Title :
Formation of the spontaneous surface relief grating under pulsed exposure
Author :
Ahmadi-Kandjani, Sohrab ; Mazaheri, Leyla
Author_Institution :
Res. Inst. for Appl. Phys. & Astron., Univ. of Tabriz, Tabriz, Iran
Abstract :
Formation of the spontaneous surface relief grating under pulsed exposure with different pulse widths and repetition rates are studied. We used a low power diode laser with the wavelength of λ= 532nm as pump beam at normal incidence to the surface of azo-polymer film. The wavelength of pump beam is far from the maximum of absorption spectrum. Spontaneous surface relief grating with grating pitch of ~1383nm was formed.
Keywords :
absorption coefficients; diffraction gratings; optical films; optical polymers; optical pumping; polymer films; absorption spectrum; azo-polymer film; grating pitch; laser pulse widths; low power diode laser; pulse repetition rates; pulsed exposure; pump beam; spontaneous surface relief grating; wavelength 532 nm; Diffraction; Gratings; Laser beams; Measurement by laser beam; Optical surface waves; Surface emitting lasers; Surface topography; Spontaneous surface relief grating; azopolymer; mass transport; photoisomerization; pulsed exposure; thin film;
Conference_Titel :
Transparent Optical Networks (ICTON), 2011 13th International Conference on
Conference_Location :
Stockholm
Print_ISBN :
978-1-4577-0881-7
Electronic_ISBN :
2161-2056
DOI :
10.1109/ICTON.2011.5971178
