Bartholomeusz B J, Genova D J, Stinson D G
Appl Opt. 1990 Jul 10;29(20):3030-9. doi: 10.1364/AO.29.003030.
Read and bias power levels are capable of noticeably altering the response of thermomagnetooptic recording materials. The heating caused by the read power can decrease signal levels due to the temperature dependence of the polar Kerr rotation. Preheating caused by bias power levels also influences media sensitivity and responses during the writing process. Increased bias levels reduce the optimum recording power and increase the severity of mark length variations caused by write power fluctuations. Simple predictive expressions were derived to describe the influence of bias and read power levels during the mark formation and readout processes. The predicted results were in good qualitative and quantitative agreement with experimental observations.
读取功率和偏置功率水平能够显著改变热磁光记录材料的响应。由于极化克尔旋转的温度依赖性，读取功率引起的加热会降低信号水平。偏置功率水平引起的预热也会影响写入过程中的介质灵敏度和响应。增加偏置水平会降低最佳记录功率，并增加由写入功率波动引起的标记长度变化的严重程度。推导了简单的预测表达式来描述标记形成和读出过程中偏置和读取功率水平的影响。预测结果与实验观察结果在定性和定量上都有很好的一致性。
