Second harmonic generation

Sum frequency generation (SFG) spectra of cotton cellulose fibers were successfully obtained with IR wavenumber from 2800 to 3400 cm-1 . The spectra showed the two peaks at 2840 cm-1 and 2941 cm-1 assigned to symmetric and asymmetric CH2 stretching modes, respectively. There was also a peak obtained at wavenumber 2959 cm-1 assigned to the overtone of H-O-C bending at Fermi resonance with 2941 cm-1 peak.

7p thithizone 16-07-2019 4 1   Download