Title :
Terahertz radiation from antiferromagnetic MnO
Author :
Nishitani, Junichi ; Nagashima, Takeshi ; Hangyo, Masanori
Author_Institution :
Inst. of Laser Eng., Osaka Univ., Suita, Japan
Abstract :
We have observed terahertz radiation from antiferromagnetic MnO excited by femtosecond laser pulses. The oscillations following the main pulse are radiation from optically excited antiferromagnetic magnons. The origin of the main pulse radiation can be attributed to second-order nonlinear optical effects in bulk and/or at surface with antiferromagnetic spin order.
Keywords :
antiferromagnetic materials; high-speed optical techniques; magnons; manganese compounds; nonlinear optical susceptibility; terahertz waves; MnO; antiferromagnetic spin order; femtosecond laser pulses; optically excited antiferromagnetic magnons; oscillations; pulse radiation; second-order nonlinear optical effects; terahertz radiation; Nonlinear optics; Optical pulses; Optical pumping; Temperature dependence; Ultrafast optics;
Conference_Titel :
Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2011 36th International Conference on
Conference_Location :
Houston, TX
Print_ISBN :
978-1-4577-0510-6
Electronic_ISBN :
2162-2027
DOI :
10.1109/irmmw-THz.2011.6105017
