| 摘要 |
<p>An optical recording structure (1) comprised of: an optically smooth and light reflecting substrate (2); the lower portion of a matrix material (3), selected from the group consisting of halocarbon polymers; a discontinuous stratum of light absorbing material (5), selected from the group consisting of low melting point semi-conductors, high melting point semi-conductors, high melting point refractory metals and common metals; the upper portion of the matrix material (4), selected from the same group as the lower matrix, and; if desired, a separate protective and hermetic sealing layer (17), and a dust defocusing overcoat (18). In operation, the stratum of light absorbing material (5), though discontinuous, is of sufficient density as to create an anti-reflective condition when the stratum (5) and the matrices (3 and 4) are tuned to the appropriate thicknesses. Upon irradiation by a focused laser beam of sufficient power, the stratum material (5) chemically reacts with the matrix material (3 and 4), destroying the interface (6) which allowed the anti-reflective condition to exist, thereby creating an optically transparent opening (9) which allows a read beam to reflect off the light reflecting substrate (2). Data is therefore recorded in the changes in the reflective condition of the recording structure (1). </p> |
