Title :
Terahertz nonlinear transmission spectroscopy of amino-acid microcrystals
Author :
Jewariya, Mukesh ; Nagai, Masaya ; Tanaka, Koichiro
Author_Institution :
Dept. of Phys., Kyoto Univ., Kyoto, Japan
Abstract :
We experimentally demonstrate terahertz (THz) nonlinear transmission spectroscopy of the amino acids microcrystals using intense mono-cycle THz pulse. Absorptions of intermolecular vibration mode are saturated with incident electric field amplitude. This is due to the rearrangements of population distributed in an anharmonic intermolecular vibration potential. This will open a new THz pump probe spectroscopy in complex organic materials for mode assignments.
Keywords :
anharmonic lattice modes; organic compounds; terahertz wave spectra; vibrational modes; THz pump probe spectroscopy; amino-acid microcrystals; anharmonic intermolecular vibration potential; incident electric field amplitude; intermolecular vibration mode; terahertz nonlinear transmission spectroscopy; Frequency; Laser excitation; Laser modes; Optical pulse generation; Optical pulses; Power generation; Pulse measurements; Pump lasers; Signal generators; Spectroscopy;
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.2009.5324717
