CN115268001A - Incident beam adjusting mechanism suitable for off-axis integration cavity - Google Patents
Incident beam adjusting mechanism suitable for off-axis integration cavity Download PDFInfo
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- CN115268001A CN115268001A CN202210890311.4A CN202210890311A CN115268001A CN 115268001 A CN115268001 A CN 115268001A CN 202210890311 A CN202210890311 A CN 202210890311A CN 115268001 A CN115268001 A CN 115268001A
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- adjusting mechanism
- adjusting
- angle adjusting
- mounting plate
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
- G02B7/198—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors with means for adjusting the mirror relative to its support
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
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- Optics & Photonics (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
Abstract
The invention discloses an incident beam adjusting mechanism suitable for an off-axis integrating cavity, which comprises a cage type system mounting plate, a beam adjusting plate and a beam adjusting plate, wherein the cage type system mounting plate is fixed on a polished rod of a cage type system; the angle adjusting mechanism is connected to the cage system mounting plate through the elastic supporting mechanism; the adjusting device is fixedly connected with the angle adjusting mechanism; the slope adjusting mechanism is rotatably arranged at one end of the angle adjusting mechanism, which is far away from the cage system mounting plate, through a bearing; the linear track sliding block mechanism is arranged on the slope adjusting mechanism; and the laser collimator mounting seat is mounted on the linear track sliding block mechanism. The invention can adjust the slope adjusting mechanism to match with the off-axis integral cavity under the condition of determining the structural parameters of the off-axis integral cavity, can adjust the diameter of the discrete facula of the off-axis integral cavity by adjusting the linear track sliding block mechanism, and can adjust the ellipticity of the discrete facula of the off-axis integral cavity by adjusting the angle adjusting mechanism, thereby greatly reducing the adjusting freedom degree of the traditional four-dimensional adjusting platform and simplifying the adjusting process of operators.
Description
Technical Field
The invention relates to the technical field of optical mechanical elements, in particular to an incident beam adjusting mechanism suitable for an off-axis integrating cavity.
Background
The off-axis integral cavity technology is a technology for analyzing intracavity information by injecting laser into an optical resonant cavity, collecting weak energy signals transmitted during each reflection by utilizing multiple reflections of the laser between two cavity mirrors. The method is commonly used for detecting trace gas in a laboratory, measuring the high-precision reflectivity of a high-reflectivity reflector and researching the isotope absorption spectrum. The angle and position of the incident laser directly affect the shape and size of the off-axis spot, and when the off-axis spot is in the form of the largest circle limited by the diameter of the lens, the off-axis integrating cavity can achieve the best performance, so that the performance (signal intensity, detection limit, noise level and the like) of the off-axis integrating cavity is obviously affected by the angle and position of the incident laser.
At present, in most off-axis integrating cavities in the debugging stage, the adjustment of the incident laser is performed by a four-dimensional adjusting table, and the adjustment of four dimensions of the X direction, the Y direction, the alpha angle and the beta angle can be provided for the incident laser. Or two mirrors to provide two adjustments of the angle α and the angle β in the laser beam path, can be regarded as a variation of the first solution.
According to the 4-dimensional adjustment scheme, the adjustable parameters are too many, and in the process of adjusting the discrete light spots of the off-axis integrating cavity, researchers often have difficulty in finding the optimal parameter configuration. And the 4 parameters are mutually coupled and influenced, so that the aim of accurately adjusting the scattered light spot to the circle with the maximum diameter is difficult. As early as 1964, d.herriott et al have studied the incidence conditions under which the off-axis integrating cavity achieves the optimal spot distribution. By means of a mathematical transformation, the following conditions can be obtained:
in the formula, x0、y0Respectively, the x-direction offset amount and the y-direction offset amount, x'0And y'0Respectively, the angle alpha and the angle beta of the incident laser light, f is the focal length of the resonator mirror, and d is the length of the resonator. Since f and d are constants depending on the resonator structure, for a given resonator，x0And y0May be determined by a determined slope coefficient
Are linked together. The adjustment parameters of the entire incident light can thus be simplified to two: x is the number of0And x'0。
Based on the above technical problems, a skilled person in the art needs to develop an incident beam adjusting mechanism capable of completely adjusting incident laser beams through two degrees of freedom, greatly reducing adjustment parameters compared with a four-dimensional adjusting table, simplifying the adjustment process of an operator, and improving the practicability and suitable for an off-axis integral cavity.
