CN206833168U - Collimator and extender spot diameter converting means - Google Patents
Collimator and extender spot diameter converting means Download PDFInfo
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- CN206833168U CN206833168U CN201720583091.5U CN201720583091U CN206833168U CN 206833168 U CN206833168 U CN 206833168U CN 201720583091 U CN201720583091 U CN 201720583091U CN 206833168 U CN206833168 U CN 206833168U
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- China
- Prior art keywords
- amici prism
- collimator
- extender
- lens
- wideband polarization
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Abstract
A kind of collimator and extender spot diameter converting means, fibre-optical splice is provided with the end cap of lens barrel one end, lens barrel is interior to set gradually the first wideband polarization Amici prism, concavees lens, half wave plate, the second wideband polarization Amici prism, cemented doublet, liquid lens along the transmission direction of light.The utility model has the advantages of simple in construction, easy to operate, good directionality.
Description
Technical field
The utility model belongs to optical devices technologies field, and in particular to becomes to a kind of collimator and extender spot diameter and changes the outfit
Put.
Background technology
Current atom clock cold atom cloud sample is typically all prepared using Magneto-Optical Trap technology.Magneto-Optical Trap technology typically uses
Six beam laser are engaged with magnetic field to complete.Six beam laser by respective collimator and extender lens barrel, enter magneto-optic respectively
In trap, capture atomic region is formed with corresponding magnetic field, so as to capture atom, prepares cold atom sample.The stability of atomic clock
As more as possible with the number of degree of accuracy index request cold atom sample, density is as small as possible.This requires not changing prisoner as far as possible
Under the premise of obtaining atom number, expand the volume (shape for changing atomic group) of atomic group.
It is main that current atom clock (expands atomic group volume simultaneously, ensure atomic group invariable number) in cold atom sample is prepared
Two ways is used, one kind is to change six beams to expand laser optics parameter (frequency and power) to reach change atomic group shape
Purpose, so as to reduce the density of atomic group.The advantages of this mode is the relative position for not changing laser and collimator and extender microscope group
Put, in the absence of motion mechanically, it is ensured that laser is by the directionality after collimator and extender lens barrel, but this mode is scarce
Point is the increase in atomic clock optical system complexity.Another mode is to change laser with being collimated thoroughly inside collimator and extender lens barrel
The relative position of microscope group, it is this to reach the purpose for changing atomic group shape so as to change the light intensity after collimator and extender lens barrel
Mode need not change the optical parametric of six beam laser, but need to change inside laser and collimator and extender lens barrel collimation lens set it
Between relative position, mechanical movement be present, it is impossible to directionality of the strict guarantee laser after collimator and extender lens barrel.
Utility model content
The shortcomings that technical problem to be solved in the utility model is to overcome existing collimator and extender device, there is provided Yi Zhongshe
Count reasonable, simple in construction, easy to operate, good directionality collimator and extender spot diameter converting means.
Technical scheme is used by solving above-mentioned technical problem：Fibre-optical splice, lens barrel are provided with the end cap of lens barrel one end
It is inclined that the interior transmission direction along light sets gradually the first wideband polarization Amici prism, concavees lens, half wave plate, the second broadband
Shake Amici prism, cemented doublet, liquid lens.
As a kind of perferred technical scheme, the distance between the first wideband polarization Amici prism and fibre-optical splice be 9~
20mm, the distance between the first wideband polarization Amici prism and concavees lens are 2~7mm, described concavees lens and half ripple
The distance between piece is 2~7mm, the distance between described half wave plate and the second wideband polarization Amici prism be 2~
7mm, the distance between the second described wideband polarization Amici prism and cemented doublet are 15~100mm, and described is double glued
The distance between lens and liquid lens are 3~10mm.
As a kind of perferred technical scheme, the focal length of described concavees lens is -30mm~-80mm.
As a kind of perferred technical scheme, the described liquid lens plane of incidence be concave surface, exit facet be plane, the plane of incidence
Radius of curvature be -45mm~-60mm.
As a kind of perferred technical scheme, the first described wideband polarization Amici prism and half wave plate and
The wavelength of two wideband polarization Amici prisms is identical.
The beneficial effects of the utility model are as follows：
The utility model is using the first wideband polarization Amici prism, concavees lens, half wave plate, the second wideband polarization point
Light prism, cemented doublet are collimated and expanded, and when changing cold atom sample volume, do not change cooling Trapping of Atoms laser
Frequency and power, reduce the complexity of cooling imprison cold atom sample optical system, improve the stability of optical system,
Cemented doublet, ensure the collimation of shoot laser, using liquid lens to being focused or dissipating to shoot laser, have and adjust
Section is simple, and easy to operate, mechanical movement is not present in the utility model, ensure that the directionality of emergent light spot, reduces cold atom
The reduced number of possibility of sample.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
With reference to the accompanying drawings and examples to the utility model be further described, but the utility model be not limited to it is following
Embodiment.
