An analysis of different polyvinyl alcohol films dyed with Malachite Green is presented. Absorbance and diffraction efficiency of holographic gratings are compared, taking as a parameter the molecular weight and hydrolysis degree of the polymer. It is observed that, using the same dye concentration, the absorption coefficient of the films increases as the molecular weight increases. The absorbance of these plates can be modified when exposed to UV light. In addition, it is found that for holographic recording there is an optimal dye–polymer system film.
© 2006 Optical Society of America
Original Manuscript: February 13, 2006
Revised Manuscript: March 17, 2006
Manuscript Accepted: March 19, 2006
Cristina Solano, Geminiano Martinez-Ponce, and Carlos Castañeda, "Dyed-polyvinyl alcohol films: molecular weight and hydrolysis degree influence on optical recording," Appl. Opt. 45, 5207-5211 (2006)