Disclosure of Invention
The invention aims to provide an incident beam adjusting mechanism which can realize complete adjustment of incident laser through two degrees of freedom, greatly reduces adjustment parameters compared with a four-dimensional adjusting table, simplifies the adjustment process of operators and improves the practicability and is suitable for an off-axis integrating cavity.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention relates to an incident beam adjusting mechanism suitable for an off-axis integrating cavity, which comprises:
the cage system mounting plate is fixed on a polished rod of the cage system; and
the angle adjusting mechanism is connected to the cage system mounting plate through an elastic supporting mechanism, and the elastic supporting mechanism is used for providing tension between the cage system mounting plate and the angle adjusting mechanism;
the adjusting device is fixedly connected to the angle adjusting mechanism and can adjust the inclination angle of the angle adjusting mechanism;
the adjustment mechanism further comprises:
the slope adjusting mechanism is rotatably arranged at one end of the angle adjusting mechanism far away from the cage system mounting plate through a bearing; and
the linear track sliding block mechanism is arranged on the slope adjusting mechanism, and the slope adjusting mechanism and the linear track sliding block mechanism can incline along with the angle adjusting mechanism to form linkage;
and the laser collimator mounting seat is mounted on the linear track sliding block mechanism.
Furthermore, the angle adjusting mechanism comprises an angle adjusting table board, and the adjusting device is connected to the angle adjusting table board through an inner hexagon screw;
and the locking nut is arranged at the bottom of the angle adjusting table board, and is rotated clockwise or anticlockwise to lock or unlock the slope adjusting mechanism.
Further, the slope adjusting mechanism comprises a slope adjusting table surface, and the slope adjusting table surface is parallel to the angle adjusting table surface.
Furthermore, the inner ring of the bearing is connected to the angle adjustment table surface through a clamp spring, and the outer ring of the bearing is connected to the slope adjustment table surface through a first fastening screw.
Further, the cage system mounting plate is connected to a polished rod of a 30mm standard cage system through four second fastening screws, one side of the angle adjusting mechanism and the cage system mounting plate is supported and limited by two steel balls, and the other side of the angle adjusting mechanism is supported and limited by the adjusting device.
Furthermore, the elastic support mechanism comprises three groups of springs arranged between the cage system mounting plate and the angle adjusting mechanism, and the three groups of springs tension the cage system mounting plate and the angle adjusting mechanism;
one end of the spring is connected to the cage system mounting plate through a third fastening screw, and the other end of the spring is connected to the angle adjustment table top through a fourth fastening screw.
Further, the linear track slider mechanism comprises a linear track; and
the laser collimator comprises a linear track, a sliding block matched with the linear track, wherein the linear track is connected to the slope adjustment table board through a second inner hexagon screw, and the laser collimator mounting seat is fixed on the sliding block through a third inner hexagon screw.
Preferably, the adjusting device is a differential head.
In the above technical solution, the incident light beam adjusting mechanism suitable for the off-axis integrating cavity provided by the present invention has the following beneficial effects:
the incident beam adjusting mechanism suitable for the off-axis integrating cavity can adjust the slope adjusting mechanism to be matched with the off-axis integrating cavity under the condition that the structural parameters of the off-axis integrating cavity are determined, the diameter of discrete light spots of the off-axis integrating cavity can be adjusted by adjusting the linear track sliding block mechanism, and the ellipticity of the discrete light spots of the off-axis integrating cavity is adjusted by the angle adjusting mechanism; the invention greatly reduces the adjustment freedom degree of the traditional four-dimensional adjustment platform, simplifies the adjustment process of operators and has higher practicability.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is a perspective view of an overall structure of an incident light beam adjusting mechanism suitable for an off-axis integrating cavity according to an embodiment of the present invention;
fig. 2 is an expanded schematic view of an overall structure of an incident light beam adjusting mechanism suitable for an off-axis integrating cavity according to an embodiment of the present invention;
fig. 3 is a side view of an incident beam adjusting mechanism suitable for an off-axis integrator chamber according to an embodiment of the present invention.
