We report on recording experiments of erasable information in magneto-optical amorphous layers on pregrooved discs. The recording and reading of information is done on a recorder provided with an AIGaAs laser and equipped for polarization-sensitive readout of the Kerr effect. The signal-to-noise ratio and the bit error rate of the recorded information have proved to be sufficient for half an hour of digital music according to the compact digital audio standard on a 12 cm diameter disc (equivalent to 400000 bits per mm2). With only slight modifications, the recorder can be used to read out normal compact disc records.
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is free for AES members and E-Library subscribers.