CN104898403B - A kind of space application and super steady optical reference chamber can be carried - Google Patents
A kind of space application and super steady optical reference chamber can be carried Download PDFInfo
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- CN104898403B CN104898403B CN201510257009.5A CN201510257009A CN104898403B CN 104898403 B CN104898403 B CN 104898403B CN 201510257009 A CN201510257009 A CN 201510257009A CN 104898403 B CN104898403 B CN 104898403B
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- 239000000463 material Substances 0.000 claims abstract description 25
- 239000011521 glass Substances 0.000 claims abstract description 14
- 239000000919 ceramic Substances 0.000 claims abstract description 10
- 229910021421 monocrystalline silicon Inorganic materials 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 9
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Abstract
The invention discloses a kind of space application and super steady optical reference chamber can be carried, including globoid and to the annulus of fixed globoid, the light hole at globoid center is provided on the globoid, the both ends of light hole are provided with optical mirror slip, the optical mirror slip is made using super-low expansion material by substrate material, is additionally provided with vacuum vent holes and fixation hole on the globoid；The super-low expansion material is ULE, monocrystalline silicon, ceramics, devitrified glass or vitreous silica.The present invention is to carry out design space application in such a way that sphere and annulus combine and can carry super steady optical reference chamber.As stated in the background art, the integrality that can be very good protection sphere space structural mechanics, not only can obtain preferable vibration sensing degree on three-dimensional, and can satisfy the harsh conditions of space vibration impact, and whole assembly adjusting is simple.
Description
Technical field
The invention belongs to super steady optical reference chamber fields, are related to the super steady optical reference cavity configuration of one kind, especially a kind of sky
Between apply and can carry super steady optical reference chamber.
Background technique
With the development of space technology, the World Developed Countries such as the U.S., European Union, Japan and tissue are fallen over each other to carry out and be led in space
The light clock project in domain reaches the application of navigation, satellite, national defence higher precision to strive for obtaining the commanding elevation of temporal frequency.
Super steady optical reference chamber plays irreplaceable role as component extremely critical in light clock project.Light clock research
The stability of certain critical index and super steady optical reference chamber effective cavity length is closely related in the works.But Optical Parametric is influenced at present
The vibration for examining chamber change of cavity length is but difficult to inhibit and eliminate, it has also become one of the key constraints that its performance further increases.
Currently, multiple correlative study groups for space application and can carry super steady optical reference chamber and be ground in the world
System.Such as Paris, FRA observatory 2012 research and develop space application and super steady optical reference chamber can be carried, structure feature is round
Cylinder and support annulus, are designed using the principle for being displaced cancellation up and down.Experiment shows (i.e. optical axis side in the vertical direction
To) vibration sensing degree it is preferable, but the vibration sensing degree in other both directions is poor.Main cause is the super of space application
Steady optical reference chamber requires three-dimensional antivibration, but cylindrical body adds the mode of support annulus to be merely able to guarantee in vertical direction (i.e. optical axis
Direction) on have preferable vibration sensing degree, seem poor for other directions.
If only considering the change of cavity length of super steady optical reference chamber caused by external force, sphere is as the super steady optical reference of level
The cavity of chamber, plane squeezes super steady optical reference chamber along sphere diameter direction two o'clock where optical axis, so that super steady optical reference
Chamber has rotational symmetry structure in horizontal plane any direction.As long as rationally designing, sphere can make up above-mentioned cylindrical body
Defect, so as to substantially reduce the acceleration vibration sensing on super steady optical reference chamber three-dimensional.
Exploration has developed one kind and can carry super steady light respectively for American National Standard technical research institute 2012 and 2013
Reference cavity is learned, using the mode of the two o'clock support ball in the diametrical direction of sphere, vibration sensing degree is taken on three-dimensional
Obtained preferable index.But there are two point defects for the super steady optical reference chamber：One, additional press is needed when supporting spherical cavity
The pressure of sphere has not only broken up the ideal symmetrical of the structural mechanics of sphere script, and the dynamics adjusting squeezed is difficult to slap
It holds, assembly is complicated；Two, the vibration environment and harsh conditions of space three-dimensional direction complexity, the super steady optical reference chamber using
Two o'clock one-dimensional square supporting way, it is difficult to overcome spatial complex vibration environment.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, a kind of space application is provided and super steady light can be carried
Learn reference cavity.
