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25 October 2004 New optical disk system of ultra high density and high data rate using 2D VCSEL array: nanofabrication for evanescent light enhancement by surface plasmon polariton
Kenya Goto, Yoshiki Masuda, Takayuki Kirigaya, Kazuma Kurihara, Satoshi Mitsugi
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Proceedings Volume 5602, Optomechatronic Sensors, Actuators, and Control; (2004) https://doi.org/10.1117/12.581786
Event: Optics East, 2004, Philadelphia, Pennsylvania, United States
Abstract
Higher density optical disk system of super parallel optical heads using a two dimensional VCSEL array are described for the higher data transfer rate and technological capability. Optical heads of the VCSEL array and microlens array play a key role to get higher evanescent light from a small aperture for the optical disk system, of which 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 10μW from the 100nm probe aperture using a VCSEL 1mW 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 metal fine grating fabrication method to get evanescent light wave resonantly enhancement has been studied with a FDTD simulation result.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Kenya Goto, Yoshiki Masuda, Takayuki Kirigaya, Kazuma Kurihara, and Satoshi Mitsugi "New optical disk system of ultra high density and high data rate using 2D VCSEL array: nanofabrication for evanescent light enhancement by surface plasmon polariton", Proc. SPIE 5602, Optomechatronic Sensors, Actuators, and Control, (25 October 2004); https://doi.org/10.1117/12.581786
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KEYWORDS
Vertical cavity surface emitting lasers
Metals
Head
Near field optics
Gold
Near field
Microlens array
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