorefractive periodically poled LiNbO3 through optical rectification
Author :
Ma, Guohong ; Liu, Weiming ; Tang, Sing Hai
Author_Institution :
Dept. of Phys., Shanghai Univ., Shanghai, China
Abstract :
Magnetic field induced phase shift of terahertz wave in PPLN crystal was investigated with femtosecond pump-probe method. A pi phase shift occurs in an undoped PPLN with applied magnetic field reaches ~0.45 T, but in the case of MgO-doped PPLN crystal, THz phase shows magnetic field independence. The magnetic field induced pi-phase shift comes from the photorefractive effect in PPLN crystal.
Keywords :
lithium compounds; magnesium compounds; photorefractive effect; terahertz wave spectra; LiNbO3:MgO; femtosecond pump-probe method; optical rectification; photorefractive effect; pi phase shift; Laser beams; Laser excitation; Magnetic fields; Optical pulses; Optical pumping; Photorefractive effect; Probes; Pulse amplifiers; Pump lasers; Ultrafast optics;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5416-7
Electronic_ISBN :
978-1-4244-5417-4
DOI :
10.1109/ICIMW.2009.5324945
