Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2005-11-08
2005-11-08
Tran, Thang V (Department: 2653)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C369S013330
Reexamination Certificate
active
06963530
ABSTRACT:
A near-field optical apparatus having one or more solid state lasers and an aerodynamically shaped slider which comprise a single integrated, monolithic device fabricated from the same base semiconductor material. The monolithic optical head can be quickly and easily attached to the read arm of an optical read/write device without requiring attachment of separate laser elements, and without micropositioning or use of optical microscopy for positioning the lasers. The optical head comprising a single semiconductor substrate including a first region which defines a slider having an air bearing surface, and at least one second, laser region which defines a diode laser, with the diode laser having an emission face which is substantially co-planar with the air bearing surface. The semiconductor substrate preferably includes an active layer, a p-clad layer or reflective layer adjacent a first side of the active region, an n-clad layer or reflective layer adjacent a second side of the active layer, and an n-semiconductor layer adjacent the n-clad layer. A slider region of the semiconductor substrate includes an air bearing surface, adjacent the p-clad layer, which is aerodynamically structured and configured to define a slider. The integral lasers include a p-electrical contact adjacent to the p-clad layer and proximate to the laser emission face, and an n-electrical contact adjacent to the n-clad layer or an n-semiconductor layer. The laser mode is defined by oxidized or ion-diffusion regions associated with the p-clad layer or n-clad layer of the laser. A conductive via through the substrate allows electrical connection with the p-side contact to be achieved from the n-side of the substrate. The optical head is used in a near-field optical system with an optical medium having a phase change layer.
REFERENCES:
patent: 4460977 (1984-07-01), Shimada et al.
patent: 4860276 (1989-08-01), Ukita et al.
patent: 5105408 (1992-04-01), Lee et al.
patent: 5199090 (1993-03-01), Bell
patent: 5497359 (1996-03-01), Mamin et al.
patent: 5559773 (1996-09-01), Kentatsu et al.
patent: 5590110 (1996-12-01), Sato
patent: 5619371 (1997-04-01), Pontius
patent: 5625617 (1997-04-01), Hopkins et al.
patent: 5636190 (1997-06-01), Choi
patent: 5696372 (1997-12-01), Grober et al.
patent: 5729393 (1998-03-01), Lee et al.
patent: 5753941 (1998-05-01), Shin et al.
patent: 5894467 (1999-04-01), Wang
patent: 5917848 (1999-06-01), Claisse et al.
patent: 5978408 (1999-11-01), Thornton
patent: 6009064 (1999-12-01), Hajjar
patent: 6414911 (2002-07-01), Wilde et al.
patent: 6466410 (2002-10-01), Polycarpou et al.
patent: 6657927 (2003-12-01), Awano et al.
patent: 6762977 (2004-07-01), Gage et al.
patent: 10172166 (1980-06-01), None
patent: 10255302 (1980-09-01), None
patent: 63306546 (1988-12-01), None
patent: 10143895 (1998-05-01), None
patent: 10340468 (1998-12-01), None
patent: 10143895 (1999-10-01), None
patent: WO 99/01277 (1999-01-01), None
patent: WO 00/02199 (2000-01-01), None
Gradient-index Microlens formed by Ion-Beam Sputtering/Shimada, et al./Applied Optics. vol. 31, No. 25/'92.
Supersmall Flying Optical Head for Phase Change Recording Media/Ukita, et al./Applied Optics/vol. 28, No. 20/'89.
Applications of an Extremely Short Strong-Feedback Configuration of an exteranl-cavity Laser Diode System Fabricated w/GaAs-Based Interation Technology/Ukita, et al./vol. 33, No. 24/'94.
Proposal of Ultrahigh Density Optical Disk System Using a Vertical Cavity Surface Emitting Laser Array/ Kenya Goto/'98.
High Bit Rate and Tera Bytes Optical Memory in a Disk System/Kenya Goto/Spie vol. 3109./'97.
Electron Cyclotron Resonance (ECR) Sputter Antireflection Coatings on Laser Facets for Optical Memory Applications/Kim, et al./Jpn. J. Appl. Phys. vol.37/'98/pp. 2201-2202.
Near-Field Analysis of Micro-Aperture Surface Emitting Laser for High Density Optical Data Storage/Shinada, et al./Optical Review vol. 6, No. 6/' 99/ pp 486-488.
High-power Laser Light Source for Near-Field Optics and its Application to High-Density Optical Data Storage/Partove, et al./vol. 75, No. 11/'99.
Read/Write Performance and Reliability of a Flying Optical Head using a Monolithically Integrated LD-PD/Ukita, et al./vol. 30, No. 26/9-'91.
High-Density Optical Recording Using a Solid Immersion Lens/Lchimura, et al./vol. 36, No. 19/7-'97.
Flying High Read/Write Characteristics Using A Monolithically Integrated Laser Diode/Photodiode at a Wavelength of 1.3 μm/Ukita, et al./Spie Vo. 1499/'91.
An Optically Switched Laser (OSL) Head for Optical Recording/Ukita, et al./Spie vol. 1139/'89.
Readout Characteristics of Micro-Optical Head Operated in Bi-Stable Mode/Ukita, et al./vol. 26/'87.
An Optically Accessed Memory Using the Lippmann Process for Information Storage/Fleischer, et al./Government Contract No. AF33-657-11589-Aeronautical Systems/Chap 1, pp 1-30/'65.
Optical Near-Field Aperture Storage Technique for High Density, High Performance Data Storage/Spie vol. 3864/Afshin Partovi/7-'99.
Optical Near-Field Probe Action in Microdisk Laser with 0.12 Resolution/Yamada, et al./vol. 35 No. 3/'99.
Optical Near-Field Aperature Storage Technique (ONFAST)/Partovi, et al.
Experiments of Novel Optial Floppy Disk Drive Using Phase Change Optical Medium & Quasi-Near Field Optical Head/Goto, et al./Spie vol. 3864/7-'99.
Beam Converging Laser Diode by Taper Ridge Waveguide/Uenishi, et al./2-'88.
Optical Heads Based on Coupled-Cavity Laser Diode/Katagiri, et al./Spie vol. 2514.
Near-Field Optical Data Storage/Terris, et al./No. 2, Woodbury, NY, Us/1-'96.
Proposal of a Near Field Optical Head using a New Solid Immersion Mirror/Ueyanagi, et al./Part of the Joint International Symposium on Optical Memory & Optical Data Storage/7-'99.
Proposal of Optical Near-Field Probe Using Evanescent Field of Microdisk Laser/Sakai, et al./vol. 37/2-'98.
Optimum Reflectivity Design of Laser Diode Facets & Recording Medium for an Integrated Flying Optical Head/Ukita, et al./vol. 32/pp. 5295-5300/Part 1, No. 11B/11'93.
Storage and Retrieval Systems and Applications/Davies, et al./Spie-The International Society for Optical Engineering/vol. 1248 (Eng)/2-'90.
Bashaw Mathew C.
Malmhall Roger K.
Stinson Douglas G.
Thornton Robert L.
Do Caroline
Research Investment Network, Inc.
Tran Thang V
Wong Steve A.
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