Light-induced Difference Terahertz Spectroscopy.
Visible/near-infraredlaser-induced difference spectroscopy basedon a time-domain terahertz system has beendeveloped, and used to study copperpathancyonine. We find that the absorptionpeak of this molecule at 1.08 THz changessignificantly under 790 nm laserexcitation, suggesting that we haveobserved the first evidence of vibrationalmode changes in the THz range induced byvisible/near-infrared light.
Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge, CB3 0HE UK.
Y C
YC
Shen
P C
PC
Upadhya
A G
AG
Davies
E H
EH
Linfield
Difference spectroscopy; pathancyonine; terahertz spectroscopy; time-domain