CN115598769A - NaPO 4 (NH) 3 (CO) 2 Use of crystals - Google Patents
NaPO 4 (NH) 3 (CO) 2 Use of crystals Download PDFInfo
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- CN115598769A CN115598769A CN202211284173.1A CN202211284173A CN115598769A CN 115598769 A CN115598769 A CN 115598769A CN 202211284173 A CN202211284173 A CN 202211284173A CN 115598769 A CN115598769 A CN 115598769A
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- crystal
- napo
- crystals
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- birefringent
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/27—Optical coupling means with polarisation selective and adjusting means
- G02B6/2746—Optical coupling means with polarisation selective and adjusting means comprising non-reciprocal devices, e.g. isolators, FRM, circulators, quasi-isolators
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
The invention relates to NaPO 4 (NH) 3 (CO) 2 Use of the crystal; the NaPO 4 (NH) 3 (CO) 2 The crystal is used for preparing an optical isolator. The invention provides NaPO 4 (NH) 3 (CO) 2 The application of the crystal on the optical isolator enlarges the application range of the crystal.
Description
Technical Field
The invention relates to the field of crystal materials, and mainly relates to NaPO 4 (NH) 3 (CO) 2 Use of the crystals.
Technical Field
Birefringence is the phenomenon of a light beam, when incident on a crystal, being split into two beams that are refracted in different directions. They are linearly polarized light with vibration directions perpendicular to each other. The root cause of this phenomenon is the anisotropy of the crystalline material. When light propagates in a non-homogeneous body, two refracted beams are observed, which is called a light birefringence phenomenon. One of the two refracted light beams always obeys the law of refractive index, and the refracted light beam is called ordinary light, namely o light; the other refracted light beam does not obey the ordinary law of refraction, and the light beam is called extraordinary light, e light for short. The birefringence property of the crystal is an important optical performance parameter of the photoelectric functional material crystal, linearly polarized light can be obtained by utilizing the characteristics of the birefringent crystal, and displacement of light beams and the like are realized, so that the birefringent crystal becomes a key material for manufacturing optical elements such as fiber optical isolators, circulators, light beam displacers, glan prisms, optical polarizers, optical modulators and the like in optical communication.
The birefringent materials used are mainly calcite crystals, iced stone, rutile crystals, liNbO 3 Crystal, YVO 4 Crystal, alpha-BaB 2 O 4 Crystals and MgF 2 Crystals, and the like. In the case of rutile, although the refractive index is large, the light transmission range is narrow, and the application in ultraviolet and even deep ultraviolet bands is difficult; and MgF 2 The crystal has a wide transmission range, is a crystal material applied to deep ultraviolet, but has a great defect that the birefringence is too small to be used as a polarizing device.
With the development of society, the demand of human beings for birefringent crystals is increasing, and the quality requirement is higher, so that the discovery of new excellent birefringent optical crystal materials is still a problem to be solved.
According to the current development of inorganic birefringent crystal materials, a novel birefringent crystal is required to have not only a large birefringence but also excellent transmittance, good chemical stability and easy growth and processing, which requires extensive systematic and intensive research. The search for high-performance birefringent crystal materials is one of the important issues in the field of optoelectronic functional materials, and people are continuously searching for birefringent crystals with better performance.
NaPO 4 (NH) 3 (CO) 2 Has a space group of P2 1 N, unit cell parameter of
Z =4. At present, the research reports of the crystal material are limited to preliminary researches on basic properties such as structure, thermal stability, infrared spectrum and the like. Based on the current development of inorganic birefringent crystal materials, we have found that NaPO 4 (NH) 3 (CO) 2 The optical isolator has excellent birefringence performance and is expected to be applied to the optical isolator.
Disclosure of Invention
The object of the present invention is to provide NaPO 4 (NH) 3 (CO) 2 Use of a crystal in an optical isolator.
The technical scheme of the invention is as follows:
NaPO 4 (NH) 3 (CO) 2 use of crystals of NaPO 4 (NH) 3 (CO) 2 The crystal is used for preparing an optical isolator.
Preferably, the NaPO 4 (NH) 3 (CO) 2 The birefringence of the crystal at 550nm was 0.28.
An optical isolator comprising an optical coupler, a birefringent crystal, and an optically active device, said birefringent crystal being formed from said NaPO 4 (NH) 3 (CO) 2 And (5) preparing crystals.