The purpose of the present invention is achieved through the following technical solutions：
This space application and super steady optical reference chamber can be carried, including globoid and to the circle of fixed globoid
Ring is provided with the light hole at globoid center on the globoid, the both ends of light hole is provided with optical mirror slip, institute
It states optical mirror slip to be made using super-low expansion material by substrate material, is additionally provided with vacuum vent holes and fixation on the globoid
Hole；The super-low expansion material is ULE, monocrystalline silicon, ceramics, devitrified glass or vitreous silica.
Above-mentioned annulus fixation is set on the outer wall of globoid, and the horizontal plane of annulus and the optical axis direction of globoid are orthogonal
Direction relations.
Above-mentioned annulus is integrated with globoid.
Multiple vacuum vent holes are offered on above-mentioned globoid, each vacuum vent holes pass through the center of globoid.
Above-mentioned globoid is made of super-low expansion material, and the super-low expansion material is ULE, monocrystalline silicon, ceramics, crystallite glass
Glass or vitreous silica.
The invention has the advantages that：
The present invention is to carry out design space application in such a way that sphere and annulus combine and can carry super steady optical reference chamber.
As stated in the background art, the integrality that can be very good protection sphere space structural mechanics, not only can obtain three-dimensional
Preferable vibration sensing degree on direction, and can satisfy the harsh conditions of space vibration impact, and whole assembly is adjusted simply.
The super steady optical reference chamber that the present invention designs can be applied to optics atomic clock, super-narrow line width laser, optical interdferometer, gravitation
The high-tech areas such as wave detection.
Detailed description of the invention
Fig. 1 is super steady optical reference cavity configuration schematic diagram of the invention；
Fig. 2 is circular ring structure schematic diagram of the invention；
Fig. 3 is the A-A cross-sectional view of Fig. 1；
Fig. 4 is the B-B cross-sectional view of Fig. 1.
Wherein：1 is globoid；2 be annulus；3 be optical mirror slip；4 be vacuum vent holes；5 be light hole；6 be fixation hole.
Specific embodiment
Referring to Fig. 1-4, space application of the invention and can to carry super steady optical reference chamber include globoid 1 and to solid
The annulus 2 for determining globoid 1 is provided with the light hole 5 at 1 center of globoid, the two of light hole 5 on the globoid 1
End is provided with optical mirror slip 3, and the optical mirror slip 3 is made using super-low expansion material by substrate material, also sets on the globoid 1
It is equipped with vacuum vent holes 4 and fixation hole 6；The super-low expansion material is ULE, monocrystalline silicon, ceramics, devitrified glass or tekite
English.The fixation of annulus 2 is set on the outer wall of globoid 1, and the optical axis direction of the horizontal plane and globoid 1 of annulus 1 is orthogonal
Direction relations.The annulus 2 is integrated with globoid 1.Multiple vacuum vent holes 4 are offered on the globoid 1, often
A vacuum vent holes 4 pass through the center of globoid 1.The globoid 1 is made of super-low expansion material, the super-low expansion material
For ULE, monocrystalline silicon, ceramics, devitrified glass or vitreous silica.
The invention will be described in further detail with reference to the accompanying drawing：
The super steady optical reference cavity configuration schematic diagram of Fig. 1.ΦRingFor the diameter of annulus, ΦBallFor the diameter of sphere, ΦLightFor light passing
The diameter in hole, ΦIt is fixedFor the diameter of fixing hole on annulus.
The size of sphere is selected first, and the size of sphere diameter should be selected according to the requirement of thermal noise index；According to vibration
Dynamic sensitivity indexes require, the constraint in space and the requirement for resisting oscillation intensity, select the size of annulus, including its thickness, straight
Diameter, the size of fixation hole, the number of fixation hole；Annulus is relative to the position of sphere (i.e. optical axis direction) in the vertical direction：
Small floating above and below the central plane of sphere, specific size are determined according to the requirement of vibration sensing degree；The position of vacuum hole and
Size and its number, vacuum hole relative dimensions and data are the index request and vibration sensing degree requirement by vacuum degree；
Finally the diameter of light hole, mainly according to optical resonator theory, the size of laser facula, glasses lens plated area's size with
And entire cavity intensity decision.
