CN107993677A - A kind of laser direct writing method being used in various dimensions optical storage - Google Patents
A kind of laser direct writing method being used in various dimensions optical storage Download PDFInfo
- Publication number
- CN107993677A CN107993677A CN201610947438.XA CN201610947438A CN107993677A CN 107993677 A CN107993677 A CN 107993677A CN 201610947438 A CN201610947438 A CN 201610947438A CN 107993677 A CN107993677 A CN 107993677A
- Authority
- CN
- China
- Prior art keywords
- degree
- wave plate
- laser
- optical storage
- different
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
- G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
- G11B7/127—Lasers; Multiple laser arrays
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
The invention belongs to field of optical storage technology, it is a kind of laser direct writing method being used in various dimensions optical storage, it has spatial light modulator, the spatial light modulator sends the different laser beam of some beam intensities, the corresponding half-wave plate different equipped with several optical axis angles behind the laser beam, after light beam passes through corresponding half-wave plate, polarization state changes corresponding, and different polarization states can be used to the polarization state multiplexing in various dimensions optical storage；The system that the present invention proposes the parallel write-in of a set of more laser spots different polarization states, for optical storage or other association areas, is different from and uses rotating half-wave plate, the optical axis of half-wave plate is all fixed in the present invention.
Description
Technical field
The invention belongs to field of optical storage technology, is specifically a kind of laser direct writing method being used in various dimensions optical storage.
Background technology
The arrival of information age, allows the total amount of data of generation every year into the growth of multiple.Traditional data are stored with
Three optical storage, magnetic storage and semiconductor storage major classes, and optical storage is because low-power consumption, storage cycle length are as data
Preserve, the desirable technique of backup.Based on two-dimensional products, each storage unit can only deposit optical storage product on the market now
The data of a bit are stored up, storage capacity is limited.Since the 21th century, in order to improve the memory capacity of optical storage, various dimensions light
Storage is widely studied, some storage mediums can be produced because the different wavelength of light, polarization state, light intensity, angular momentum etc. is write
Different change, and these different changes are being read out being converted into the various dimensions signal of multiplexing, so as to allow one to deposit
Storage unit can store the data far more than a bit.
The difficulty that various dimensions optical storage technology is run at present is：Polarization state is widely used in various dimensions optical storage
A kind of optical signature, rotating half-wave plate will often be used by changing the polarization state of laser, but the precision of optical component
Rotation will devote a tremendous amount of time, this is worthless, and whole light in the device that light storage device so runs at high speed
Store the speed bottle-neck of writing system.
The content of the invention
The purpose of the present invention is aiming at the problem of current optical storage writing speed is slow, the change polarization state time is long, there is provided
A kind of laser direct writing method being used in various dimensions optical storage；The present invention proposes that a set of more laser spots different polarization states are parallel to be write
The system entered, for optical storage or other association areas, is different from and uses rotating half-wave plate, the optical axis of half-wave plate in the present invention
All it is fixed.
A kind of laser direct writing method being used in various dimensions optical storage of the present invention, has spatial light modulator, the sky
Between optical modulator send the different laser beam of some beam intensities, it is corresponding behind the laser beam to be equipped with several optic angles
Different half-wave plates is spent, after light beam passes through corresponding half-wave plate, polarization state changes corresponding, and different polarization states can be used to
Polarization state multiplexing in various dimensions optical storage, the optical axis of the half-wave plate is fixed.
In the present invention when the light beam that spatial light modulator is sent is 100 beams, and corresponding half-wave plate is 4, one 1
When × 100 laser dot-matrix is focused on the disk machine of a rotation, data will be write in a circle ring area, such as：Laser spots
The original state of polarization of battle array is 0 degree, and 1,2,3,4 corresponding optical axises are 22.5 degree in this strip half-wave chip arrays, 45 degree, 67.5
Degree and 90 degree of half-wave plate, then when laser spots array respectively during 1,2,3,4 four half-wave plate by that will respectively obtain 45 degree,
90 degree, 135 degree and the polarised light of 180 degree polarization, wherein preceding 25 laser spots will be incited somebody to action by No. 1 half-wave plate, the 26th to the 50th
By No. 2 half-wave plates, the 51st to the 75th will will pass through No. 4 half-wave plates by No. 3 half-wave plates, the 76th to the 100th；Gu
00,01,10,11 can be read as by determining the material change of the polarised light generation of wherein 45 degree, 90 degree, 135 degree and 180 degree polarization
Such binary data, then the material change that polarised light corresponding to 100 different angle laser beams produces can be read
For corresponding binary data.
