WO2020233666A1 - Window, medium and optical storage method - Google Patents

Abstract

Provided by the present invention are a window, a medium, and an optical storage method; the window comprises a polymer solid film layer; light absorption controllable interchanging molecules are comprised in the material of the window, and the light absorption controllable interchanging molecules are converted between molecules having a first configuration and molecules having a second configuration; the absorption rate of first light of the molecules having the first configuration is lower than the absorption rate of second light thereof, and the absorption rate of second light of the molecules having the second configuration is lower than the absorption rate of first light thereof; and when the molecules having the first configuration absorb the second light but do not absorb the first light, the molecules having the first configuration are converted into the molecules having the second configuration; and when the molecules having the second configuration absorb the first light but do not absorb the second light, the molecules having the second configuration are converted to the molecules having the first configuration. The medium comprises a window and a light sensitive portion. The present invention adopts the principle of dual-beam super-resolution optics, achieves a super-resolution high-density technology in combination with a window, and solves the problem in the existing dual-beam technology wherein requirements on the material of a light sensitive portion are high.

Description

Window, medium and optical storage method Technical field

The invention belongs to the field of optical technology, and particularly relates to a window, a medium and an optical storage method.

Background technique

Light has a wide range of applications in energy, electronics, communications, medical care, etc., especially in the fields of information reading and writing, semiconductor manufacturing, information transmission, and optical microscopy. The area where light acts on the target is as small as possible. Due to the diffraction limit of light, the size of the area where the light acts on the target cannot break through the limitation of the diffraction limit. Therefore, the development of optical technology is greatly hindered.

In the prior art, there is a new dual-beam super-resolution technology, which uses the excitation beam to initiate photopolymerization on the target. A suppression beam with a hollow focal point suppresses the polymerization reaction in the overlapping area of the excitation beam and the suppression beam. , To limit the polymerization reaction to the focal center of the hollow part to achieve the purpose of reducing the size of the light action area on the target, breaking the limit of the single beam diffraction limit.

However, in the existing dual-beam super-resolution technology, because both beams of light need to interact with the substance, the traditional photoresist, initiator and other materials used for single-beam processing can no longer meet the requirements of dual-beam super-resolution lithography. It is necessary to find alternative materials that can work on both beams and can realize the function of light. The material requirements are high and the difficulty is relatively large.

Summary of the invention

In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a window, medium and optical storage method to solve the problem of high material requirements in the existing dual-beam super-resolution technology.

In order to achieve the above objectives and other related objectives, the present invention provides the following examples:

1. Example 1 provided by the present invention: a window comprising a polymer solid film layer, the polymer solid film layer comprising light absorption controllable interconversion molecules, and the light absorption controllable interconversion molecules are in a first configuration Conversion between molecules and molecules in the second configuration; the first light absorption rate of the first configuration molecule is lower than the second light absorption rate, and the second light absorption rate of the second configuration molecule is low In its first light absorption rate; when the first configuration molecule absorbs the second light but does not absorb the first light, the first configuration molecule is converted into the second configuration molecule, When the second configuration molecule absorbs the first light but does not absorb the second light, the second configuration molecule is converted into the first configuration molecule.

2. Example 2 provided by the present invention: Including the above example 1, wherein the molecule in the first configuration is still in the first configuration when absorbing the photon energy of the first light and the second light at the same time Molecules; The molecules of the second configuration are converted into the molecules of the first configuration when they absorb the photon energy of the first light and the second light at the same time.

3. Example 3 provided by the present invention: including the above example 1 or 2, wherein the light absorption controllable interconversion molecule includes diarylethylene molecules and derivative molecules, spiropyran molecules and derivative molecules, and spirooxazine Class molecules and derivative molecules, azobenzene molecules and derivative molecules, or fulgide molecules and derivative molecules.

4. Example 4 provided by the present invention: a medium comprising a window and a light sensitive part, the material of the window includes light absorption controllable interconversion molecules, and the light absorption controllable interconversion molecules are in the first configuration of molecules and Conversion between molecules in the second configuration; the first light absorption rate of the first configuration molecule is lower than its second light absorption rate, and the second light absorption rate of the second configuration molecule is lower than its Absorption rate of the first light; when the first configuration molecule absorbs the second light but does not absorb the first light, the first configuration molecule is converted into the second configuration molecule, the When the second configuration molecule absorbs the first light but does not absorb the second light, the second configuration molecule is converted into the first configuration molecule.

