Pit Shape At Overwriting Of Thermal Magneto-Optical Recording

Kouichi Yamada; Isao Watanabe; Kunimaro Tanaka; Masanori Nakada

doi:10.1117/12.944620

2 June 1988 Pit Shape At Overwriting Of Thermal Magneto-Optical Recording

Kouichi Yamada, Isao Watanabe, Kunimaro Tanaka, Masanori Nakada

Proceedings Volume 0899, Optical Storage Technology and Applications; (1988) https://doi.org/10.1117/12.944620
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States

Abstract

The pit shape in magnetic field modulation recording is obtained from temperature profile which is calculated by using three dimensional thermal diffusion equations considering the movement of laser spot. The pit edge shape changes more elliptically with increasing disk velocity. The calculated frequency response does not degrade so much as the pit edge shape changes. The influence of disk velocity to the frequency response is less than that of recorded pit duty. These calculation method is useful for obtaining the recording characteristics of read-write channel, when various parameters are changed, without experiments.

Citation Download Citation

Kouichi Yamada, Isao Watanabe, Kunimaro Tanaka, and Masanori Nakada "Pit Shape At Overwriting Of Thermal Magneto-Optical Recording", Proc. SPIE 0899, Optical Storage Technology and Applications, (2 June 1988); https://doi.org/10.1117/12.944620

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