Predictive aberration correction for multilayer optical data storage
Booth MJ., Schwertner M., Wilson T., Nakano M., Kawata Y., Nakabayashi M., Miyata S.
The recording of data in multiple layers, rather than a single layer, permits a significant increase in the capacity of optical data storage devices. However, focusing to the different layers introduces different amounts of depth-dependent aberrations. Variable aberration correction is therefore necessary to maintain diffraction-limited operation. We demonstrate the use of adaptive optics to predict and correct these aberrations for both the recording and read-out of such media. © 2006 American Institute of Physics.