Experiments of noble optical floppy disk drive using phase-change optical medium and quasi-near-field optical head

Kenya Goto; Young Joon Kim; Yutaka Hasegawa

doi:10.1117/12.997609

28 June 1999 Experiments of noble optical floppy disk drive using phase-change optical medium and quasi-near-field optical head

Kenya Goto, Young Joon Kim, Yutaka Hasegawa

Author Affiliations +

Proceedings Volume 3864, Joint International Symposium on Optical Memory and Optical Data Storage 1999; 38640K (1999) https://doi.org/10.1117/12.997609
Event: Optical Data Storage, 1999, Kauai, HI, United States

Abstract

A lensless optical floppy disk drive which does’t have any optical lens between the optical head and the phase change (PC) type optical floppy disk medium have been developed. The head is a contact type, which had already been adopted in higher density magnetic floppy disk drives such as the LS120. The main point of this optical head is an antireflection (AR) coating technology of very low reflectivity on an output facet of a low cost laser diode which is as same as the laser diode installed in a commercial CD player. The AR coat of the laser diode and also the optical floppy disk medium are deposited on to both laser diode facet and to thin polyimid floppy disk substrate using an electron cyclotron resonance sputtering (ECR) method.

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Kenya Goto, Young Joon Kim, and Yutaka Hasegawa "Experiments of noble optical floppy disk drive using phase-change optical medium and quasi-near-field optical head", Proc. SPIE 3864, Joint International Symposium on Optical Memory and Optical Data Storage 1999, 38640K (28 June 1999); https://doi.org/10.1117/12.997609

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