Description of the reference numerals:
1. a cage system mounting plate; 2. an elastic support mechanism; 3. an angle adjusting mechanism; 4. an adjustment device; 5. a bearing; 6. a slope adjustment mechanism; 7. a linear track slider mechanism; 8. a laser collimator mounting base;
101. a second fastening screw; 102. steel balls;
201. a spring; 202. a third fastening screw; 203. a fourth fastening screw;
301. an angle adjusting table-board; 302. a socket head cap screw; 303. locking the nut;
501. a clamp spring;
601. a slope adjustment table-board; 602. a first fastening screw;
701. a linear track; 702. a second socket head cap screw; 703. a third socket head cap screw; 704. a slide block.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
See fig. 1-3;
the invention relates to an incident beam adjusting mechanism suitable for an off-axis integrating cavity, which comprises:
the cage system mounting plate 1 is fixed on a polished rod of the cage system; and
the angle adjusting mechanism 3 is connected to the cage system mounting plate 1 through an elastic support mechanism 2, and the elastic support mechanism 2 is used for providing tension between the cage system mounting plate 1 and the angle adjusting mechanism 3; the angle adjusting mechanism 3 provided by this embodiment is x0An angle adjusting mechanism;
the adjusting device 4 is fixedly connected to the angle adjusting mechanism 3, and the inclination angle of the angle adjusting mechanism 3 can be adjusted by the adjusting device 4;
the adjustment mechanism further comprises:
a slope adjusting mechanism 6 which is rotatably arranged at one end of the angle adjusting mechanism 3 far away from the cage system mounting plate 1 through a bearing 5; and
the linear track sliding block mechanism 7 is arranged on the slope adjusting mechanism 6, and the slope adjusting mechanism 6 and the linear track sliding block mechanism 7 can incline along with the angle adjusting mechanism 3 to form linkage;
and the laser collimator mounting seat 8 is mounted on the linear track sliding block mechanism 7.
By way of further introduction to this embodiment, the angle adjusting mechanism 3 includes an angle adjusting table 301, and the adjusting device 4 is connected to the angle adjusting table 301 through a socket head cap screw 302;
and a locking nut 303 arranged at the bottom of the angle adjusting table 301, wherein the locking nut 303 is rotated clockwise or anticlockwise to lock or unlock the slope adjusting mechanism 6. When the angle of the slope adjusting mechanism 6
At this time, the lock nut 303 is rotated to lock the slope adjusting mechanism 6.
By way of further introduction to the present embodiment, the slope adjustment mechanism 6 includes a slope adjustment table 601, and the slope adjustment table 601 is parallel to the angle adjustment table 301.
As a further introduction to this embodiment, the inner ring of the bearing 5 is connected to the angle adjustment table 301 through the snap spring 501, and the outer ring of the bearing 5 is connected to the slope adjustment table 601 through the first fastening screw 602.
By way of further illustration of this embodiment, the cage mounting plate 1 is connected to the polished rod of a 30mm standard cage by four second fastening screws 101, one side of the angle adjusting mechanism 3 and the cage mounting plate 1 is supported and limited by two steel balls 102, and the other side of the angle adjusting mechanism 3 is supported and limited by the adjusting device 4. The cage mounting plate 1 does not produce any change in degrees of freedom relative to a 30mm standard cage system when installed.
As a further introduction to this embodiment, the elastic support mechanism 2 includes three sets of springs 201 disposed between the cage system mounting plate 1 and the angle adjustment mechanism 3, and the three sets of springs 201 tension the cage system mounting plate 1 and the angle adjustment mechanism 3;
one end of the spring 201 is connected to the cage system mounting plate 1 by a third fastening screw 202, and the other end of the spring 201 is connected to the angle adjustment table 301 by a fourth fastening screw 203.
By way of further introduction to the present embodiment, the linear rail slider mechanism 7 includes a linear rail 701; and
the linear track 701 is connected to the slope adjustment table 601 through a second socket head cap screw 702, and the laser collimator mounting base 8 is fixed to the slider 704 through a third socket head cap screw 703.
