CN203275784U - Phase retarder with continuously adjustable broadband - Google Patents
Phase retarder with continuously adjustable broadband Download PDFInfo
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- CN203275784U CN203275784U CN201320262236.3U CN201320262236U CN203275784U CN 203275784 U CN203275784 U CN 203275784U CN 201320262236 U CN201320262236 U CN 201320262236U CN 203275784 U CN203275784 U CN 203275784U
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- monocrystalline
- wedge
- angle
- wedge sheet
- angle sheet
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Abstract
The utility model relates to a phase retarder with a continuously adjustable broadband. The phase retarder comprises a first monocrystalline wedge-angle sheet, a second monocrystalline wedge-angle sheet, a crystal support, and a micrometer head; the first monocrystalline wedge-angle sheet is fixedly connected with the crystal support; the second monocrystalline wedge-angle sheet is movably installed at the crystal support; the second monocrystalline wedge-angle sheet and the first monocrystalline wedge-angle sheet are installed in a complementary parallel mode; and the second monocrystalline wedge-angle sheet is connected with the micrometer head. When the micrometer head is adjusted, the second monocrystalline wedge-angle sheet is moved up and down continuously relatively to the first monocrystalline wedge-angle sheet. The provided phase retarder has the characteristics of simple structure, low cost, and convenient usage and the like; continuous adjusting of an ultra wide band can be realized and the precision of phase retardation is high. The provided phase retarder can be widely applied to scientific experiments and product research and development in fields of laser, optical fiber communication, precise measurement and sensing and the like.
Description
Technical field
The utility model relates to optical field, the continuous adjustable phase retarder in especially a kind of broadband.
Background technology
Phase delay device can make and produce a relative phase delay between two mutually perpendicular linearly polarized lights of polarized light, thereby changes the polarisation of light attitude, so their important roles in polarization technology.Under normal conditions, wave plate in phase delay device all only produces a certain definite phase place variation to the incident light of a certain specific wavelength, but in the polarized systems in the fields such as laser, optical fiber communication, precision measurement and sensing, usually input the wideband polarization ripple that wavelength coverage is larger, because different wave length phase delay is different, thereby can not export simultaneously whole broadband wave polarization light.
By above analysis as can be known, common wave plate is conditional to the broadband of input beam, ways of addressing this issue generally has: and the broadband cable adjustable is tired-and the Babinet phase compensator can be adjustable within the specific limits to phase-delay quantity, but require the width of incident light can not be too wide, and complex structure, cost is higher; Rotary phase place compensator can be by the rotation composite wave plate to realize the adjustable continuously of phase-delay quantity, though can use in angle pencil of ray, complicated operation postpones precision not high.
The utility model content
Technical problem to be solved in the utility model be proposed a kind of simple in structure, with low cost, easy to use and can realize the continuously adjustable phase delay device of ultra broadband.
for solving the problems of the technologies described above, the continuous adjustable phase retarder in a kind of broadband that the utility model proposes, comprise the first monocrystalline angle of wedge sheet, the second monocrystalline angle of wedge sheet, crystal cartridge and micrometer head, described the first monocrystalline angle of wedge sheet is fixedly connected with described crystal cartridge, described the second monocrystalline angle of wedge sheet is movably arranged on described crystal cartridge, described the second monocrystalline angle of wedge sheet is the complementary parallel installation of the angle of wedge with the first monocrystalline angle of wedge sheet, described the second monocrystalline angle of wedge sheet connects described micrometer head, regulate described micrometer head, described the second monocrystalline angle of wedge sheet is with respect to described the first monocrystalline angle of wedge sheet up and down continuous moving.
The structure of described first, second monocrystalline angle of wedge sheet is identical, and the angle of wedge is respectively 2 °～3 °.
The utility model also comprises shell, bonnet and diaphragm, described the first monocrystalline angle of wedge sheet, the second monocrystalline angle of wedge sheet, crystal cartridge are installed in described shell, described bonnet is connected with the shell outer, has view window on described bonnet, on described view window, diaphragm is installed.
The utility model is different from rope and tires out-the Babinet phase compensator, can realize that the broadband of angle pencil of ray is adjustable continuously, and simple in structure, with low cost; The utility model also is different from rotary phase place compensator, can realize high-precision phase delay, and easy to operate.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is further described in detail.
Fig. 1 is the structure explosive view of the continuous adjustable phase retarder in a kind of broadband of the present utility model;
Fig. 2 is first, second monocrystalline angle of wedge sheet relative position relation schematic diagram of the present utility model.