Half-wave plate shares four in the present invention, and corresponding is four binary digits, i.e., the data volume of 2 bits；But half
Wave plate numeral can be any reasonable number, and the number of half-wave plate is more, and the palarization multiplexing data that each data point includes are got over
It is more；The method of the present invention and device, will avoid changing the polarization state of hot spot at the same time using revolving half-wave plate, parallel write-in
Method will greatly improve the writing speed of data.
Embodiment
Embodiment 1
A kind of laser direct writing method being used in various dimensions optical storage of the present invention, has spatial light modulator, the spatial light
Modulator sends the different laser beam of some beam intensities, corresponding behind the laser beam to be equipped with several optical axis angles not
Same half-wave plate, after light beam passes through corresponding half-wave plate, polarization state corresponding will change, and different polarization states can be used to multidimensional
The polarization state multiplexing in optical storage is spent, the optical axis of the half-wave plate is fixed.
In the present embodiment when the light beam that spatial light modulator is sent is 100 beams, and corresponding half-wave plate is 4, one
When a 1 × 100 laser dot-matrix is focused on the disk machine of a rotation, data will be write in a circle ring area, such as：Laser
The original state of polarization of dot matrix is 0 degree, and 1,2,3,4 corresponding optical axises are 22.5 degree in this strip half-wave chip arrays, 45 degree,
67.5 degree and 90 degree of half-wave plate, then when the laser spots array divided equally during 1,2,3,4 four half-wave plate by that will respectively obtain
45 degree, 90 degree, 135 degree and the polarised light of 180 degree polarization, wherein preceding 25 laser spots will by No. 1 half-wave plate, the 26th to the 50th
It is a will will to pass through No. 4 half-waves by No. 3 half-wave plates, the 76th to the 100th by No. 2 half-wave plates, the 51st to the 75th
Piece；00,01 can be read as by fixing the material change of the polarised light generation of wherein 45 degree, 90 degree, 135 degree and 180 degree polarization,
Binary data as 10,11, then the material change that polarised light corresponding to 100 different angle laser beams produces can be by
It is read as corresponding binary data.
Claims (2)
- A kind of 1. laser direct writing method being used in various dimensions optical storage, it is characterised in that：With spatial light modulator, the sky Between optical modulator send the different laser beam of some beam intensities, it is corresponding behind the laser beam to be equipped with several optic angles Different half-wave plates is spent, after light beam passes through corresponding half-wave plate, polarization state changes corresponding, and different polarization states can be used to Polarization state multiplexing in various dimensions optical storage, the optical axis of the half-wave plate is fixed.
