CN109283697A - A kind of laser polarization direction converter - Google Patents
A kind of laser polarization direction converter Download PDFInfo
- Publication number
- CN109283697A CN109283697A CN201811401324.0A CN201811401324A CN109283697A CN 109283697 A CN109283697 A CN 109283697A CN 201811401324 A CN201811401324 A CN 201811401324A CN 109283697 A CN109283697 A CN 109283697A
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- Prior art keywords
- reflecting mirror
- plane
- laser
- angle
- face
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/02—Catoptric systems, e.g. image erecting and reversing system
- G02B17/06—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror
- G02B17/0668—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror having non-imaging properties
Abstract
The present invention discloses a kind of laser polarization direction converter, and 99% reflecting mirror I, reflecting mirror II, reflecting mirror III, reflecting mirror IV, reflecting mirror V, reflecting mirror VI and reflecting mirror VII are not less than including reflectivity；Realize that the posture of seven high reflectivity mirrors is fixed with integration techno logy by using using high-precision processing, the present invention can be realized wide spectrum laser polarization direction and be rotated by 90 °, and realize that output laser is coaxially exported with incident light.
Description
Technical field
The invention belongs to the technical fields of laser application, and in particular to a kind of laser polarization direction converter.
Background technique
Semiconductor laser has that small in size, light-weight, direct modulation, electro-optical efficiency is high, high reliability etc. is excellent
Point.It has been covered from visible light to terahertz wave band using the laser of semi-conducting material manufacturing.Especially short-wave infrared and medium wave is red
Outer semiconductor laser has important application in national defence.The namely middle infrared quantum grade of medium-wave infrared semiconductor laser
Join laser.
In practical applications, high power medium-wave infrared semiconductor laser spectral line is wider, up to 100nm or more.Utilize biography
The polarizer of system, such as half-wave plate, Faraday polarization apparatus etc. realize the device of polarization direction conversion by changing light field phase delay
Part, the polarization direction for controlling wide spectrum laser is relatively difficult, for requiring laser outbound course and incident direction to keep coaxial same
In the case where, it is difficult to realize efficient polarization direction conversion.
Summary of the invention
In view of this, the present invention provides a kind of laser polarization direction converters, so that infrared band is partly led in wide spectrum
The transmitting laser of body laser realizes that outbound course keeps coaxial in the same direction with incident direction after conversion, and polarization direction energy
Enough high efficiency conversions.
Realize that technical scheme is as follows:
A kind of laser polarization direction converter is not less than 99% reflecting mirror I, reflecting mirror II, reflection including reflectivity
Mirror III, reflecting mirror IV, reflecting mirror V, reflecting mirror VI and reflecting mirror VII；
O-xyz 3 D stereo geometric coordinate system is established, reflecting mirror I is located at o point, and plane where reflecting mirror I and the face oxy press from both sides
45 ° of angle, and with 45 ° of the plane included angle oyz, reflecting mirror II is located at the direction+z of reflecting mirror I；Plane and the face oxy where reflecting mirror II
45 ° of angle, and with 45 ° of the plane included angle oxz, reflecting mirror III is located at the direction+y of reflecting mirror II, plane where reflecting mirror III with
45 ° of the face oxz angle, and with 45 ° of the plane included angle oxy, reflecting mirror IV is located at the direction-z of reflecting mirror III, flat where reflecting mirror IV
45 ° of face and the face oxz angle, and with 45 ° of the plane included angle oxy, reflecting mirror V is located at the direction+y of reflecting mirror IV, puts down where reflecting mirror V
45 ° of face and the face oxz angle, and with 45 ° of the plane included angle oyz, reflecting mirror VI is located at the direction+x of reflecting mirror V, the place reflecting mirror VI
45 ° of plane and the face oxz angle, and with 45 ° of the plane included angle oyz, reflecting mirror VII is located at the direction-y of reflecting mirror VI, reflecting mirror
45 ° of plane where VII and the face oxz angle, and with 45 ° of the plane included angle oyz；
It sets incident laser to transmit along positive direction of the x-axis, polarization direction passes after reflecting mirror I reflection along z-axis positive direction
Defeated direction is along z-axis positive direction, and polarization direction is along positive direction of the x-axis, after reflecting mirror II reflection, transmission direction along positive direction of the y-axis,
Polarization direction is along positive direction of the x-axis, and after reflecting mirror III reflection, transmission direction is along z-axis negative direction, and polarization direction is along x-axis pros
To after penetrating mirror IV reflection, transmission direction is reflected along positive direction of the x-axis by reflecting mirror V along positive direction of the y-axis, polarization direction
Afterwards, transmission direction is along positive direction of the x-axis, and polarization direction is along positive direction of the y-axis, and after reflecting mirror VI reflection, transmission direction is negative along y-axis
Direction, polarization direction is along positive direction of the x-axis, and after reflecting mirror VII reflection, transmission direction is along positive direction of the x-axis, polarization direction edge
Positive direction of the y-axis.
