Definition of dye-polymer optical disc

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Photonics Spectra BioPhotonics Vision Spectra Virtual Events & Summits Educational Institutions Add/Update Your Listing Exhibitor Listing Portal Become an Exhibitor Buyers' Guide Print Edition Marketplace Help

Photonics Dictionary

dye-polymer optical disc: A type of erasable data storage device that uses a medium deposited on the disc in two layers, each dyed to absorb a different wavelength of laser light. To record data, the lower layer is heated by a laser so that it expands and forms bumps representing bits of information that can be read by the same laser at a lower temperature. Erasure is accomplished by heating the upper layer at the second wavelength until it expands and displaces the bumps.

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