In short, the space application and can to carry super steady optical reference chamber cavity be according to vibration sensing degree, thermal noise, resistance
The technical requirements such as vibratory impulse, optical resonator theory and Theoretical Design, using super-low expansion material (such as ULE, monocrystalline
Silicon, ceramics, devitrified glass, vitreous silica etc.) integration processing and manufacturing；Eyeglass is using FS the or ULE eyeglass optical cement of standard in chamber
(note on two planes above and below body：If using standard FS eyeglass also ULE ring, specific size need to be installed additional in the rear side of the eyeglass
It is designed according to expansion principle).Present invention seek to address that domestic at present or even space application and super steady light can be carried in the world
Learning the technical problem that reference cavity faces, (vibration sensing degree requires all high, resistance vibratory impulse to require higher, hot on such as three-dimensional
Noise is lower, narrow space, weight demands are harsh and adjust simple etc.).
1, the size and material of sphere.Limiting super steady one basic problem of optical reference chamber performance is exactly Blang's thermal noise,
And the chamber of the size of Blang's thermal noise and super steady optical reference chamber is long inversely, so we first should be according to thermal noise
The size of the requirement selection sphere diameter of index.The material selection super-low expansion material of sphere is (such as ULE, monocrystalline silicon, ceramics, micro-
Crystal glass, vitreous silica etc.).
2, the size and material of annulus.It is required according to space oscillations sensitivity indexes, the constraint in space and resistance are vibrated by force
The requirement of degree requires to select the size of annulus for target with vibration sensing degree on three-dimensional using finite element method,
Including its thickness, diameter, the size of fixation hole, the number of fixation hole, (fixation hole is uniformly distributed, number in anchor ring circumferential direction
Amount is 3 multiple proportion, and the requirement that specific number required and resisted vibratory impulse according to vibration sensing degree determines)；Annulus and ball
Body is manufactured using integrated design, and use is also that super-low expansion material (such as ULE, monocrystalline silicon, ceramics, devitrified glass, melts
Fused silica etc.).
3, position of the annulus relative to sphere (i.e. optical axis direction) in the vertical direction.This position is directly by super steady Optical Parametric
The index request for examining the vibration sensing degree of chamber determines.Under normal circumstances, the small floating above and below the central plane of sphere, tool
Body size is determined according to the requirement of vibration sensing degree, the material of cavity and mechanical attribute and analytical calculation.
4, the positions and dimensions of vacuum hole and its number.As shown in Figure 1, vacuum hole is located on annulus, diameter by
Vacuum degree index request determine, center is located at the center of annulus thickness, in circular planes, be evenly arranged on two it is adjacent solid
Determine the general position of angle between hole, the number of vacuum hole is by the index request of vacuum degree, the requirement of vibration sensing degree and fixation
(multiple for 3) that hole number determines, such as fixation hole are 6, in order to guarantee sphere symmetry, fixation hole need 6 (or
Person 3).
5, the diameter of light hole.It is mainly big according to optical resonator theory, the size of laser facula, glasses lens plated area
What small and entire cavity intensity determined.Its diameter and laser spot diameter that cannot be less than glasses lens plated area, but cannot be excessive,
It crosses senior general and directly affects the intensity of entire cavity and the optical properties of optical resonator.
Feature of the invention relative to current spatial apply and can carry super steady optical reference chamber its mainly have following 4 points it is excellent
Gesture：
(1) it can be very good the integrality of protection sphere space structural mechanics.1. relative to current diameter of Spherical Volume application and
The two o'clock one-dimensional square supporting way of super steady optical reference chamber can be carried, arch brace can disperse and weaken additional support force pair
In the concentrated force of sphere, and additional support force is by after annulus being uniformly applied on sphere；2. vacuum vent holes are uniform
It is arranged on annulus and ensure that symmetry；3. sphere removes the plane of eyeglass bonding part, sphere structure is directed to without other
Integrity violations.
(2) preferable vibration sensing degree can be obtained on three-dimensional.It applies and can remove relative to current cylindrical space
Super steady optical reference chamber is transported, the spherical shape that this structure has can be very good to play the symmetry of spherical structure, obtain three-dimensional
Preferable vibration sensing degree on direction.
