Compact confocal readout system for three-dimensional memories using a laser-feedback semiconductor laser.
We present a compact confocal readout system for three-dimensional optical memories that uses the thresholding property of a semiconductor laser for feedback light. The system has higher axial resolution than a conventional confocal system with a pinhole. We demonstrate readout results for data recorded in two recording layers with the developed system.
Nakano
Masaharu
M
Faculty of Engineering, Shizuoka University, Johoku, Hamamatsu 432-8561, Japan.
Kawata
Yoshimasa
Y