As a preferred technical solution of this embodiment, the adjusting device 4 is a differential head. The inclination angle of the angle adjusting mechanism 3 can be adjusted by rotating the differential head, the angle change of the angle adjusting mechanism 3 can be linked with the slope adjusting mechanism 6 to generate the same angle change, the slope adjusting mechanism 6 can rotate through the bearing 5 and generate the rotation change relative to the angle adjusting mechanism 3, and the angle change of two directions of the slope adjusting mechanism 6 can be linked with the linear track sliding block mechanism 7 to generate the same angle change; the linear track sliding block mechanism 7 can generate displacement change relative to the slope adjusting mechanism 6; the laser collimator mounting base 8 and the displacement of the linear track slide block mechanism 7 change synchronously. When the angle of the angle adjusting mechanism 3 is 0 (i.e. when the angle adjusting mechanism 3 is parallel to the cage system mounting plate 1), the rotation center of the slope adjusting mechanism 6 is the geometric center of the 30mm standard cage system, and at this time, the linear moving track of the laser collimator mounting center on the laser collimator mounting base 8 passes through the rotation center of the slope adjusting mechanism 6 and also passes through the geometric center of the 30mm standard cage system. The invention can be adapted to a standard 30mm optical cage system and provides adjustable coefficients for adjusting incident laser
And independently adjustable x0And x'0Two degrees of freedom, and according to coefficients
Linkage y0In determining the adjustable coefficients
Then, the present invention can realize complete adjustment of the incident laser light by two degrees of freedom.
In the above technical solution, the incident light beam adjusting mechanism suitable for the off-axis integrating cavity provided by the present invention has the following beneficial effects:
the incident beam adjusting mechanism suitable for the off-axis integrating cavity can adjust the slope adjusting mechanism to be matched with the off-axis integrating cavity under the condition that the structural parameters of the off-axis integrating cavity are determined, the diameter of discrete light spots of the off-axis integrating cavity can be adjusted by adjusting the linear track sliding block mechanism, and the ellipticity of the discrete light spots of the off-axis integrating cavity is adjusted by the angle adjusting mechanism; the invention greatly reduces the adjustment freedom degree of the traditional four-dimensional adjustment platform, simplifies the adjustment process of operators and has higher practicability.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (8)
1. An incident beam steering mechanism for use with an off-axis integrating chamber, the steering mechanism comprising:
the cage system mounting plate (1) is fixed on a polished rod of the cage system; and
the angle adjusting mechanism (3) is connected to the cage system mounting plate (1) through an elastic supporting mechanism (2), and the elastic supporting mechanism (2) is used for providing tension between the cage system mounting plate (1) and the angle adjusting mechanism (3);
the adjusting device (4) is fixedly connected to the angle adjusting mechanism (3), and the inclination angle of the angle adjusting mechanism (3) can be adjusted by the adjusting device (4);
this guiding mechanism still includes:
a slope adjusting mechanism (6) is rotatably arranged at one end of the angle adjusting mechanism (3) far away from the cage system mounting plate (1) through a bearing (5); and
the linear track sliding block mechanism (7) is installed on the slope adjusting mechanism (6), and the slope adjusting mechanism (6) and the linear track sliding block mechanism (7) can incline along with the angle adjusting mechanism (3) to form linkage;
and the laser collimator mounting seat (8) is mounted on the linear track sliding block mechanism (7).
2. The incident light beam adjusting mechanism for off-axis integrator chambers as claimed in claim 1, wherein said angle adjusting mechanism (3) comprises an angle adjusting table (301), said adjusting device (4) is connected to said angle adjusting table (301) by a socket head cap screw (302);
and a locking nut (303) arranged at the bottom of the angle adjusting table board (301), and the locking nut (303) is rotated clockwise or anticlockwise to lock or unlock the slope adjusting mechanism (6).
3. The incident beam adjusting mechanism for an off-axis integrator chamber as claimed in claim 2, wherein said slope adjusting mechanism (6) comprises a slope adjusting mesa (601), said slope adjusting mesa (601) being parallel to said angle adjusting mesa (301).
4. The incident light beam adjusting mechanism for the off-axis integrator chamber as claimed in claim 3, wherein the inner ring of the bearing (5) is connected to the angle adjusting table (301) by a snap spring (501), and the outer ring of the bearing (5) is connected to the slope adjusting table (601) by a first fastening screw (602).
5. The incident light beam adjusting mechanism suitable for the off-axis integration chamber according to claim 1, wherein the cage system mounting plate (1) is connected to the polished rod of the 30mm standard cage system by four second fastening screws (101), one side of the angle adjusting mechanism (3) and the cage system mounting plate (1) is supported and limited by two steel balls (102), and the other side of the angle adjusting mechanism (3) is supported and limited by the adjusting device (4).
