Halbach array type focusing actuator for small and thin optical data storage device

2004 ◽  
Author(s):  
Sung Q. Lee ◽  
Kang-Ho Park ◽  
Mun Chul Paek
Keyword(s):  
Data Storage ◽  
Optical Data Storage ◽  
Optical Data ◽  
Storage Device ◽  
Array Type ◽  
Halbach Array

Nondestructive up-conversion readout in Er/Yb co-doped Na0.5Bi2.5Nb2O9-based optical storage materials for optical data storage device applications

2017 ◽  
Vol 5 (15) ◽  
pp. 3838-3847 ◽  
Author(s):  
Qiwei Zhang ◽  
Shuangshuang Yue ◽  
Haiqin Sun ◽  
Xusheng Wang ◽  
Xihong Hao ◽  
...  
Keyword(s):  
Data Storage ◽  
Optical Data Storage ◽  
Photon Absorption ◽  
Optical Data ◽  
Storage Device ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Device Applications ◽  
Co Doped ◽  
Absorption Mode

Er/Yb co-doped NBN photochromics exhibit excellent luminescence readout capability by using a two-photon absorption mode with extremely low destruction on information recording.

scholarly journals Five-Dimensional Optical Data Storage Based on Ellipse Orientation and Fluorescence Intensity in a Silver-Sensitized Commercial Glass

Micromachines ◽  
2020 ◽  
Vol 11 (12) ◽  
pp. 1026
Author(s):  
Chang-Hyun Park ◽  
Yannick Petit ◽  
Lionel Canioni ◽  
Seung-Han Park
Keyword(s):  
Data Storage ◽  
Fluorescence Intensity ◽  
Optical Data Storage ◽  
Optical Data ◽  
Storage Device ◽  
Storage Unit ◽  
Recording Process ◽  
Laser Focus ◽  
Direct Laser ◽  
Commercial Glass

Five-dimensional (5D) recording and decoding is demonstrated by using femtosecond direct laser writing in a silver-containing commercial glass. In particular, laser intensities and ellipse orientations generated by anamorphic focusing are employed to produce 5D data storage unit (3D for XYZ, 1D for the orientation of the elliptically-shaped data storage unit and 1D for its fluorescence intensity). In the recording process, two different images of a 4-bit bitmap format were simultaneously embedded in the medium by multiplexing the elliptical orientation of the laser focus and its intensity so as to access oriented elliptical patterns with independent fluorescence intensity. In the decoding process, two merged original images were successfully reconstructed by comparing each data storage unit with a fabricated calibration matrix of 16 × 16 levels for elliptic orientations and fluorescence intensities. We believe this technique can be applied to semi-permanent high-density data storage device.

One-pot synthesis of a mechanochromic AIE luminogen: implication for rewritable optical data storage

2016 ◽  
Vol 4 (39) ◽  
pp. 9287-9293 ◽  
Author(s):  
Jingqi Han ◽  
Jingyan Sun ◽  
Yaping Li ◽  
Yuai Duan ◽  
Tianyu Han
Keyword(s):  
Data Storage ◽  
Fatigue Resistance ◽  
Optical Data Storage ◽  
Optical Data ◽  
Storage Device ◽  
One Pot ◽  
One Pot Synthesis ◽  
High Fatigue

A new prototype of a rewritable optical data storage device with high fatigue resistance is designed based on a mechanochromic AIE luminogen.

scholarly journals Structural and optical properties of amorphous Si–Ge–Te thin films prepared by combinatorial sputtering

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
C. Mihai ◽  
F. Sava ◽  
I. D. Simandan ◽  
A. C. Galca ◽  
I. Burducea ◽  
...  
Keyword(s):  
Optical Properties ◽  
Data Storage ◽  
Optical Sensors ◽  
Material Selection ◽  
Functional Materials ◽  
Stability Study ◽  
Optical Data Storage ◽  
Optical Data ◽  
Structural And Optical Properties ◽  
Topological Constraint

AbstractThe lack of order in amorphous chalcogenides offers them novel properties but also adds increased challenges in the discovery and design of advanced functional materials. The amorphous compositions in the Si–Ge–Te system are of interest for many applications such as optical data storage, optical sensors and Ovonic threshold switches. But an extended exploration of this system is still missing. In this study, magnetron co-sputtering is used for the combinatorial synthesis of thin film libraries, outside the glass formation domain. Compositional, structural and optical properties are investigated and discussed in the framework of topological constraint theory. The materials in the library are classified as stressed-rigid amorphous networks. The bandgap is heavily influenced by the Te content while the near-IR refractive index dependence on Ge concentration shows a minimum, which could be exploited in applications. A transition from a disordered to a more ordered amorphous network at 60 at% Te, is observed. The thermal stability study shows that the formed crystalline phases are dictated by the concentration of Ge and Te. New amorphous compositions in the Si–Ge–Te system were found and their properties explored, thus enabling an informed and rapid material selection and design for applications.

scholarly journals Optical Isomerization and Photo-Patternable Properties of GeO2/Ormosils Organic-Inorganic Composite Films Doped with Azobenzene

Coatings ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 818
Author(s):  
Xuehua Zhang ◽  
Qian Wang ◽  
Shun Liu ◽  
Wei Zhang ◽  
Fangren Hu ◽  
...  
Keyword(s):  
Optical Waveguide ◽  
Data Storage ◽  
Optical Switching ◽  
Sol Gel ◽  
Composite Films ◽  
Optical Data Storage ◽  
Optical Data ◽  
Single Chip ◽  
Coating Method ◽  
Inorganic Composite

GeO2/organically modified silane (ormosils) organic-inorganic composite films containing azobenzene were prepared by combining sol-gel technology and spin coating method. Optical waveguide properties including the refractive index and thickness of the composite films were characterized by using a prism coupling instrument. Surface morphology and photochemical properties of the composite films were investigated by atomic force microscope and Fourier transform infrared spectrometer. Results indicate that the composite films have smooth and neat surface, and excellent optical waveguide performance. Photo-isomerization properties of the composite films were studied by using a UV–Vis spectrophotometer. Optical switching performance of the composite films was also studied under the alternating exposure of 365 nm ultraviolet light and 410 nm visible light. Finally, strip waveguides and microlens arrays were built in the composite films through a UV soft imprint technique. Based on the above results, we believe that the prepared composite films are promising candidates for micro-nano optics and photonic applications, which would allow directly integrating the optical data storage and optical switching devices onto a single chip.

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