Ontology highlight
ABSTRACT:
SUBMITTER: Mertiri A
PROVIDER: S-EPMC4270413 | biostudies-literature | 2014 Aug
REPOSITORIES: biostudies-literature
ACS photonics 20140718 8
We report on the mid-infrared nonlinear photothermal spectrum of the neat liquid crystal 4-octyl-4'-cyanobiphenyl (8CB) using a tunable Quantum Cascade Laser (QCL). The nonequilibrium steady state characterized by the nonlinear photothermal infrared response undergoes a supercritical bifurcation. The bifurcation, observed in heterodyne two-color pump-probe detection, leads to ultrasharp nonlinear infrared spectra similar to those reported in the visible region. A systematic study of the peak spl ...[more]