| Autor: |
Hosaka, Makoto, Ishii, Toshiki, Tanaka, Asato, Koga, Shogo, Hoshizawa, Taku |
| Zdroj: |
Japanese Journal of Applied Physics; September 2013, Vol. 52 Issue: 9 p09LD01-09LD05, 5p |
| Abstrakt: |
We developed an iterative method for optimizing the exposure schedule to obtain a constant signal-to-scatter ratio (SSR) to accommodate various recording conditions and achieve high-density recording. 192 binary images were recorded in the same location of a medium in approximately $300\times 300$ μm2using an experimental system embedded with a blue laser diode with a 405 nm wavelength and an objective lens with a 0.85 numerical aperture. The recording density of this multiplexing corresponds to 1 Tbit/in.2. The recording exposure time was optimized through the iteration of a three-step sequence consisting of total reproduced intensity measurement, target signal calculation, and recording energy density calculation. The SSR of pages recorded with this method was almost constant throughout the entire range of the reference beam angle. The signal-to-noise ratio of the sampled pages was over 2.9 dB, which is higher than the reproducible limit of 1.5 dB in our experimental system. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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