Embodiment
As shown in Figure 1, the first monocrystalline angle of wedge sheet 2, the second monocrystalline angle of wedge sheet 5 are the angle of wedge sheet of two single crystal quartz materials processings, crystal cartridge 4 is used for quartz wafer is installed, the first monocrystalline angle of wedge sheet 2 is fixed on a side of crystal cartridge 4, the second monocrystalline angle of wedge sheet 5 embeds the opposite side that is arranged on crystal cartridge 4, and the second monocrystalline angle of wedge sheet 5 connects micrometer head 3.Regulate described micrometer head 3, the second monocrystalline angle of wedge sheet 5 is with respect to the first monocrystalline angle of wedge sheet continuous moving Shang Xia 2.Shell 1, bonnet 7 and 6 pairs of internal components of diaphragm play fixing and protective effect.The first monocrystalline angle of wedge sheet 2, the second monocrystalline angle of wedge sheet 4, crystal cartridge 4 are installed in shell 1, and bonnet 7 is connected with shell 1 outer, has view window on bonnet 7, and diaphragm 6 is installed on view window.Micrometer head 3 is that a degree of regulation is the displacement measurement device of 1 micron.The phase-delay quantity of quartz wave-plate is mainly decided by the light path of light by quartz, light path by quartz is again that the thickness by quartz determines, just can change the phase-delay quantity of quartz wave-plate by the thickness that changes quartz wave-plate like this, utilize the differential head can be adjustable continuously to the thickness of quartz wave-plate, therefore just realized adjustable continuously to phase retardation.The utlity model has the characteristics such as simple in structure, with low cost, easy to use, can realize that ultra broadband is continuously adjustable and precision phase delay is very high.
As shown in Figure 2, the second monocrystalline angle of wedge sheet 5 is the complementary parallel installation of the angle of wedge with the first monocrystalline angle of wedge sheet 2.If polarized light is divided into d by the distance of the first monocrystalline angle of wedge sheet 2 and the second monocrystalline angle of wedge sheet 5
1And d
2, in 2 °～3 ° scopes, and thickness is also little due to the locking angle of angle of wedge sheet, can obtain like this phase differential that light produces after by quartz wave-plate to be:
Wherein Δ n is the refringence of o light and e light, Δ d=d
1-d
2, by can change light by the light path of two angle of wedge sheets perpendicular to mobile the second 5 of monocrystalline angle of wedge sheets in the incident light plane, thereby change the size of Δ d.Studies show that, in certain wave band, refractive index and the wavelength of quartz crystal are linear, therefore by adjustable to the quartz wave plate thickness linearity, can realize light wave phase retardation adjustable continuously in certain wave band.The utlity model has the characteristics such as simple in structure, with low cost, easy to use, can realize that ultra broadband is continuously adjustable and precision phase delay is very high.
It should be noted last that, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment, the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (3)
1. continuous adjustable phase retarder in broadband, it is characterized in that, comprise the first monocrystalline angle of wedge sheet, the second monocrystalline angle of wedge sheet, crystal cartridge and micrometer head, described the first monocrystalline angle of wedge sheet is fixedly connected with described crystal cartridge, described the second monocrystalline angle of wedge sheet is movably arranged on described crystal cartridge, described the second monocrystalline angle of wedge sheet is the complementary parallel installation of the angle of wedge with the first monocrystalline angle of wedge sheet, described the second monocrystalline angle of wedge sheet connects described micrometer head, regulate described micrometer head, described the second monocrystalline angle of wedge sheet is with respect to described the first monocrystalline angle of wedge sheet up and down continuous moving.
2. the continuous adjustable phase retarder in broadband according to claim 1, is characterized in that, the structure of described first, second monocrystalline angle of wedge sheet is identical, and the angle of wedge is respectively 2 °～3 °.
3. the continuous adjustable phase retarder in broadband according to claim 1 and 2, it is characterized in that, also comprise shell, bonnet and diaphragm, described the first monocrystalline angle of wedge sheet, the second monocrystalline angle of wedge sheet, crystal cartridge are installed in described shell, described bonnet is connected with the shell outer, have view window on described bonnet, on described view window, diaphragm is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320262236.3U CN203275784U (en) | 2013-05-14 | 2013-05-14 | Phase retarder with continuously adjustable broadband |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320262236.3U CN203275784U (en) | 2013-05-14 | 2013-05-14 | Phase retarder with continuously adjustable broadband |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203275784U true CN203275784U (en) | 2013-11-06 |
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ID=49506159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320262236.3U Expired - Fee Related CN203275784U (en) | 2013-05-14 | 2013-05-14 | Phase retarder with continuously adjustable broadband |
Country Status (1)
| Country | Link |
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| CN (1) | CN203275784U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9720237B1 (en) | 2016-01-27 | 2017-08-01 | Microsoft Technology Licensing, Llc. | Mixed environment display device and waveguide cross-coupling suppressors |
| CN112255779A (en) * | 2020-11-27 | 2021-01-22 | 中国科学院微电子研究所 | Large-caliber compact type Soire-Babinet compensator device |
-
2013
- 2013-05-14 CN CN201320262236.3U patent/CN203275784U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9720237B1 (en) | 2016-01-27 | 2017-08-01 | Microsoft Technology Licensing, Llc. | Mixed environment display device and waveguide cross-coupling suppressors |
| CN112255779A (en) * | 2020-11-27 | 2021-01-22 | 中国科学院微电子研究所 | Large-caliber compact type Soire-Babinet compensator device |
| CN112255779B (en) * | 2020-11-27 | 2022-05-24 | 中国科学院微电子研究所 | Large-caliber compact type Soire-Babinet compensator device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20140514 |