Further, the laser spectral coverage of the incident laser is all band.
The utility model has the advantages that
The present invention passes through the reflection of seven high reflectivity mirrors, the feelings coaxial in the same direction before and after the conversion of laser transmission direction
Under condition, the polarization direction of laser is changed, realizes the high efficiency conversion of infrared band laser polarization direction in wide spectrum, partially
Vibration direction transfer efficiency can reach 90% or more, and have preferable beam quality.
The laser spectral coverage that the present invention is applicable in is all band, is related to from ultraviolet light, visible light and infrared light.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Fig. 2 (a) is that structure of the embodiment of the present invention designs main view.
Fig. 2 (b) is that structure of the embodiment of the present invention designs top view.
Fig. 3 is each reflector position schematic diagram of the present invention.
Wherein, 1- reflecting mirror I, 2- reflecting mirror II, 3- reflecting mirror III, 4- reflecting mirror IV, 5- reflecting mirror V, 6- are anti-
Penetrate mirror VI, 7- reflecting mirror VII.
Specific embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
The present invention provides a kind of laser polarization direction converters, and laser polarization can be achieved using seven total reflection mirror leaded lights
The conversion of 90 degree of direction, the installation site by designing reflecting mirror realizes that output laser is coaxially exported with incident light, and polarization conversion
Efficiency can reach 90% or more, guarantee preferable beam quality.Laser spectral coverage of the present invention is all band, is related to from ultraviolet
Light, visible light and infrared light.
As shown in Figure 1, the present invention program specifically includes the reflecting mirror I, reflecting mirror II, reflection that reflectivity is not less than 99%
Mirror III, reflecting mirror IV, reflecting mirror V, reflecting mirror VI and reflecting mirror VII；In seven reflecting mirrors, reflecting mirror II and reflecting mirror III with
For other reflecting mirrors not in same level, every reflecting mirror is all 90 degree of reflections.
As shown in figure 3, establishing o-xyz 3 D stereo geometric coordinate system, reflecting mirror I is located at o point, plane where reflecting mirror I
With 45 ° of the face oxy angle, and with 45 ° of the plane included angle oyz, reflecting mirror II is located at the direction+z of reflecting mirror I；It is flat where reflecting mirror II
45 ° of face and the face oxy angle, and with 45 ° of the plane included angle oxz, reflecting mirror III is located at the direction+y of reflecting mirror II, reflecting mirror III institute
In 45 ° of plane and the face oxz angle, and with 45 ° of the plane included angle oxy, reflecting mirror IV is located at the direction-z of reflecting mirror III, reflecting mirror
45 ° of plane where IV and the face oxz angle, and with 45 ° of the plane included angle oxy, reflecting mirror V is located at the direction+y of reflecting mirror IV, reflection
45 ° of plane and the face oxz angle where mirror V, and with 45 ° of the plane included angle oyz, reflecting mirror VI is located at the direction+x of reflecting mirror V, reflection
45 ° of plane and the face oxz angle where mirror VI, and with 45 ° of the plane included angle oyz, reflecting mirror VII is located at the direction-y of reflecting mirror VI,
45 ° of plane and the face oxz angle where reflecting mirror VII, and with 45 ° of the plane included angle oyz；
It sets incident laser to transmit along positive direction of the x-axis, polarization direction passes after reflecting mirror I reflection along z-axis positive direction
Defeated direction is along z-axis positive direction, and polarization direction is along positive direction of the x-axis, after reflecting mirror II reflection, transmission direction along positive direction of the y-axis,
Polarization direction is along positive direction of the x-axis, and after reflecting mirror III reflection, transmission direction is along z-axis negative direction, and polarization direction is along x-axis pros
To after penetrating mirror IV reflection, transmission direction is reflected along positive direction of the x-axis by reflecting mirror V along positive direction of the y-axis, polarization direction
Afterwards, transmission direction is along positive direction of the x-axis, and polarization direction is along positive direction of the y-axis, and after reflecting mirror VI reflection, transmission direction is negative along y-axis
Direction, polarization direction is along positive direction of the x-axis, and after reflecting mirror VII reflection, transmission direction is along positive direction of the x-axis, polarization direction edge
Positive direction of the y-axis.
Reflecting mirror of the present invention is Coating Materials, can be realized wide spectrum laser reflection, and reflectivity is not less than 99%.
