Objective lens used in multi-wavelength, multi-layer and multi-level optical storage

2002 ◽  
Author(s):  
Wenwei Mao ◽  
Guosheng Qi ◽  
Qiangning Hong ◽  
Duanyi Xu
Keyword(s):  
Optical Storage ◽  
Objective Lens ◽  
Multi Wavelength ◽  
Multi Level

Modulation Codes for Multi-wavelength and Multi-Level Photochromic Optical Recording Channel

2006 ◽  
Vol 45 (2B) ◽  
pp. 1090-1096 ◽  
Author(s):  
Hua Hu ◽  
Jianping Xiong ◽  
Duanyi Xu ◽  
Guosheng Qi
Keyword(s):  
Optical Recording ◽  
Modulation Codes ◽  
Multi Wavelength ◽  
Recording Channel ◽  
Multi Level

Multi-wavelength optical storage of diarylethene PMMA film

2003 ◽  
Vol 22 (3) ◽  
pp. 269-274 ◽  
Author(s):  
Haobo Guo ◽  
Fushi Zhang ◽  
Guo-shi Wu ◽  
Fan Sun ◽  
Shouzhi Pu ◽  
...  
Keyword(s):  
Optical Storage ◽  
Pmma Film ◽  
Multi Wavelength

New applications of near-field optical storage

1995 ◽  
Vol 53 ◽  
pp. 58-59
Author(s):  
G. S. Kino ◽  
S. Hayashi ◽  
I. Ichimura
Keyword(s):  
Refractive Index ◽  
Imaging System ◽  
Near Field ◽  
Spot Size ◽  
Optical Storage ◽  
Objective Lens ◽  
Near Field Imaging ◽  
New Type ◽  
New Applications ◽  
Field Imaging

Some time ago, we described a new type of near-field imaging system using the Solid Immersion Lens. A confocal microscope using this principle has demonstrated sub-100 nm resolution with visible light. In this paper, we will describe how this device is being applied to increasing the density of optical storage in CD ROMs and magneto-optical storage systems.The SIL is placed between the objective and the disk. As illustrated in Fig. 1(a), if the SIL is in the form of a hemisphere, rays enter it along its radii and converge at its center. If the refractive index of the SIL is n, the wavelength in this material is reduced by 1/n and consequently increases the effective NA of the objective lens by the refractive index n and decreases the spot size by 1/n. With this configuration, we were able to obtain good quality images of a grating with 100 nm gaps and strip widths.

SERS molecular-ruler based DNA aptamer single-molecule and its application to multi-level optical storage

2021 ◽  
pp. 133666
Author(s):  
Ning Feng ◽  
Lei Zhang ◽  
Jingjing Shen ◽  
Yanling Hu ◽  
Weibing Wu ◽  
...  
Keyword(s):  
Single Molecule ◽  
Optical Storage ◽  
Dna Aptamer ◽  
Molecular Ruler ◽  
Multi Level

Multi-level optical storage in photochromic diarylethene optical disc

2006 ◽  
Vol 28 (8-9) ◽  
pp. 904-908 ◽  
Author(s):  
Hua Hu ◽  
Jing Pei ◽  
Duanyi Xu ◽  
Guosheng Qi ◽  
Heng Hu ◽  
...  
Keyword(s):  
Optical Storage ◽  
Optical Disc ◽  
Multi Level

Optical Storage System for 0.4 mm Substrate Media Using 405 nm Laser Diode and Numerical Aperture 0.60/0.65 Objective Lens

2001 ◽  
Vol 40 (Part 1, No. 3B) ◽  
pp. 1604-1608
Author(s):  
Jungwan Ko ◽  
In Sik Park ◽  
Du-Seop Yoon ◽  
Chong-Sam Chung ◽  
Yoon-Gi Kim ◽  
...  
Keyword(s):  
Laser Diode ◽  
Storage System ◽  
Numerical Aperture ◽  
Optical Storage ◽  
Objective Lens
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