[OPTICAL REVIEW Vol. 6, No. 6 (1999) 486-488]
Near-Field Analysis of Micro-Aperture Surface Emitting Laser for High Density Optical Data Storage
Satoshi SHINADA,1 Fumio KOYAMA,1 Kouichi SUZUKI,1 Kenya GOTO2 and Kenichi IGA1
1Precision & Intelligence Laboratory, Tokyo Institute of Technology, 4259, Nagatsuta, Midori-ku, Yokohama, 226-8503 Japan, 2Tokai University, Nishino 317, Numazu, Shizuoka, 410-0321 Japan
(Received April 26, 1999; Accepted August 11, 1999)
We present the design of a novel metal micro-aperture surface emitting laser for tera byte optical data storage. The field distribution near micro-aperture is calculated by 2-dimensional finite element method, and it is shown that a spot size as narrow as 100 nm beyond a diffraction limit is obtainable.
Key words : optical memory, near field optics, semiconductor laser, VCSEL, 2-dimensional finite element method (2-D FEM)