6. The incident light beam adjusting mechanism for off-axis integrating chamber according to claim 2, wherein the elastic supporting mechanism (2) comprises three sets of springs (201) disposed between the caged system mounting plate (1) and the angle adjusting mechanism (3), and the three sets of springs (201) tension the caged system mounting plate (1) and the angle adjusting mechanism (3);
one end of the spring (201) is connected to the cage system mounting plate (1) through a third fastening screw (202), and the other end of the spring (201) is connected to the angle adjustment table top (301) through a fourth fastening screw (203).
7. The incident light beam adjusting mechanism for the off-axis integrator chamber as claimed in claim 3, wherein said linear track slider mechanism (7) comprises a linear track (701); and
the laser collimator comprises a sliding block (704) matched with the linear track (701), the linear track (701) is connected to the slope adjustment table board (601) through a second inner hexagon screw (702), and the laser collimator mounting seat (8) is fixed on the sliding block (704) through a third inner hexagon screw (703).
8. An incident beam steering mechanism for an off-axis integrator chamber according to any of claims 1 to 7, wherein said adjusting means (4) is a differential head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210890311.4A CN115268001B (en) | 2022-07-27 | 2022-07-27 | Incident light beam adjusting mechanism applicable to off-axis integrating cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210890311.4A CN115268001B (en) | 2022-07-27 | 2022-07-27 | Incident light beam adjusting mechanism applicable to off-axis integrating cavity |
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| Publication Number | Publication Date |
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| CN115268001A true CN115268001A (en) | 2022-11-01 |
| CN115268001B CN115268001B (en) | 2023-04-25 |
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| CN202210890311.4A Active CN115268001B (en) | 2022-07-27 | 2022-07-27 | Incident light beam adjusting mechanism applicable to off-axis integrating cavity |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08335732A (en) * | 1995-06-08 | 1996-12-17 | Olympus Optical Co Ltd | Mounting angle adjustment mechanism for laser beam source |
| KR20020000425A (en) * | 2000-06-26 | 2002-01-05 | 이형도 | Liquid crystal align apparatus for liquid crystal beam projector |
| US20110102919A1 (en) * | 2009-10-30 | 2011-05-05 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd | Positioning assembly and optical system utilizing the same |
| CN205374828U (en) * | 2016-03-02 | 2016-07-06 | 北京航空航天大学 | Cage and cage / separation mixed light electric system minute adjustment alignment dish |
| CN109947140A (en) * | 2019-04-03 | 2019-06-28 | 辽宁科技大学 | A kind of 5DOF laser alignment micromatic setting and its adjusting method |
| CN113777797A (en) * | 2021-08-24 | 2021-12-10 | 长春理工大学 | Adjusting device and adjusting method for off-axis beam-reducing optical system |
| CN216526477U (en) * | 2021-12-17 | 2022-05-13 | 南京晶萃光学科技有限公司 | Coaxial optical adjuster and cage type optical adjusting rack |
-
2022
- 2022-07-27 CN CN202210890311.4A patent/CN115268001B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08335732A (en) * | 1995-06-08 | 1996-12-17 | Olympus Optical Co Ltd | Mounting angle adjustment mechanism for laser beam source |
| KR20020000425A (en) * | 2000-06-26 | 2002-01-05 | 이형도 | Liquid crystal align apparatus for liquid crystal beam projector |
| US20110102919A1 (en) * | 2009-10-30 | 2011-05-05 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd | Positioning assembly and optical system utilizing the same |
| CN205374828U (en) * | 2016-03-02 | 2016-07-06 | 北京航空航天大学 | Cage and cage / separation mixed light electric system minute adjustment alignment dish |
| CN109947140A (en) * | 2019-04-03 | 2019-06-28 | 辽宁科技大学 | A kind of 5DOF laser alignment micromatic setting and its adjusting method |
| CN113777797A (en) * | 2021-08-24 | 2021-12-10 | 长春理工大学 | Adjusting device and adjusting method for off-axis beam-reducing optical system |
| CN216526477U (en) * | 2021-12-17 | 2022-05-13 | 南京晶萃光学科技有限公司 | Coaxial optical adjuster and cage type optical adjusting rack |
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| CN115268001B (en) | 2023-04-25 |
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