5. Example 5 provided by the present invention: including the above example 4, wherein the molecule in the first configuration is still in the first configuration when absorbing the photon energy of the first light and the second light at the same time Molecules; The molecules of the second configuration are converted into the molecules of the first configuration when they absorb the photon energy of the first light and the second light at the same time.

6. Example 6 provided by the present invention: Including the above examples 4 or 5, the light absorption controllable interconversion molecules include diarylethylene molecules and derivative molecules, spiropyran molecules and derivative molecules, and spirooxazine molecules And derivative molecules, azobenzene molecules and derivative molecules, or fulgide molecules and derivative molecules.

7. Example 7 provided by the present invention: includes any one of the above examples 4 to 6, wherein the window includes a polymer solid film layer, and the polymer solid film layer includes light absorption controllable interconversion molecules.

8. Example 8 provided by the present invention: including any one of the above examples 4 to 7, wherein the material of the light sensitive part includes a light sensitive recording component.

9. Example 9 provided by the present invention: includes any one of the above examples 4 to 8, wherein the light-sensitive recording component includes molecular switch controllable fluorescent molecules, photoacid generators and fluorescent precursor molecules, with double Molecular switch controllable fluorescent molecules with photon absorption characteristics, photoacid-generating molecules and fluorescent precursors with two-photon absorption characteristics, inorganic fluorescent materials and fluorescent precursors with two-photon absorption characteristics, organic-inorganic composites with two-photon absorption characteristics Materials or inorganic materials with two-photon absorption characteristics and polymers with fluorescent characteristics.

10. Example 10 provided by the present invention: including any one of the foregoing Examples 4 to 9, wherein the light sensitive portion includes a polymer solid film layer, and the polymer solid film layer includes a light sensitive recording component.

11. Example 11 provided by the present invention: an optical storage medium, including the medium described in any one of the above examples 4 to 10, the optical storage medium including a single-layer single-side reading medium structure, a single-layer double-side reading Take the medium structure, single-layer double-point double-side reading medium structure, multilayer single-side reading medium structure, multilayer double-side reading medium structure or multilayer double-point double-side reading medium structure.

12. Example 12 provided by the present invention: an optical system, including:

Light source and medium;

The light source includes first light and second light, and the medium includes the window of any one of Examples 1 to 3 above or the medium of any one of Examples 4 to 10 above or the optical storage medium of Example 11 above.

13. Example 13 provided by the present invention: including the above example 12, wherein the first light is hollow light and the second light is solid light.

14. Example 14 provided by the present invention: includes the above example 12 or 13, wherein the first light is coaxial with the second light.

15. Example 15 provided by the present invention: includes any one of the above examples 12 to 14, wherein the first light is a single hollow light or a multi-beam hollow light array, and the single hollow light of the first light is The central hollow area is nanometer scale, and the optional range of nanometer scale is 0～10nm, 10～20nm, 20～30nm, 30～40nm, 40～50nm, 50～60nm, 60～70nm, 70～80nm, 80～90nm, 90-100nm, 100-110nm, 110-120nm, 120-130nm, 130-140nm, 140-150nm, 150-160nm, 160-170nm, 170-180nm, 180-190nm or 190-200nm.

16. Example 16: provided by the present invention: includes any one of the foregoing examples 12 to 15, wherein the second light adopts a single solid Gaussian beam or multiple Gaussian beam arrays that can be independently controlled on and off, and the first The single beams of the two lights are coaxial with the central hollow center of the corresponding hollow light of the first light, and the irradiation range of the single beam of the second light does not exceed the irradiation area of the single beam of the first light.

17. Example 17 provided by the present invention: an optical method including:

Use the first light to irradiate a window including light absorption controllable interconversion molecules to form a first light zone;

Irradiate the window with a second light to form a second light area; wherein the first light area and the second light area partially overlap;

Wherein, in the first optical zone, it includes the overlapping part of the first optical zone and the second optical zone, the light absorption controllable interconversion molecule is a molecule of the first configuration; the non-coincidence in the second optical zone In part, the light absorption controllable interconversion molecule is converted from the first configuration molecule to the second configuration molecule; the first light absorption rate of the first configuration molecule is lower than the second light absorption rate , The second light absorption rate of the second configuration molecule is lower than the first light absorption rate.

18. Example 18 provided by the present invention: including the above example 17, wherein the non-coincident portion of the second light zone is smaller than the diffraction limit of the second light.

19. Example 19 provided by the present invention: including the above examples 17 or 18, wherein the central area of the first light zone is a hollow area, and the surrounding area of the first light zone is an irradiation area for suppressing light effects; The second light zone is the irradiation area for light effect.

