Polarization analyses of readout signals in phase change material incorporating a solid immersion lens (SIL)

Chung-Hao Tien; YinChieh Lai; Han-Ping D. Shieh

doi:10.1117/12.390502

6 July 2000 Polarization analyses of readout signals in phase change material incorporating a solid immersion lens (SIL)

Chung-Hao Tien, YinChieh Lai, Han-Ping D. Shieh

Author Affiliations +

Proceedings Volume 4081, Optical Storage and Optical Information Processing; (2000) https://doi.org/10.1117/12.390502
Event: Photonics Taiwan, 2000, Taipei, Taiwan

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 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.

Citation Download Citation

Chung-Hao Tien, YinChieh Lai, and Han-Ping D. Shieh "Polarization analyses of readout signals in phase change material incorporating a solid immersion lens (SIL)", Proc. SPIE 4081, Optical Storage and Optical Information Processing, (6 July 2000); https://doi.org/10.1117/12.390502

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