Laser feedback noise measurement with close-loop servo control for the optical information storage system

2006 ◽  
Author(s):  
Hsi-Fu Shih ◽  
De-Wei Hsu
Keyword(s):  
Storage System ◽  
Noise Measurement ◽  
Information Storage ◽  
Servo Control ◽  
Optical Information ◽  
Optical Information Storage

NaMgF 3 :Tb 3+ @NaMgF 3 Nanoparticles Containing Deep Traps for Optical Information Storage

2021 ◽  
pp. 2100624
Author(s):  
Yikuang Wang ◽  
Dunrong Chen ◽  
Yixi Zhuang ◽  
Wenjing Chen ◽  
Hangyu Long ◽  
...  
Keyword(s):  
Information Storage ◽  
Optical Information ◽  
Deep Traps ◽  
Optical Information Storage

Ferrimagnetic Cobalt Ferrite Films Prepared by the Sol-Gel Process

1993 ◽  
Vol 313 ◽  
Author(s):  
Eva M. Wong ◽  
Haixing Zheng ◽  
John D. Mackenzie ◽  
T. Tsuchiya
Keyword(s):  
Remanent Magnetization ◽  
Cobalt Ferrite ◽  
Amorphous Film ◽  
Heat Treating ◽  
Fused Silica ◽  
Information Storage ◽  
Degree Of Crystallinity ◽  
Optical Information ◽  
Ferrite Films ◽  
Optical Information Storage

ABSTRACTFerrimagnetic oxide films have been shown to have potential for use as Magneto-optical information storage Materials. Cobalt ferrite films are particularly interesting for magneto optical information storage due to their high magneto optical rotation [1]. In this work, synthesized soluble cobalt (II) and iron (III) Methoxyethoxides were mixed in stoichiometric ratios for use as Co and Fe precursors in the preparation of CoFe2O4ferrimagnetic films. The decomposition of the precursors was characterized by thermogravimetric analysis.CoFe2O4 films were prepared by the dip coating technique using fused silica substrates. These films were then heat treated at temperatures ranging from 200°C to 600°C to study the transformation from an amorphous film to a crystalline film as determined by x-ray diffraction. The Magnetic hysteresis behavior of the films as a function of heat treating temperature and hence crystallinity was also studied. As a general trend, films having a greater degree of crystallinity exhibited larger values of saturation magnetization and remanent Magnetization. The amorphous film was found to exhibit the highest coercive field, but low values of saturation and remanent Magnetization. The effect of heat treating under the influence of a magnetic field of 1.88 kÖe was found to enhance crystallization only slightly and had very little effect on the magnetic properties of the film.

scholarly journals Side-chain Liquid Crystalline Polyesters for Optical Information Storage

1996 ◽  
Vol 7 (9) ◽  
pp. 768-776 ◽  
Author(s):  
P. S. Ramanujam ◽  
Christian Holme ◽  
Søren Hvilsted ◽  
Marianne Pedersen ◽  
Fulvio Andruzzi ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Information Storage ◽  
Side Chain ◽  
Optical Information ◽  
Optical Information Storage

Study on the life test of optical information storage materials

2021 ◽  
Author(s):  
Guangwei Zhang ◽  
Jihong Zheng ◽  
Zhaoxia Han ◽  
Chunxian Tao
Keyword(s):  
Information Storage ◽  
Optical Information ◽  
Life Test ◽  
Storage Materials ◽  
Optical Information Storage

Design and characterization of Eu2+-doped Ba4Si6O16 photostimulated phosphor for optical information storage

2020 ◽  
Vol 227 ◽  
pp. 117556 ◽  
Author(s):  
Lite Zhao ◽  
Tianpeng Liu ◽  
Hongxiang An ◽  
Hongwei Wang ◽  
Kangming Lv ◽  
...  
Keyword(s):  
Information Storage ◽  
Optical Information ◽  
Optical Information Storage
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