Servo Study of Radially Polarized Beam in High Numerical Aperture Optical Data Storage System

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概要

• 論文の詳細を見る

• In this paper, we employed full vector diffraction treatment to study the dependence of the servo signals to the doughnut-shaped focus radiation of radial polarization, which provides a smaller spot size than linear polarization, and the resistance to the primary aberrations in a numerical aperture $(\mathrm{NA})=1.0$ optical data storage system. Compared with linear polarization, at strong focusing, a radially polarized beam leads to 14% asymmetry reduction in the linear range of the focus-error signal (FES) curve and to at least 56% variation reduction in crosstalk in a weakly aberrated system. These characteristics make radial polarization a potential candidate for next-generation high-density optical systems.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2007-06-30

著者

• Lan Tzu-Hsiang

  Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 300-10, Taiwan

• Tien Chung-Hao

  Department of Photonics and Display Institute, National Chiao Tung Univeristy, Hsinchu, Taiwan, 30010, R.O.C.

• Tien Chung-Hao

  Department of Photonics and Display Institute, National Chiao Tung University, Hsinchu City 300-10, Taiwan

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• Double-Corrugated C-Shaped Aperture for Near-Field Recording
• Study on Focusing Mechanism of Radial Polarization with Immersion Objective
• Design of Catadioptric Lens with Servo Optical Mechanism in Holographic Recording System

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