高数值孔径下磁光多层膜系统的光学与热分析

With the development of information technology, much higher speed of processing and data transportation, much higher density of recording are demanded. In respect of information storage, there are many techniques which can overcome the limit of light diffraction to the increasing of storage density and increase the areal density greatly as well as another important technique called Multi-Wavelength Readout method for the Magnetic Multi-valued.Magneto-Optical (MWR-MMV MO) recording, which realizes 3 dimensional recording and.increases the recording capacity for a single MO disk.. These techniques make MO disk a very promising recording media and attract the interests of researchers all over the world. For 3 dimensional MO recording, both the recording and reading process depend strongly on the.distribution of temperature in the disk media. It is very important to know the temperature profile in the disk..In this project, we simulated the light intensity distribution、Joule loss profile and the temperature profile for the MO recording multilayer thin film stacks exposed with a laser beam,.and studied the influence caused by the changing of thickness and the optical constants of every layer of the multilayer system, and by using different substrate materials on the light intensity.distribution and temperature profiles. We also analyzed the noise characters of the magneto-optical signal caused by the thickness fluctuation of every layer. Results obtained from the above study.would be useful for the MO recording engineering. The project has been performed for one year and up to now two suits of software have been programmed for analyzing the magneto-optical.signal and temperature profile,respectively. Three papers have been presented in one international.conference and two national conferences, respectively. One paper has been accepted to published in Journal of infrared and millimeter waves and anthor two were submitted to SCI Journals.

研究聚集光束在磁光多层膜系统的光强度分布及焦耳热损失分布；以及不同膜层处于不同温度下的多层膜系统的光学及磁光效应。通过该研究对设计及制造3维磁光光盘具有重要的参技壑怠