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도메인 확장형 광자기 디스크의 온도분포 및 재생신호 시뮬레이션
양재남(Jaenam Yang),조순철(Soonchul Jo) 한국자기학회 2004 韓國磁氣學會誌 Vol.14 No.2
Read out signal and temperature distribution of magnetic amplifying magnetooptical disk were studied. Temperature distribution of recording layer and adjacent layers were calculated when the disk was at rest. Mark size, length and location were simulated from a chain of recording beam pulses. In addition, signal amplitude depending on the shape of the marks, readout signals from the recording layer and amplified marks of the readout layer, were simulated. Simplified thermal conduction model was used to calculate the temperature distribution of recording and adjacent layers as a function of time as well as to calculate the mark size, length and location. Readout signal was calculated by the convolution of the disk reflectivity and the Gaussian beam intensity. Readout signal from the mark in the readout layer amplified to the size of the laser beam turned out to be twice as large as the signal from the crescent shaped mark in the recording layer.