20. Example 20 provided by the present invention: includes any one of the foregoing Examples 17 to 19, wherein the first light is hollow light and the second light is solid light.

21. Example 21 provided by the present invention: includes any one of the foregoing Examples 17 to 20, wherein the first light is coaxial with the second light.

22. Example 22 provided by the present invention: includes any one of the above examples 20 or 21, wherein the first light is a single hollow light or a multiple hollow light array, and the single hollow light of the first light is The central hollow area is nanometer scale, and the optional range of nanometer scale is 0～10nm, 10～20nm, 20～30nm, 30～40nm, 40～50nm, 50～60nm, 60～70nm, 70～80nm, 80～90nm, 90-100nm, 100-110nm, 110-120nm, 120-130nm, 130-140nm, 140-150nm, 150-160nm, 160-170nm, 170-180nm, 180-190nm or 190-200nm.

23. Example 23 provided by the present invention: includes any one of the foregoing examples 20 to 22, wherein the second light adopts a single solid Gaussian beam or a plurality of Gaussian beam arrays that can be independently switched on and off. The single beams of the two lights are coaxial with the central hollow center of the corresponding hollow light of the first light, and the single beam irradiation area of the second light does not exceed the single beam irradiation area of the first light.

24. Example 24 provided by the present invention: an optical storage method, including the optical method of any one of the foregoing examples 17 to 23, wherein:

The first light and the second light act on the window of the optical storage medium, and act on the light absorption controllable interconversion molecule in the window; the light absorption controllable interconversion under the irradiation area of the first light zone The molecule is in an absorption state that absorbs the photon energy of the second light, forming a closed window state that blocks the second light, so that the second light cannot change the photosensitive part;

The central hollow area of the first light zone forms a windowed state that does not absorb the second light, and the second light acts on the light sensitive part to activate the light sensitive recording component in the light sensitive part; After the light-sensitive recording component absorbs the photon energy of the second light, optical recording information dots are generated.

25. Example 25 provided by the present invention: includes the above example 24, wherein the optical storage method further includes:

Using the irradiation of the first light to inhibit the generation of molecules of the second configuration in the irradiation area of the first light zone, and the central hollow area of the first light zone has no inhibitory effect;

With the second light irradiation, the molecules of the first configuration in the window continue to absorb the second light in the overlapping part of the first light zone, and inhibit the second light from penetrating the window. In the central hollow area of the first light zone, After the second light converts the molecules of the first configuration into the molecules of the second configuration in the window, it acts on the light sensitive part of the lower layer through the window.

26. Example 26 provided by the present invention: includes the above example 24, wherein the optical storage method further includes:

Utilizing the irradiation of the first light, the molecules of the second configuration in the window in the illuminated area of the first light zone continuously absorb the first light, and then they are converted into molecules of the first configuration. The central hollow area of the first light zone The window is still in the second configuration molecule;

With the second light irradiation, the molecules of the first configuration in the window continue to absorb the second light in the overlapping part of the first light zone, and inhibit the second light from penetrating the window. In the central hollow area of the first light zone, The two light transmission windows act on the lower light sensitive part.

As mentioned above, the window, medium and optical storage method provided by the present invention have at least one of the following beneficial effects:

First, the present invention has lower requirements on the material of the photosensitive part than in the prior art, and does not need to find a long-term stable molecular switch material with a high two-photon absorption cross section, and divides the required complex materials into two simple materials. Substantially improved

Second, the present invention adopts the dual-beam super-resolution optical principle, combined with the window realization super-resolution technology, and proposes a new dual-beam super-resolution realization method;

Third, when the present invention is used for optical storage, long-term stable optical storage can be realized, and the material of the photosensitive part is more stable;

Fourth, when the present invention is used for optical storage, multiple layers of information can be written and read, and a good signal-to-noise ratio can be obtained.

Description of the drawings

Figure 1A shows a schematic diagram of the structure of a single-layer single-side reading medium of the present invention.

Figure 1B shows a schematic diagram of the structure of a single-layer double-sided reading medium of the present invention.

Figure 1C shows a schematic diagram of the structure of a single-layer double-point double-sided reading medium of the present invention.

Figure 1D shows a schematic diagram of the structure of a multilayer single-sided reading medium of the present invention.

FIG. 1E shows a schematic diagram of the structure of the multilayer double-sided reading medium of the present invention.

Figure 1F shows a schematic diagram of the structure of a multi-layer double-point double-sided reading medium of the present invention.