Embodiment 1
In Fig. 1, the collimator and extender spot diameter converting means of the present embodiment is by fibre-optical splice 1, lens barrel 2, the first broadband
Polarization splitting prism 3, concavees lens 4, half wave plate 5, the second wideband polarization Amici prism 6, cemented doublet 7, liquid are saturating
Mirror 8 connects and composes.
Fibre-optical splice 1 is provided with one end end cap of lens barrel 2, the interior exit direction along light of lens barrel 3 is away from fibre-optical splice
First wideband polarization Amici prism 3 is installed, along the exit direction of light away from peace at the first wideband polarization Amici prism 5mm at 15mm
Equipped with concavees lens 4, the focal length of concavees lens 4 is -50mm, along the exit direction of light away from being provided with half at concavees lens 5mm
Wave plate 5, along the exit direction of light away from being provided with the second wideband polarization Amici prism 6, the second broadband at half wave plate 5mm
Polarization splitting prism 6 is identical with the wavelength of the wideband polarization Amici prism 3 of half wave plate 5 and first, along the outgoing of light
Away from cemented doublet 7 is provided with the second wideband polarization Amici prism 60mm, the plane of incidence of cemented doublet 7 and cemented surface are equal in direction
For to the raised convex surface of the opposite direction of light exit direction, light-emitting face is to the raised convex surface of light exit direction, the song of the plane of incidence
Rate radius is 124mm, and the radius of curvature of cemented surface is 31mm, and the radius of curvature of light-emitting face is -37mm, cemented doublet 7
Antireflective film is coated with the plane of incidence and exit facet, along the exit direction of light away from being provided with liquid lens at cemented doublet 7mm
8, the plane of incidence of liquid lens 8 is concave surface, exit facet is plane, and the radius of curvature of the plane of incidence is -50mm.Passed by fibre-optical splice 1
The laser entered passes through the first wideband polarization Amici prism 3, and the first wideband polarization Amici prism 3 only allows laser vertical incident in it
The polarization state vertical component in face by the horizontal component introduced by optical fiber by being eliminated, playing a part of analyzing, laser passes through
Concavees lens 4 further dissipate, and the laser of diverging passes through the polarization splitting prism 6 of half wave plate 5 and second, by rotating two points
One of wave plate 5 can change laser polarization state direction, the second polarization splitting prism 6 is then the effect of analyzing, half wave plate 5 with
Second polarization splitting prism 6 controls the power output of laser, by the divergencing laser of the second polarization splitting prism 6 by double glued
Lens 7, are collimated, and ensure that the laser quasi of outgoing is straightforward, then by adjusting liquid lens 8, make Laser Focusing or diverging, until
Untill generation meets cold atom cloud sample condition.
Embodiment 2
In the present embodiment, fibre-optical splice is fixedly connected with screw threads for fastening connector on one end end cap of lens barrel 1, in lens barrel
Along the exit direction of light away from the first wideband polarization Amici prism is installed at fibre-optical splice 9mm, along the exit direction of light away from the
Concavees lens are installed, the focal length of concavees lens is -30mm, along the exit direction of light away from recessed at one wideband polarization Amici prism 2mm
Half wave plate is installed, along the exit direction of light away from being provided with the second broadband at half wave plate 2mm at lens 2mm
Polarization splitting prism, the second wideband polarization Amici prism and the wavelength of half wave plate and the first wideband polarization Amici prism
It is identical, along the exit direction of light away from being provided with cemented doublet 7, cemented doublet at the second wideband polarization Amici prism 15mm
7 planes of incidence and cemented surface are to the raised convex surface of the opposite direction of light exit direction, and light-emitting face is raised to light exit direction
Convex surface, the radius of curvature of the plane of incidence is 124mm, and the radius of curvature of cemented surface is 31mm, the radius of curvature of light-emitting face for-
Antireflective film is coated with 37mm, cemented doublet the 2-7 plane of incidence and exit facet, along the exit direction of light away from cemented doublet
Liquid lens 8 is installed at 3mm, the plane of incidence of liquid lens 8 is concave surface, exit facet is plane, the radius of curvature of the plane of incidence for-
45mm.The annexation of other parts and parts is same as Example 1.
