標題: Study on focusing mechanism of radial polarization with immersion objective
作者: Lan, Tzu-Hsiang
Tien, Chung-Hao
光電工程學系
顯示科技研究所
Department of Photonics
Institute of Display
關鍵字: radial polarization;immersion objective;marginal angle;refraction index;high numerical aperture;optical data storage system
公開日期: 1-Jul-2008
摘要: In this study, we employ vectorial diffraction to examine the focusing mechanism of radially polarized beams using an immersion objective with linear and circular polarized illuminations. Radial polarization features a sharp focus in a highnumerical-aperture (NA) system. The longitudinal component governing spot formation depends on the bending of the polarization vector rather than the immersion circumstance. As the marginal angle of the objective exceeds 64.16 and 71.81 degrees, the depolarization effect of the radially polarized beam enables a smaller spot than the linear and circular polarizations, respectively.
URI: http://dx.doi.org/10.1143/JJAP.47.5806
http://hdl.handle.net/11536/29331
ISSN: 0021-4922
DOI: 10.1143/JJAP.47.5806
期刊: JAPANESE JOURNAL OF APPLIED PHYSICS
Volume: 47
Issue: 7
起始頁: 5806
結束頁: 5808
Appears in Collections:Conferences Paper


Files in This Item:

  1. 000259550700011.pdf