Figure 2 shows a schematic diagram of the structure of the optical system of the present invention.

Fig. 3 is a schematic diagram showing the structure of the first light and the second light of the present invention.

Among them, medium 1, window 11, light sensitive part 12, first light source 21, first light 211, second light source 22, second light 221, first light area 31, second light area 32, writing light 10, Read light 20.

Detailed ways

The following describes the implementation of the present invention through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and the features in the embodiments can be combined with each other if there is no conflict.

It should be noted that the illustrations provided in the following embodiments only illustrate the basic idea of the present invention in a schematic way. The figures only show the components related to the present invention instead of the number, shape and actual implementation of the components. For size drawing, the type, quantity, and ratio of each component can be changed at will during actual implementation, and the component layout type may also be more complicated.

Example 1

This embodiment provides a window 11.

Wherein, the material of the window 11 includes light absorption controllable interconversion molecules, and the light absorption controllable interconversion molecules can be switched between molecules in the first configuration and molecules in the second configuration. The first light absorption rate of the molecule in the first configuration is lower than the absorption rate of the second light, and the second light absorption rate of the molecule in the second configuration is lower than the absorption rate of the first light. When the first configuration molecule absorbs the second light but not the first light, the first configuration molecule can be converted into the second configuration molecule. When the second configuration molecule absorbs the first light but does not absorb the second light, Molecules in the second configuration can be converted to molecules in the first configuration.

Specifically, light absorption controllable interconversion molecules include molecules in a first configuration and molecules in a second configuration. The molecules of the first configuration do not absorb the first light and absorb the second light, and the molecules of the second configuration do not absorb the second light and absorb the first light. The molecules of the first configuration are converted into molecules of the second configuration after absorbing the photon energy of the second light, and the molecules of the second configuration are converted into molecules of the first configuration after absorbing the photon energy of the first light.

When the molecule of the first configuration absorbs the photon energy of the first light and the second light at the same time, it is still the molecule of the first configuration, and is always in a state that can absorb the photon energy of the second light. When the second configuration molecule absorbs the photon energy of the first light and the second light at the same time, it is converted into the first configuration molecule, and is always in a state that can absorb the photon energy of the second light.

The window 11 may be a polymer solid film layer, and the polymer solid film layer includes light absorption controllable interconversion molecules. The types of light absorption controllable interconversion molecules include diarylethene molecules and derivative molecules, spiropyran molecules and derivative molecules, spirooxazine molecules and derivative molecules, azobenzene molecules and derivative molecules or fulgides Class molecules and derivative molecules, etc.

Example 2

As shown in FIG. 1A, this embodiment provides a medium, including: a window 11 and a light sensitive part 12.

The window 11 may be the window 11 in the first embodiment, but the shape of the window 11 is not limited to the polymer solid film layer. The material of the light-sensitive part 12 includes a light-sensitive recording component. The light-sensitive recording component is only sensitive to the second light, and after absorbing the photon energy of the second light, the light-sensitive recording component generates record information dots that can be stably recorded.

Specifically, the light-sensitive part 12 includes a polymer solid film layer, the polymer solid film layer includes a light-sensitive recording component, and the light-sensitive recording component includes a molecular switch controllable fluorescent molecule, a photoacid generator and a fluorescent precursor molecule. Molecular switch controllable fluorescent molecules with photon absorption characteristics, photoacid-generating molecules and fluorescent precursors with two-photon absorption characteristics, inorganic fluorescent materials and fluorescent precursors with two-photon absorption characteristics, organic-inorganic composites with two-photon absorption characteristics Materials or inorganic materials with two-photon absorption characteristics and polymers with fluorescent characteristics.

Example 3

This embodiment provides an optical storage medium, including the medium in the second embodiment.

Optical storage media include single-layer single-sided reading media, single-layer double-sided reading media, single-layer double-point double-sided reading media, multi-layer single-sided reading media, multi-layer double-sided reading media, or multi-layer double-points Read the media on both sides.

Please refer to Figure 1A, Figure 1B, Figure 1C, Figure 1D, Figure 1E, Figure 1F, shown as single-layer single-sided reading medium, single-layer double-sided reading medium, single-layer double-point double-sided reading medium, multiple Schematic diagram of the structure of a single-layer reading medium, a multi-layer double-side reading medium, and a multi-layer double-point and double-side reading medium.

The reading light 10 includes a first light and a second light, and is used for information reading. The writing light 20 includes another first light and another second light for information writing. The direction indicated by the arrow in the figure is the irradiation direction of the corresponding reading light 10 or writing light 20.