NaPO as described herein 4 (NH) 3 (CO) 2 The crystal has larger birefringence, excellent transmission performance and better physicochemical stability.
Compared with the prior art, the invention has the following beneficial effects:
the application provides NaPO 4 (NH) 3 (CO) 2 The application of the crystal on the optical isolator enlarges the application range of the crystal.
Drawings
FIG. 1 is NaPO of the present invention 4 (NH) 3 (CO) 2 Crystal structure diagram.
FIG. 2 is NaPO of the present invention 4 (NH) 3 (CO) 2 Crystal powder X-ray diffraction pattern.
FIG. 3 is NaPO of the present invention 4 (NH) 3 (CO) 2 Diffuse reflection spectrum of crystal.
FIG. 4 is a schematic representation of the use of NaPO 4 (NH) 3 (CO) 2 The working principle diagram of the optical isolator made of the crystal is that (1) (5) is a coupler, (2) (4) is a birefringent crystal, and (3) is an optical rotation device.
Detailed Description
The invention is further described below with reference to the following examples and the accompanying drawings. It will be understood by those skilled in the art that the following examples are not intended to limit the scope of the present invention, and that any modifications and variations based on the present invention are within the scope of the present invention.
Example 1
NaPO 4 (NH) 3 (CO) 2 Use of crystals of NaPO 4 (NH) 3 (CO) 2 The crystal is used for preparing an optical isolator.
As shown in FIG. 4, an optical isolator includes an optical coupler, a birefringent crystal, and an optically active device, the birefringent crystal may be formed from the NaPO 4 (NH) 3 (CO) 2 And (5) preparing crystals.
NaPO 4 (NH) 3 (CO) 2 The crystal can be prepared by the prior art method, and NaPO is added 4 (NH) 3 (CO) 2 The crystal is subjected to diffuse reflection spectrum test, as shown in figure 3, the ultraviolet absorption cut-off of the crystal is lower than 200nm, which shows that the material can be applied to a deep ultraviolet band and has good transmission performance; the birefringence of the crystal was 0.28 at 550nm as measured by a polarizing microscope. The crystals were stable during the test, indicating stable chemical properties. Thus, naPO 4 (NH) 3 (CO) 2 The crystal can be used as a birefringent crystal for preparing an optical isolator.
As shown in fig. 2, the X-ray diffraction pattern of the powder obtained by the test was consistent with the pattern obtained by fitting according to its single crystal structure.
NaPO 4 (NH) 3 (CO) 2 The crystal has large birefringence and high transmittance, and moreover, due to NaPO 4 (NH) 3 (CO) 2 The preparation method of the crystal is simple and has great potentialThe birefringent crystal material with application value can be used for manufacturing an optical isolator. The method can also be used for preparing polarizing prisms, electro-optical adjusting switches and the like, and can be applied to the aspects of optical communication, micro-processing, photoetching and the like.
The above embodiments are merely to explain the technical solutions of the present invention in detail, and all modifications and substitutions based on the above principles and spirit should be within the protection scope of the present invention.
Claims (3)
1.NaPO 4 (NH) 3 (CO) 2 Use of a crystal characterized in that: the NaPO 4 (NH) 3 (CO) 2 The crystal is used for preparing an optical isolator.
2. NaPO according to claim 1 4 (NH) 3 (CO) 2 Use of a crystal characterized in that: the NaPO 4 (NH) 3 (CO) 2 The birefringence of the crystal at 550nm was 0.28.
3. An optical isolator comprising an optical coupler, a birefringent crystal, and an optical rotation device, wherein: the birefringent crystal is formed by NaPO 4 (NH) 3 (CO) 2 And (5) preparing crystals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211284173.1A CN115598769A (en) | 2022-10-14 | 2022-10-14 | NaPO 4 (NH) 3 (CO) 2 Use of crystals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211284173.1A CN115598769A (en) | 2022-10-14 | 2022-10-14 | NaPO 4 (NH) 3 (CO) 2 Use of crystals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115598769A true CN115598769A (en) | 2023-01-13 |
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ID=84849495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211284173.1A Pending CN115598769A (en) | 2022-10-14 | 2022-10-14 | NaPO 4 (NH) 3 (CO) 2 Use of crystals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115598769A (en) |
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2022
- 2022-10-14 CN CN202211284173.1A patent/CN115598769A/en active Pending
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