Abstract In this paper, we discuss the phase-change recording at a short-wavelength (514nm) and a high numerical aperture (0.85). Effects of recording power and pulse width on the size of the recording marks are studied. The minimum recording mark with a length of approximately 220nm has been observed. The capacity of about 17GB for a single-layer disc of a 12cm diameter can be obtained. The maximum carrier-to-noise ratio reaches 45dB at a writing power of 13--14mW.
Received: 29 May 2002
Revised: 12 September 2002
Accepted manuscript online:
Fund: Project supported by the Foundation of the Shanghai Applied Physics Centre, and the National Natural Science Foundation of China (Grant No 59832060).
Cite this article:
Liu Bo (刘 波), Ruan Hao (阮 昊), Gan Fu-Xi (干福熹) A study on the short-wavelength and high-numerical-aperture phase-change recording 2003 Chinese Physics 12 107
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