As shown in FIG. 1A, the single-layer single-sided reading medium includes a window 11 and a light sensitive part 12 superimposed on the window 11. Specifically, the window 11 is provided on the upper layer of the light sensitive part 12, and the reading light 10 and the writing light 20 are irradiated from the window 11 on one side.

As shown in FIG. 1B, the single-layer double-sided reading medium includes a window 11 and a photosensitive part 12 superimposed on the window 11. The writing light 20 is irradiated from the window 11 on one side, and the reading light 10 is irradiated from the photosensitive part 12 on the other side.

As shown in FIG. 1C, a single-layer double-point double-sided reading medium includes windows 11 on both sides, and a light-sensitive part 12 sandwiched between the windows 11. The reading light 10 and the writing light 20 are irradiated from the windows 11 on both sides.

As shown in FIG. 1D, the multi-layer single-sided reading medium includes several sets of windows 11 and the light sensitive part 12 superimposed on the windows 11. One side of the multi-layer single-side reading medium is the window 11, and the other side is the light. Sensitive part 12. The reading light 10 and the writing light 20 are irradiated from the window 11 on one side.

As shown in FIG. 1E, the multi-layer double-sided reading medium includes several sets of windows 11 and the light-sensitive part 12 superimposed on the windows 11. One side of the multi-layer double-sided reading medium is the window 11, and the other side is the light. Sensitive part 12. The reading light 10 is irradiated from the window 11 on one side, and the writing light 20 is irradiated from the photosensitive portion 12 on the other side.

As shown in FIG. 1F, the multi-layer double-point double-sided reading medium includes several sets of windows 11 and the light-sensitive part 12 superimposed on the windows 11, wherein both sides of the multi-layer double-point double-side reading medium are windows 11. The reading light 10 and the writing light 20 are irradiated from the windows 11 on both sides.

Example 4

As shown in FIG. 2, this embodiment provides an optical system, including a first light source 21, a second light source 22, a light modulation system 23, and a window 11. The window 11 may be the window 11 in the first embodiment.

The first light source 21 includes a first light 211, and the second light source 22 includes a second light 221. The first light 211 and the second light 221 may be any suitable ones that convert the molecules of the first configuration and the second configuration of the window 11. Of light.

In one embodiment, the first light 211 is a hollow light, and the second light 221 is a solid light. The irradiation mode of the first light 211 and the second light 221 can be continuous or pulsed. The central area of the first light 211 is a hollow area, the surrounding area of the first light 211 is an irradiation area for suppressing light effects, and the second light 221 is an irradiation area for light effects. After the first light 211 and the second light 221 pass through the light modulation system 23, the first light 211 and the second light 221 are coaxial and partially overlapped. After being modulated, the coaxial first light 211 and the second light 221 illuminate the window 11, and through the function of the window 11, the part of the irradiation area of the second light 221 that does not overlap with the first light 211 passes through the window 11. The portion of the second light 221 passing through the window 11 is smaller than the portion before passing through the window 11, and can be used in the fields of information reading and writing, semiconductor manufacturing, information transmission, optical microscopy, etc., to achieve super-resolution technology that breaks the diffraction limit.

The first light 211 includes a single hollow light or a multiple hollow light array. The central hollow area of the single hollow light of the first light 211 is of nanometer scale, and the selectable range of nanometer scale is 0-10nm, 10-20nm, 20-30nm, 30-40nm, 40-50nm, 50-60nm, 60-70nm , 70～80nm, 80～90nm, 90～100nm, 100～110nm, 110～120nm, 120～130nm, 130～140nm, 140～150nm, 150～160nm, 160～170nm, 170～180nm, 180～190nm or 190 ~200nm.

The second light 221 includes a single solid Gaussian beam or multiple Gaussian beam arrays that can be independently switched on and off. A single beam of the second light 221 is coaxial with the central hollow center of the corresponding hollow light of the first light 211, and the second light 221 The single beam irradiation range of the first light 211 does not exceed the single beam irradiation area.

