A NEW METHOD OF MEASURING MICROSPOT PARAMETERS IN A MAGNETOOPTIC STORAGE-SYSTEM

On the basis of frequency analysis of magnetooptic signals, a new meth od to measure microsized spots is described. The method not only has h igh measuring accuracy and the ability of real-time measurement, but i t is also simple. In this paper, several mathematical models to examin e measuring error are developed. By theoretical analysis, for detectio n frequency of 0.6 MHz and spot radius of 0.5-mu-m, the relative error is within 0.032%.