laser wavelength: The smaller the wavelength, the smaller the details the laser beam can "read" and the greater the storage density and thus the capacity of the data carrier. The wavelength is measured in nm (nanometers, 1 nm = 1 millionth of a millimeter). A wavelength of less than 650 nm is achieved with red light. With a blue-violet light, like he does Blu-Raydiscs is used, a wavelength of 405 nm is achieved.