Example 5

This embodiment provides an optical method, including:

The first light is used to irradiate the window 11 including light absorption controllable interconversion molecules to form the first light zone 31;

The window 11 is irradiated with second light to form a second light zone 32. Among them, the first light zone 31 and the second light zone 32 partially overlap. The first light zone 31 includes the overlapping part of the first light zone 31 and the second light zone 32, and the light absorption controllable interconversion molecule is a molecule of the first configuration. In the non-overlapping part of the second optical zone 32, the light absorption controllable interconversion molecule is converted from the molecule of the first configuration to the molecule of the second configuration. The first light absorption rate of the molecule in the first configuration is lower than the absorption rate of the second light, and the second light absorption rate of the molecule in the second configuration is lower than the absorption rate of the first light. The non-coincident portion of the second light zone 32 is smaller than the diffraction limit of the second light.

The first light is hollow light, the second light is solid light, and the irradiation mode of the first light and the second light can be continuous or pulsed. As shown in FIG. 3, the central area of the first light area 31 is a hollow area, the surrounding area of the first light area 31 is an irradiation area for suppressing light effects, and the second light area 32 is an irradiation area for light effects. The first light zone 31 and the second light zone 32 are coaxial and partially overlapped. In this embodiment, if the non-overlapping portion of the second light zone 32 cannot be generated without the first light due to the diffraction limit of the second light, the non-overlapping portion of the second light zone 32 is smaller than the diffraction limit of the second light. The non-overlapping part of the second light zone 32 is defined as being smaller than the diffraction limit of the second light as: the non-overlapping part of the second light zone 32 refers to the area where the window 11 is only irradiated by the second light and not by the first light.

Specifically, the first light includes a single hollow light or multiple hollow light arrays; the central hollow area of the single hollow light of the first light is nanometer-scale, and the optional range of nanometer-scale is 0-10nm, 10-20nm, 20～ 30nm, 30～40nm, 40～50nm, 50～60nm, 60～70nm, 70～80nm, 80～90nm, 90～100nm, 100～110nm, 110～120nm, 120～130nm, 130～140nm, 140～150nm, 150-160nm, 160-170nm, 170-180nm, 180-190nm or 190-200nm.

Specifically, the second light includes a single solid Gaussian beam or multiple Gaussian beam arrays that can be independently switched on and off. The single beams of the second light are all coaxial with the central hollow center of the hollow light corresponding to the first light. The single beam irradiation range does not exceed the single beam irradiation area of the first light.

Example 6

This embodiment provides an optical storage method for reading and writing information on the optical storage medium of the third embodiment, including the optical method of the fourth embodiment.

When performing an information writing operation, hollow light and solid light act on the window 11 of the optical storage medium, and have an effect on the light absorption controllable interconversion molecule in the window 11. The light absorption controllable interconverting molecules under the irradiation area of the first light zone 31 are in the absorption state of absorbing the photon energy of the second light. Since the hollow light is stronger than the solid light in the overlapping part of the hollow light and the solid light, it ensures Under the irradiation area of the hollow light, the light-absorbing controllable interconverting molecules are always in a state that can absorb the photon energy of the solid light, forming a closed window state that blocks the first light, so that the first light cannot reach the light sensitive part 12. In this embodiment, the closed window state means that the window 11 is irradiated with excitation light, so that the window 11 is opaque to excitation light of a certain wavelength, so that the light of this wavelength cannot pass through the window 11 and can restrict the effect on the light sensitive part 12 The spot size of the excitation light.

Since the central hollow area of the hollow light has no photon effect of the hollow light, the central hollow area of the first light zone 31 cannot absorb the second light, forming an open window state that does not absorb the second light. The second light acts on the light sensitive through the window 11 The part 12 activates the light-sensitive recording component in the light-sensitive part 12, absorbs the photon energy of the second light, and generates a light recording point. The activated light-sensitive recording component can emit fluorescence under the action of excitation light of another wavelength during reading, and both the excitation light and the emitted fluorescence can pass through the window 11 to realize the writing and reading of information. In this embodiment, the open window state means that the window 11 is irradiated with excitation light to make the window 11 transparent to excitation light of a certain wavelength, so that the light of this wavelength can pass through the window 11 to act on the light sensitive part 12, and perform Writing or reading of information.

In this embodiment, the optical storage method includes two implementation methods:

The first type is to receive the irradiation of the first light to inhibit the generation of molecules of the second configuration in the irradiation area of the first light zone 31, and the central hollow area of the first light zone 31 has no inhibitory effect;

Receiving the second light, the molecules of the first configuration in the window 11 continue to absorb the second light in the overlapping area with the first light, preventing the second light from penetrating through the window 11, which is hollow in the center of the first light zone 31 In the region, the second light region 32 converts the molecules of the first configuration in the window 11 into molecules of the second configuration, and then acts on the light sensitive part 12 through the window 11.

