CN112099126A - 600-once-used 2700nm waveband achromatic half-wave plate - Google Patents
600-once-used 2700nm waveband achromatic half-wave plate Download PDFInfo
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- CN112099126A CN112099126A CN202011087349.5A CN202011087349A CN112099126A CN 112099126 A CN112099126 A CN 112099126A CN 202011087349 A CN202011087349 A CN 202011087349A CN 112099126 A CN112099126 A CN 112099126A
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- wave
- wave plates
- wave plate
- pair
- plates
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- 230000003287 optical effect Effects 0.000 claims abstract description 21
- 239000013078 crystal Substances 0.000 claims abstract description 20
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 claims abstract description 11
- 229910001635 magnesium fluoride Inorganic materials 0.000 claims abstract description 11
- 239000010453 quartz Substances 0.000 claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011159 matrix material Substances 0.000 claims abstract description 4
- 239000003292 glue Substances 0.000 claims 2
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Classifications
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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
- G02B5/3083—Birefringent or phase retarding elements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Polarising Elements (AREA)
Abstract
The invention discloses an achromatic half-wave plate with a wave band of 600-2700nm, which comprises three quartz crystal wave plates with the same thickness and three magnesium fluoride crystal wave plates with the same thickness; the assembly structure is that the quartz crystal wave plates and the magnesium fluoride crystal wave plates are orthogonally combined into 3 pairs of wave plates, the equivalent optical axes of the first pair of wave plates and the second pair of wave plates form an included angle of 0-180 degrees, the equivalent optical axes of the third pair of wave plates are parallel to the equivalent optical axes of the first pair of wave plates, and the optical axes of the 6 crystal wave plates are parallel to the light-passing surface; the thickness parameters of the quartz wave plate and the magnesium fluoride wave plate are calculated through the Jones matrix, and the half-wave plate with the precision of 600-2700nm wave band higher than 1/360 is obtained.
Description
Technical Field
The invention relates to a wave plate in an optical element, which is an achromatic half-wave plate with a wave band of 600-.
Background
A birefringent crystal of a certain thickness, such a wafer becoming a half wave plate, abbreviated as a half wave plate, into which polarized light enters when the normally incident light is transmitted and the phase difference between the ordinary light O and the ordinary light E is equal to pi or an odd multiple of pi, the vibration plane of the outgoing light being rotated by 2 deg. with respect to the vibration plane of the incoming light, the hot angle being the angle between the vibration plane of the incoming light and the optical axis on the crystal surface; the half-wave plate type in the market at present mainly is single wave plate and compound wave plate, and single wave plate application wavelength range is extremely short, and compound wave plate application range has a certain bandwidth, but the coverage is not wide, and the precision is on the low side.
Disclosure of Invention
In order to solve the problems that the prior composite wave plate has insufficient bandwidth and low precision, the invention provides a 600-2700nm wave band high-precision achromatic half-wave plate; comprises three quartz crystal wave plates with the same thickness and three magnesium fluoride crystal wave plates with the same thickness; the assembly structure is that the quartz crystal wave plates and the magnesium fluoride crystal wave plates are orthogonally combined into 3 pairs of wave plates, the equivalent optical axes of the first pair of wave plates and the second pair of wave plates form a theta included angle, the equivalent optical axes of the third pair of wave plates are parallel to the optical axes of the first pair of wave plates, and the optical axes of the 6 crystal wave plates are parallel to the light passing surface; the thickness parameters of the quartz wave plate and the magnesium fluoride wave plate are calculated through the Jones matrix, and the half-wave plate with the precision of 600-2700nm wave band higher than 1/360 is obtained.
Drawings
FIG. 1 is a block diagram of the present invention; fig. 2 is a delay amount curve according to the present invention.
Detailed Description
As shown in the figure I, 3 quartz crystal wave plates 1, 3 and 5 with the same thickness and 3 magnesium fluoride crystal wave plates 2, 4 and 6 with the same thickness are adopted, wherein optical axes of the 1, 2, 3, 4, 5 and 6 wave plates are orthogonal, namely the optical axes are mutually vertical, the wave plates are combined, the equivalent optical axes of the first pair (1 and 2) and the second pair (3 and 4) of wave plates form an included angle theta, the optical axes of the third pair (5 and 6) of equivalent wave plates are mutually parallel to the optical axes of the first pair (1 and 2) of wave plates, the optical axes of the 6 crystal wave plates are both parallel to a light-passing surface, the thicknesses of the quartz wave plates and the magnesium fluoride wave plates are calculated through a Jones matrix, the obtained retardation curve is shown in figure 2, the unit of a vertical coordinate is, the unit of an abscissa is um, and the retardation accuracy of 600-2700.
Claims (2)
1. The 600-2700nm waveband achromatic half-wave plate comprises three quartz crystal wave plates with the same thickness and three magnesium fluoride crystal wave plates with the same thickness; the assembly structure is that the quartz crystal wave plates and the magnesium fluoride crystal wave plates are orthogonally combined into 3 pairs of wave plates, the equivalent optical axes of the first pair of wave plates and the second pair of wave plates form an included angle of 0-180 degrees, the equivalent optical axes of the third pair of wave plates are parallel to the equivalent optical axes of the first pair of wave plates, and the optical axes of the 6 crystal wave plates are parallel to the light-passing surface; the thickness parameters of the quartz wave plate and the magnesium fluoride wave plate are calculated through the Jones matrix, and the half-wave plate with the precision of 600-2700nm wave band higher than 1/360 is obtained, and the method is characterized in that: the two-half wave plate designed by the invention has the retardation variation of <1 DEG in the whole wavelength range of 600-2700nm, namely the retardation precision is superior to lambda/360.
2. The 600-2700nm wavelength band achromatic half wave plate of claim 1, wherein: the connection means may be optical glue or glue gluing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011087349.5A CN112099126B (en) | 2020-10-13 | 2020-10-13 | 600-once-used 2700nm waveband achromatic half-wave plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011087349.5A CN112099126B (en) | 2020-10-13 | 2020-10-13 | 600-once-used 2700nm waveband achromatic half-wave plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112099126A true CN112099126A (en) | 2020-12-18 |
| CN112099126B CN112099126B (en) | 2022-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011087349.5A Active CN112099126B (en) | 2020-10-13 | 2020-10-13 | 600-once-used 2700nm waveband achromatic half-wave plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112099126B (en) |
Citations (14)
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2020
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| CN105527669A (en) * | 2015-12-31 | 2016-04-27 | 武汉光电工业技术研究院有限公司 | Ternary broadband achromatic aberration composite wave plate and manufacturing method thereof |
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| CN107783308A (en) * | 2017-10-30 | 2018-03-09 | 福建福晶科技股份有限公司 | A kind of broadband radial polarisation converter |
| CN109000798A (en) * | 2018-05-23 | 2018-12-14 | 华中科技大学 | A kind of Polarization Modulation structure and polarization measurement system |
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| Publication number | Publication date |
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| CN112099126B (en) | 2022-06-24 |
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Effective date of registration: 20240118 Address after: 350000 on the first floor of Building 2, No. 3 Yaoxi Road, Nanyu Town, Minhou County, Fuzhou City, Fujian Province Patentee after: Fujian Zhiqi Photon Technology Co.,Ltd. Address before: 350003 Building 9, area F, 89 software Avenue, Fuzhou City, Fujian Province Patentee before: FUJIAN CASTECH CRYSTALS Inc. |
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