垂直共振器面発光レーザの二次元アレイを用いた超高密度超高速の新しい光ディスク方式

概要

論文の詳細を見る
A higher density optical disk system of super parallel optical heads using a two dimensional VCSEL array for the higher data transfer rate and technological capability is described. Optical heads of the VCSEL array and microlens array play a key role in obtaining higher evanescent light from a small aperture for the optical disk system. The disk surface is coated with a lubricant and protective film on the flat recording medium in order to keep the gap between the super-parallel optical head and the disk surface within 20 nm. Higher throughput efficiency has been obtained in the near-field semiconductor optical probe array head. However, the obtained evanescent light power is about 10 μW from the 100 nm probe aperture using a VCSEL 1 mW laser output power, which is still not enough to write bits on the phase change optical disk medium. One solution for improvement of the writing power is to develop a special nano-fabricated corrugated thin metal film for higher throughput efficiency by surface plasmon polariton enhancement. A fine metal grating fabrication method to get evanescent light wave resonantly enhancement has been studied with a FDTD simulation result.
東海大学の論文
2005-03-31