The second type is to receive the irradiation of the first light. In the irradiated area of the first light zone 31, the molecules of the second configuration in the window 11 continue to absorb the first light, and then they are converted into molecules of the first configuration. The central hollow area window 11 of 31 is still the second configuration molecule;

Upon receiving the irradiation of the second light, the molecules of the first configuration in the window 11 continue to absorb the second light in the region overlapping with the first light, thereby preventing the second light from penetrating the window 11. In the central hollow area of the first light zone 31, the second light can pass through the molecules of the second configuration in the window 11 to act on the light sensitive part 12. The light-sensitive recording component in the light-sensitive part 12 is only sensitive to the second light, and generates signal points that can be stably recorded after absorbing the photon energy of the second light.

Take the first optical storage method as an example, when the optical storage medium is a single-layer double-sided reading medium:

The optical storage medium consists of a window 11 and a light sensitive part 12. The material of the window 11 is 1,2-bis(5,5'-dimethyl-2,2'-dithienyl)hexafluorocyclopentene, which is light sensitive The part 12 material is 4,4'bis(diphenylamino-trans-styryl)biphenyl. Window 11 is a kind of molecular switch material, stored in an open loop form. The open-ring structure will be transformed into the isomer of the closed-ring structure after absorbing 325nm light; the closed-ring structure will be transformed into the isomer of the open-ring structure after absorbing 633nm light. The writing light 20 adopts a hollow beam and a Gaussian beam with a center superimposed concentric, the hollow beam has a wavelength of 633 nm, and the Gaussian beam has a wavelength of 325 nm. The writing light 20 will form a small hole on the window 11, and only the Gaussian light within the small hole will not be absorbed by the window 11. The Gaussian light of 325 nm passes through the window 11 and then irradiates the light sensitive part 12. After the material of the light sensitive part 12 absorbs Gaussian light, the material characteristics change to produce recording dots. The reading light 10 adopts a hollow beam and a Gaussian beam with a center superimposed concentric, the hollow beam has a wavelength of 633 nm, and the Gaussian beam has a wavelength of 335 nm. Therefore, the recording points in the area irradiated by the hollow light will not emit fluorescence, and the recording points in the area irradiated by the Gaussian light will emit fluorescence, thereby achieving information reading.

When the optical storage medium is a single-layer double-point double-sided reading medium:

The writing light 20 and the reading light 10 have one beam at each of the windows 11 located on both sides of the light sensitive part 12, through the same principle as the optical storage method of the single-layer double-sided reading medium structure, in the upper half of the light sensitive part 12 Recording points are generated in the part and the lower part, forming two layers of recording points.

In summary, the window, medium and optical storage method of the present invention have at least one of the following beneficial effects:

First, the present invention has lower requirements on the material of the photosensitive part than in the prior art, and does not need to find a long-term stable molecular switch material with a high two-photon absorption cross section, and divides the required complex materials into two simple materials. Substantially improved

Second, the present invention adopts the dual-beam super-resolution optical principle, combined with the window realization super-resolution technology, and proposes a new dual-beam super-resolution realization method;

Third, when the present invention is used for optical storage, long-term stable optical storage can be realized, and the material of the photosensitive part is more stable;

Fourth, when the present invention is used for optical storage, multiple layers of information can be written and read, and a good signal-to-noise ratio can be obtained.

The invention effectively overcomes various shortcomings in the prior art and has high industrial value.

The above-mentioned embodiments only exemplarily illustrate the principles and effects of the present invention, and are not used to limit the present invention. Anyone familiar with this technology can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present invention should still be covered by the claims of the present invention.

Claims (14)

