Microstructure of a poled surface-relief grating and its electro-optic response.
The microstructure of a poled surface-relief grating of an azobenzene side-chain polymer film is investigated. From the in situ monitoring of diffraction efficiency and second-harmonic generation, as well as dynamic-contact electrostatic force microscopy images, the point group symmetry of C2nu is identified. The polarization-dependent electro-optic measurement of the reflected diffraction order further confirms the optically biaxial structure of the poled surface-relief grating.
Chang
Hye Jeong
HJ
Department of Physics, Ewha Womans University, Seoul 120-750, South Korea.
Kang
Boyoung
B
Choi
Hyunhee
H
Wu
J W
JW