標題: Polarization analyses of readout signals in phase change material incorporating a Solid Immersion Lens (SIL)
作者: Tien, CH
Lai, YC
Shieh, HPD
光電工程學系
Department of Photonics
關鍵字: Solid Immersion Lens (SIL);near-field recording;NA (numerical aperture);polarization;vector diffraction
公開日期: 2000
摘要: 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.
URI: http://hdl.handle.net/11536/19210
http://dx.doi.org/10.1117/12.390502
ISBN: 0-8194-3720-4
ISSN: 0277-786X
DOI: 10.1117/12.390502
期刊: OPTICAL STORAGE AND OPTICAL INFORMATION PROCESSING
Volume: 4081
起始頁: 155
結束頁: 162
顯示於類別:會議論文


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