High Density Direct Read after Write (DRAW) Recording
- 1 April 1977
- journal article
- research article
- Published by Taylor & Francis in Optica Acta: International Journal of Optics
- Vol. 24 (4) , 427-431
- https://doi.org/10.1080/713819561
Abstract
Burning holes into a thin layer of bismuth film is the basis for the development of a large capacity store for DRAW operation (2 × 1010 bits). In 600 Å bismuth films deposited on a rotating disc, storage is achieved at a data rate of 1 Mbit/s using a He-Ne laser source. Reading the record in transmission, an optical contrast ratio of 2–3 was observed. Storage densities close to 108 bits/cm2 are achievable.Keywords
This publication has 2 references indexed in Scilit:
- A Review of the MCA Disco-Vision SystemJournal of the SMPTE, 1974
- Micromachining and Image Recording on Thin Films by Laser BeamsBell System Technical Journal, 1971