Amplitude and Phase Apodization Caused by Focusing Light Through an Evanescent Gap in SIL Recorders
ARIZONA UNIV TUCSON OPTICAL SCIENCES CENTER
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High numerical apertureNA vector diffraction theory is used to analyze a near field optical system using a solid immersion lens SIL. The amplitude and phase of the transmitted light through the system changes as a function of the air gap height as well as indices of refraction, incident angle, etc. We call these amplitude apodization and phase apodization. The characteristics of those are done using supergaussian form. The effects of amplitude and phase apodization on irradiance are investigated for various index of refraction and air gap height.
- Computer Systems
- Electricity and Magnetism