Title :
Surface nonlinear optical spectroscopic studies of polymers
Author_Institution :
Dept. of Phys., California Univ., Berkeley, CA, USA
Abstract :
As a second-order nonlinear optical process, sum-frequency generation (SFG) is forbidden in media with inversion symmetry but allowed at surfaces or interfaces. It can therefore be used effectively as a surface probe. Scanning the infrared input over surface vibrational resonance yields a surface vibrational spectrum. Analysis of the spectra obtained with different input/output polarization combinations provides information about orientations of the different molecular groups at the surface
Keywords :
optical frequency conversion; resonant states; spectroscopy; surface phenomena; symmetry; vibrational states; infrared input scanning; input/output polarization combinations; interfaces; inversion symmetry; molecular groups; polymers; second-order nonlinear optical process; sum-frequency generation; surface; surface nonlinear optical spectroscopic studies; surface probe; surface vibrational resonance; surface vibrational spectrum; Biomedical optical imaging; Nonlinear optics; Optical films; Optical materials; Optical polymers; Optical sensors; Polarization; Polymer films; Spectroscopy; Vibrations;
Conference_Titel :
LEOS '99. IEEE Lasers and Electro-Optics Society 1999 12th Annual Meeting
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-5634-9
DOI :
10.1109/LEOS.1999.813536
