Polarization analyses of readout signals in phase change material incorporating a Solid Immersion Lens (SIL)

Chung-Hao Tien*, Yin-Chieh Lai, Han Ping D. Shieh

*Corresponding author for this work

Research output: Contribution to journalConference article

Abstract

Comprehensive analyses based on rigorous vector diffraction theory have been presented to simulate the readout signal contrast using SIL in reading phase change recording disk. De-polarized reflected light (y-polarized from x-polarized incident beam) results in the reduction of total signal contrast, and becomes more obvious for high numerical aperture (NA) systems. Due to the signal degradation from de-polarized reflected light, filtering de-polarized light is applied to signal detection. The x-polarized contrast is a factor 1.0 to 1.35 higher than the conventional detection contrast (x+y polarized) at different gap widths, at a cost of 0 to 25 percent total intensity reduction.

Original languageEnglish
Pages (from-to)155-162
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4081
DOIs
StatePublished - 1 Jan 2000
EventOptical Storage and Optical Information Processing - Taipei, Taiwan
Duration: 26 Jul 200027 Jul 2000

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