Embodiment 3
In the present embodiment, fibre-optical splice 1, lens barrel 2 are fixedly connected with screw threads for fastening connector on one end end cap of lens barrel 2
The interior exit direction along light is away from the first wideband polarization Amici prism 3 is installed at fibre-optical splice 20mm, along the exit direction of light
Away from concavees lens 4 are provided with the first wideband polarization Amici prism 7mm, the focal length of concavees lens 4 is -30mm, along the outgoing side of light
Half wave plate 5 is installed at away from concavees lens 7mm, along the exit direction of light away from being provided with half wave plate 7mm
Second wideband polarization Amici prism 6, the second wideband polarization Amici prism 6 and the wideband polarization point of half wave plate 5 and first
The wavelength of light prism 3 is identical, double glued saturating away from being provided with the second wideband polarization Amici prism 100mm along the exit direction of light
Mirror 7, the plane of incidence of cemented doublet 7 and cemented surface be to the raised convex surface of the opposite direction of light exit direction, light-emitting face be to
The raised convex surface of light exit direction, the radius of curvature of the plane of incidence are 124mm, and the radius of curvature of cemented surface is 31mm, light-emitting face
Radius of curvature be -37mm, antireflective film is coated with the plane of incidence and exit facet of cemented doublet 7, along the exit direction of light
Away from liquid lens 8 is provided with cemented doublet 10mm, the plane of incidence of liquid lens 8 is concave surface, exit facet is plane, the plane of incidence
Radius of curvature is -60mm.The annexation of other parts and parts is same as Example 1.
Claims (5)
- A kind of 1. collimator and extender spot diameter converting means, it is characterised in that：Fibre-optical splice is provided with the end cap of lens barrel (2) one end (1), in lens barrel (2) along the transmission direction of light set gradually the first wideband polarization Amici prism (3), concavees lens (4), two/ One wave plate (5), the second wideband polarization Amici prism (6), cemented doublet (7), liquid lens (8).
- 2. collimator and extender spot diameter converting means according to claim 1, it is characterised in that：The first described broadband is inclined Shake the distance between Amici prism (3) and fibre-optical splice (1) is 9~20mm, the first wideband polarization Amici prism (3) and concavees lens The distance between (4) it is 2~7mm, the distance between described concavees lens (4) and half wave plate (5) are 2~7mm, described Half wave plate (5) and the distance between the second wideband polarization Amici prism (6) be 2~7mm, the second described broadband is inclined Shake the distance between Amici prism (6) and cemented doublet (7) is 15~100mm, and described cemented doublet (7) and liquid are saturating The distance between mirror (8) is 3~10mm.
- 3. collimator and extender spot diameter converting means according to claim 1 or 2, it is characterised in that：Described concavees lens (4) focal length is -30mm~-80mm.
- 4. collimator and extender spot diameter converting means according to claim 1 or 2, it is characterised in that：Described liquid is saturating Mirror (8) plane of incidence is concave surface, exit facet is plane, and the radius of curvature of the plane of incidence is -45mm~-60mm.
- 5. collimator and extender spot diameter converting means according to claim 1, it is characterised in that：The first described broadband is inclined The Amici prism (3) that shakes is identical with the wavelength of half wave plate (5) and the second wideband polarization Amici prism (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720583091.5U CN206833168U (en) | 2017-05-22 | 2017-05-22 | Collimator and extender spot diameter converting means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720583091.5U CN206833168U (en) | 2017-05-22 | 2017-05-22 | Collimator and extender spot diameter converting means |
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| Publication Number | Publication Date |
|---|---|
| CN206833168U true CN206833168U (en) | 2018-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720583091.5U Expired - Fee Related CN206833168U (en) | 2017-05-22 | 2017-05-22 | Collimator and extender spot diameter converting means |
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| CN (1) | CN206833168U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411994A (en) * | 2019-07-17 | 2019-11-05 | 中国科学院国家授时中心 | Improve the detection device of optical signal stability |
| CN113644537A (en) * | 2021-07-02 | 2021-11-12 | 中国科学院上海光学精密机械研究所 | Device for controlling broadband laser output energy |
-
2017
- 2017-05-22 CN CN201720583091.5U patent/CN206833168U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411994A (en) * | 2019-07-17 | 2019-11-05 | 中国科学院国家授时中心 | Improve the detection device of optical signal stability |
| CN113644537A (en) * | 2021-07-02 | 2021-11-12 | 中国科学院上海光学精密机械研究所 | Device for controlling broadband laser output energy |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180102 |