READOUT ENHANCEMENT BY MASKING FOR MAGNETO-OPTICAL STORAGE SYSTEMS
Original Publication Date: 1983-Aug-31
Included in the Prior Art Database: 2004-Apr-04
Xerox Disclosure Journal
As shown in relevant part in Figure 1, a large capacity magneto-optic storage system 11 typically requires a high numerical aperture lens 12 to focus a polarized read beam 13 to a small spot on the recording medium 14, so that densely packed data may be resolved. Data is detected by sensing the Kerr and/or Faraday polarization rotation the read beam 13 experiences when reflected from the recording medium 14. For example, such a system may include a beam splitter 15 to allow for through transmission of the incident read beam 13 and to redirect the reflected read beam 16 to a suitable detector 17.