(3) meet the harsh conditions of space vibration impact very well.Super steady Optical Parametric is applied and can be carried to current diameter of Spherical Volume
Examining chamber is that the stabilization that sphere obtains sphere is diametrically above squeezed using extruding force using two o'clock one-dimensional square supporting way,
Vibration environment condition in biggish space is difficult to meet vibration harsh conditions.
(4) whole assembly is adjusted simple.Current diameter of Spherical Volume application and the two o'clock that can carry super steady optical reference chamber are one-dimensional
Direction supporting way needs the symmetrical extruding force on diametrically, and extruding force and vibration sensing degree are closely related, and assembly is adjusted
It is difficult.And this structure is not necessarily to extruding force, need to only use the symmetrical clamping rings of screw, assembles relatively easy and is easily achieved.
In short, the present invention can overcome above-mentioned space application and can carry the technology that super steady optical reference chamber faces both at home and abroad
Defect.It, which is mainly manifested in, can not only obtain preferable vibration sensing degree on three-dimensional, meet space vibration impact very well
Harsh conditions, and whole assembly adjust it is simple.
Claims (3)
1. a kind of space application and super steady optical reference chamber can be carried, which is characterized in that including globoid (1) and to fixation
The annulus (2) of globoid (1) is provided with the light hole (5) at globoid (1) center, in light passing on the globoid (1)
The both ends in hole (5) are provided with optical mirror slip (3), and the optical mirror slip (3) is made using super-low expansion material by substrate material, described
Vacuum vent holes (4) and fixation hole (6) are additionally provided on globoid (1)；The optical mirror slip (3) is with super-low expansion material
ULE, monocrystalline silicon, ceramics, devitrified glass or vitreous silica；
It is offered multiple vacuum vent holes (4) on the globoid (1), each vacuum vent holes (4) pass through in globoid (1)
The heart；
The globoid (1) is made of super-low expansion material, the globoid (1) with super-low expansion material is ULE, monocrystalline silicon,
Ceramics, devitrified glass or vitreous silica；
Vacuum vent holes pass through annulus, and center is located at the center of annulus thickness, in circular planes, is evenly arranged on two phases
The general position of angle between adjacent fixation hole, the number of vacuum vent holes are the multiples for 3.
2. space application according to claim 1 and super steady optical reference chamber can be carried, which is characterized in that the annulus
(2) fixation is set on the outer wall of globoid (1), and the horizontal plane of annulus (1) and the optical axis direction of globoid (1) are orthogonal direction
Relationship.
3. space application according to claim 2 and super steady optical reference chamber can be carried, which is characterized in that the annulus
(2) it is integrated with globoid (1).
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| CN201510257009.5A CN104898403B (en) | 2015-05-19 | 2015-05-19 | A kind of space application and super steady optical reference chamber can be carried |
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| CN201510257009.5A CN104898403B (en) | 2015-05-19 | 2015-05-19 | A kind of space application and super steady optical reference chamber can be carried |
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| CN109828342B (en) * | 2019-02-28 | 2024-03-08 | 中国科学院国家授时中心 | Multifunctional ultra-stable optical reference cavity and mounting method thereof |
| CN110086079B (en) * | 2019-05-06 | 2020-12-01 | 中国科学院武汉物理与数学研究所 | Super stable optical cavity |
| CN111324933B (en) * | 2020-02-19 | 2023-03-21 | 中国科学院国家授时中心 | Method for analyzing vibration sensitivity of vibration-resistant optical reference cavity and designing reference cavity |
| CN113325686A (en) * | 2021-04-22 | 2021-08-31 | 温州激光与光电子协同创新中心 | Micro atomic clock physical unit applying spherical air chamber and spherical air chamber |
| CN117977362A (en) * | 2024-04-01 | 2024-05-03 | 中国科学院国家授时中心 | Ceramic cavity composite optical cavity |
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Inventor after: Dong Ruifang Inventor after: Xu Guanjun Inventor after: Liu Tao Inventor after: Zhang Shougang Inventor after: Gao Jing Inventor after: Jiao Dongdong Inventor after: Zhang Linbo Inventor before: Xu Guanjun Inventor before: Liu Tao Inventor before: Dong Ruifang Inventor before: Zhang Shougang |
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