High density optical storage property of cyanine dye by green laser

A cyanine dye polymer film is made by spin-coated method,and the property of the film is studied with green light recording system with NA of 0.65 at room temperature.In the range of 420nm～590nm the film shows two strong absorption peaks,which means that this film can be used as optical storage material matching the recording system with the laser source of 532nm.A result of about 600nm recording line with 21% reflectivity contrast is obtained at 15mW laser power with the 1m/s recording velocity.