- A kind of 2. laser direct writing method being used in various dimensions optical storage according to claim 1, it is characterised in that：Work as sky Between the light beam that sends of optical modulator be 100 beams, when corresponding half-wave plate is 4, the laser dot-matrix focusing of one 1 × 100 When on the disk machine of a rotation, data will be write in a circle ring area, such as：The original state of polarization of laser dot-matrix is 0 degree, 1,2,3,4 corresponding optical axises are 22.5 degree, 45 degree, 67.5 degree and 90 degree of half-wave plate in this strip half-wave chip arrays, that When the laser spots array divided equally during 1,2,3,4 four half-wave plate by that will respectively obtain 45 degree, 90 degree, 135 degree and 180 degree is inclined The polarised light to shake, wherein preceding 25 laser spots will be by No. 1 half-wave plate, the 26th to the 50th will be by No. 2 half-wave plates, the 51st It will will pass through No. 4 half-wave plates by No. 3 half-wave plates, the 76th to the 100th to the 75th；It is wherein 45 degree fixed, 90 degree, 135 The material change that the polarised light of degree and 180 degree polarization produces can be read as 00, binary data as 01,10,11, then The material change that polarised light corresponding to 100 different angle laser beams produces can be read as corresponding binary data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610947438.XA CN107993677A (en) | 2016-10-26 | 2016-10-26 | A kind of laser direct writing method being used in various dimensions optical storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610947438.XA CN107993677A (en) | 2016-10-26 | 2016-10-26 | A kind of laser direct writing method being used in various dimensions optical storage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107993677A true CN107993677A (en) | 2018-05-04 |
Family
ID=62028223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610947438.XA Pending CN107993677A (en) | 2016-10-26 | 2016-10-26 | A kind of laser direct writing method being used in various dimensions optical storage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107993677A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108986846A (en) * | 2018-06-22 | 2018-12-11 | 华中科技大学 | A kind of various dimensions optical storage wiring method based on direction in space multiplexing |
| CN111540384A (en) * | 2020-04-30 | 2020-08-14 | 华中科技大学 | Optical storage method and system for introducing fluorescent signal into anisotropic structure |
| CN113267842A (en) * | 2021-05-19 | 2021-08-17 | 福州高意光学有限公司 | Glass polaroid and manufacturing method thereof |
| CN114627902A (en) * | 2022-03-15 | 2022-06-14 | 浙江大学 | Single-pulse all-inorganic multi-dimensional optical storage method |
-
2016
- 2016-10-26 CN CN201610947438.XA patent/CN107993677A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108986846A (en) * | 2018-06-22 | 2018-12-11 | 华中科技大学 | A kind of various dimensions optical storage wiring method based on direction in space multiplexing |
| CN111540384A (en) * | 2020-04-30 | 2020-08-14 | 华中科技大学 | Optical storage method and system for introducing fluorescent signal into anisotropic structure |
| CN113267842A (en) * | 2021-05-19 | 2021-08-17 | 福州高意光学有限公司 | Glass polaroid and manufacturing method thereof |
| CN114627902A (en) * | 2022-03-15 | 2022-06-14 | 浙江大学 | Single-pulse all-inorganic multi-dimensional optical storage method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107993677A (en) | A kind of laser direct writing method being used in various dimensions optical storage | |
| US4918675A (en) | Magneto-optical head with separate optical paths for error and data detection | |
| US3715734A (en) | Memory storage device and method of making the same | |
| CN1191034A (en) | Method for parallel writing and reading of data in an optical memory, a writing/reading device for use by the method and uses of the method and the writing/reading device | |
| RU2672645C2 (en) | Method and system of optical data storage | |
| US7727678B2 (en) | Holographic data memory | |
| CN107052592A (en) | Double light beam laser system of processing and its method | |
| JPH07507175A (en) | optical memory | |
| JPS60131648A (en) | Optical head | |
| CN108986846B (en) | A kind of various dimensions optical storage wiring method based on direction in space multiplexing | |
| US3996570A (en) | Optical mass memory | |
| CN100419883C (en) | Optical information reproduction device | |
| CN104503101A (en) | Flow cytometry light beam forming system based on diffraction optics shaping device | |
| CN113841199B (en) | Method and system for recording data in solid substrate | |
| US5311474A (en) | Random access optical storage | |
| Mikami et al. | Experimental demonstration of optical phase multilevel recording in microhologram | |
| JPH0244554A (en) | Optical integrated device for head for magnetooptic recording and reproduction | |
| US3573750A (en) | High-speed memory system | |
| US3846764A (en) | Technique for information storage using anisotropic color centers in alkali halide crystals | |
| US20180130531A1 (en) | Three dimensional electric field data storage device utilizing shockwaves and a light source | |
| JPH03149660A (en) | Optical retrieving processor | |
| CN100416674C (en) | Optical reader and its optical pick-up head | |
| US3631414A (en) | Rapid access data storage and retrieval system | |
| RU2815327C2 (en) | High density optical data recording | |
| CN103000190B (en) | A kind of four digital-code laser Card read/write methods |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180504 |
|
| WD01 | Invention patent application deemed withdrawn after publication |