Abstract

A reversible optical storage medium with more than 4 × 10⁴ write/erase cycles has been realized using a low-doped Te film of composition Te_96.8As_3.0Ge_0.2 encapsulated by a thick capping layer. A number of properties relevant to its storage application were also determined experimentally: the sensitivity range for writing (0.3–4 nJ) and erasing (34–40 nJ), the contrast of the readout signal (2:1), the limit for the erasing time (≈ 10 μsec), the bit permanence (3 weeks), and the readout signal behavior during writing and erasing.

© 1983 Optical Society of America

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