Performance of a write-once multilayer optical disk that uses transparent recording material with an optical switching layer.
A volumetric optical disk that has multiple transparent films with optical switching layers is used as a recording medium to increase the number of recording layers. In the disk the optical switching layer is adapted to reduce decay of laser energy and increase reading and recording sensitivity. Well-defined marks of approximately 100-nm depth can be placed precisely on the transparent films by a focused laser beam. Writing and reading of a four-layer recordable disk, fabricated by molding and spin bonding, have been demonstrated experimentally. The volumetric disk can achieve a high recording capacity with conventional optical pickups.
Wu
Fung-Hsu
FH
Institute of Electro-Optical Engineering, National Chiao-Tung University, HsinChu, Taiwan 30010, China.
Shieh
Han-Ping D
HP
Huang
Der-Ray
DR
Milster
Tom D
TD