In the present embodiment, the laser wavelength of incidence is 4.6 μm, and breadth of spectrum line is about 100nm.Light source is medium-wave infrared
Semiconductor laser, has pulse and continuous fan-out capability, output power about 1W, and output laser beam bore is 4mm, the angle of divergence
For 3mrad.The Laser Power Devices of use can realize pulse and the output of continuous both of which.In the horizontal direction, laser is inclined for incident light
Vibration direction be s light, through reflecting mirror I reflection rear direction change 90 degree, transmission direction vertical direction, after reflected through reflecting mirror II
Afterwards, not in same level, exporting laser polarization direction at this time is p light for this reflected light and incident light, after through reflecting mirror III
Laser elevation is reduced to initial plane with reflecting mirror IV, laser polarization direction is p light.Laser is passing through reflecting mirror V, reflecting mirror VI
After reflecting mirror VII leaded light, output laser direction is consistent with incident light direction, and keeps coaxial and export, laser direction p
Light.Laser polarization direction is just completed at this time to be rotated by 90 °, and is exported laser direction and kept coaxial in the same direction with incident laser direction
Transmission.
The present embodiment is shown for structure arrangement such as Fig. 2 (a) and Fig. 2 (b) of seven reflecting mirrors, reflecting mirror I, reflecting mirror
II, reflecting mirror III, reflecting mirror IV, reflecting mirror V, reflecting mirror VI and reflecting mirror VII posture position are fixed, and are being tied by glue sticking
On component.Design of Mechanical Structure uses integrated design, keeps preferable stability.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (2)
1. a kind of laser polarization direction converter, which is characterized in that be not less than 99% reflecting mirror I, reflection including reflectivity
Mirror II, reflecting mirror III, reflecting mirror IV, reflecting mirror V, reflecting mirror VI and reflecting mirror VII；
O-xyz 3 D stereo geometric coordinate system is established, reflecting mirror I is located at o point, plane and the face oxy angle where reflecting mirror I
45 °, and with 45 ° of the plane included angle oyz, reflecting mirror II is located at the direction+z of reflecting mirror I；Plane where reflecting mirror II and the face oxy press from both sides
45 ° of angle, and with 45 ° of the plane included angle oxz, reflecting mirror III is located at the direction+y of reflecting mirror II, plane and oxz where reflecting mirror III
45 ° of face angle, and with 45 ° of the plane included angle oxy, reflecting mirror IV is located at the direction-z of reflecting mirror III, plane where reflecting mirror IV
With 45 ° of the face oxz angle, and with 45 ° of the plane included angle oxy, reflecting mirror V is located at the direction+y of reflecting mirror IV, plane where reflecting mirror V
With 45 ° of the face oxz angle, and with 45 ° of the plane included angle oyz, reflecting mirror VI is located at the direction+x of reflecting mirror V, flat where reflecting mirror VI
45 ° of face and the face oxz angle, and with 45 ° of the plane included angle oyz, reflecting mirror VII is located at the direction-y of reflecting mirror VI, reflecting mirror VII
45 ° of place plane and the face oxz angle, and with 45 ° of the plane included angle oyz.
2. a kind of laser polarization direction converter as described in claim 1, which is characterized in that the laser of the incident laser is composed
Section is all band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811401324.0A CN109283697A (en) | 2018-11-22 | 2018-11-22 | A kind of laser polarization direction converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811401324.0A CN109283697A (en) | 2018-11-22 | 2018-11-22 | A kind of laser polarization direction converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109283697A true CN109283697A (en) | 2019-01-29 |
Family
ID=65173158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811401324.0A Pending CN109283697A (en) | 2018-11-22 | 2018-11-22 | A kind of laser polarization direction converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109283697A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006005325B4 (en) * | 2006-02-07 | 2011-01-27 | Karlsruher Institut für Technologie | Ring resonator with prism combination |
| CN203863214U (en) * | 2014-04-04 | 2014-10-08 | 深圳市大族激光科技股份有限公司 | Circular polarization optical converter |
| CN204331158U (en) * | 2015-01-12 | 2015-05-13 | 兰州理工大学 | A kind of based on level crossing repeatedly antarafacial reflection laser polarization modulating device |
-
2018
- 2018-11-22 CN CN201811401324.0A patent/CN109283697A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006005325B4 (en) * | 2006-02-07 | 2011-01-27 | Karlsruher Institut für Technologie | Ring resonator with prism combination |
| CN203863214U (en) * | 2014-04-04 | 2014-10-08 | 深圳市大族激光科技股份有限公司 | Circular polarization optical converter |
| CN204331158U (en) * | 2015-01-12 | 2015-05-13 | 兰州理工大学 | A kind of based on level crossing repeatedly antarafacial reflection laser polarization modulating device |
Non-Patent Citations (1)
| Title |
|---|
| 赵磊: ""基于平面镜多次异面反射调制激光偏振的理论设计"", 《河南大学学报（自然科学版）》 * |
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Application publication date: 20190129 |