1. A window, characterized in that it comprises a polymer solid film layer, the polymer solid film layer includes light absorption controllable interconversion molecules, and the light absorption controllable interconversion molecules are in a first configuration and a second configuration. Conversion between molecules of the first configuration; the first light absorption rate of the first configuration molecule is lower than the second light absorption rate, and the second light absorption rate of the second configuration molecule is lower than the first light absorption rate When the first configuration molecule absorbs the second light but does not absorb the first light, the first configuration molecule is converted to the second configuration molecule, and the second configuration When the type molecule absorbs the first light but not the second light, the second configuration molecule is converted into the first configuration molecule.
2. The window according to claim 1, wherein when the first configuration molecule absorbs the photon energy of the first light and the second light at the same time, it is still the first configuration molecule; The second configuration molecule is converted into the first configuration molecule when simultaneously absorbing the photon energy of the first light and the second light.
3. The window according to claim 1 or 2, wherein the light absorption controllable interconversion molecule includes diarylethylene molecules and derivatives, spiropyran molecules and derivatives, spirooxazine molecules, and Derivative molecules, azobenzene molecules and derivative molecules or fulgide molecules and derivative molecules.
4. A medium, characterized in that it comprises a window and a light-sensitive part, the material of the window comprises light absorption controllable interconversion molecules, and the light absorption controllable interconversion molecules are in a first configuration molecule and a second configuration molecule. Conversion between; the first light absorption rate of the first configuration molecule is lower than the second light absorption rate, and the second light absorption rate of the second configuration molecule is lower than the first light absorption rate Rate; when the first configuration molecule absorbs the second light but does not absorb the first light, the first configuration molecule is converted into the second configuration molecule, the second configuration molecule When the first light is absorbed but the second light is not absorbed, the molecules of the second configuration are converted into the molecules of the first configuration.
5. The medium according to claim 4, wherein when the first configuration molecule absorbs the photon energy of the first light and the second light at the same time, it is still the first configuration molecule; The second configuration molecule is converted into the first configuration molecule when simultaneously absorbing the photon energy of the first light and the second light.
6. The medium according to claim 5, wherein the light absorption controllable interconversion molecule comprises diarylethylene molecules and derivative molecules, spiropyran molecules and derivative molecules, spirooxazine molecules and derivative molecules , Azobenzene molecules and derivatives or fulgide molecules and derivatives.
7. The medium according to any one of claims 4 to 6, wherein the window comprises a polymer solid film layer, and the polymer solid film layer includes light absorption controllable interconversion molecules.
8. The medium according to claim 4, wherein the material of the light-sensitive portion includes a light-sensitive recording component.
9. The medium according to claim 8, wherein the light-sensitive recording component comprises molecular switch controllable fluorescent molecules, photoacid generators and fluorescent precursor molecules, and molecular switch controllable fluorescent molecules with two-photon absorption characteristics , Photoacid-generating molecules and fluorescent precursors with two-photon absorption characteristics, inorganic fluorescent materials and fluorescent precursors with two-photon absorption characteristics, organic-inorganic composite materials with two-photon absorption characteristics or polymers with two-photon absorption characteristics Inorganic materials with fluorescent properties.
10. The medium according to claim 8 or 9, wherein the light sensitive part comprises a polymer solid film layer, and the polymer solid film layer comprises a light sensitive recording component.
11. An optical storage medium, comprising the medium of any one of claims 4 to 10, the optical storage medium comprising a single-layer single-sided reading medium structure, a single-layer double-sided reading medium structure, and a single layer Double-point double-side reading medium structure, multi-layer single-side reading medium structure, multi-layer double-side reading medium structure, or multi-layer double-point double-side reading medium structure.
12. An optical storage method, characterized by comprising:

    The first light and the second light act on the window of the optical storage medium, and have an effect on the light absorption controllable interconversion molecule in the window; the light absorption controllable interconversion molecule under the irradiation area of the first light zone is in The absorption state of the photon energy of the second light is formed to form a closed window state that blocks the second light, so that the second light cannot change the photosensitive part;

    The central hollow area of the first light zone forms a windowed state that does not absorb the second light, and the second light acts on the light sensitive part to activate the light sensitive recording component in the light sensitive part; After the light-sensitive recording component absorbs the photon energy of the second light, optical recording information dots are generated.
13. The optical storage method of claim 12, wherein the optical storage method further comprises:

    Using the irradiation of the first light to inhibit the generation of molecules of the second configuration in the irradiation area of the first light zone, and the central hollow area of the first light zone has no inhibitory effect;

    With the second light irradiation, the molecules of the first configuration in the window continue to absorb the second light in the overlapping part of the first light zone, and inhibit the second light from penetrating the window. In the central hollow area of the first light zone, After the second light converts the molecules of the first configuration into the molecules of the second configuration in the window, it acts on the light sensitive part of the lower layer through the window.
14. The optical storage method of claim 12, wherein the optical storage method further comprises:

    Utilizing the irradiation of the first light, the molecules of the second configuration in the window in the illuminated area of the first light zone continuously absorb the first light, and then they are converted into molecules of the first configuration. The central hollow area of the first light zone The window is still in the second configuration molecule;

    With the second light irradiation, the molecules of the first configuration in the window continue to absorb the second light in the overlapping part of the first light zone, and inhibit the second light from penetrating the window. In the central hollow area of the first light zone, The two light transmission windows act on the lower light sensitive part.

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