CN209605948U - Single-photon detector and its low-temperature insulation device - Google Patents
Single-photon detector and its low-temperature insulation device Download PDFInfo
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- CN209605948U CN209605948U CN201921556919.3U CN201921556919U CN209605948U CN 209605948 U CN209605948 U CN 209605948U CN 201921556919 U CN201921556919 U CN 201921556919U CN 209605948 U CN209605948 U CN 209605948U
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Abstract
The utility model discloses a kind of single-photon detector and its low-temperature insulation devices, it is related to equipment refrigeration technology field, and the low-temperature insulation device includes fixed module, semiconductor cooler, circuit board, pressing plate, insulation shell, heat preservation cap, the first sealing ring, the second sealing ring and radiator；The insulation shell, heat preservation cap and radiator form a closed low-temperature insulation space by first sealing ring and the second sealing ring；One fixed module, a semiconductor cooler and a circuit board form a refrigeration module, the quantity at least two of refrigeration module；The pressing plate and all refrigeration modules are built in the low-temperature insulation space, and all refrigeration modules are fixed on the radiator by pressing plate；All refrigeration modules in low-temperature insulation space are transversely arranged, boundary of outermost two refrigeration modules far from low-temperature insulation space.The low-temperature insulation apparatus integration of the application, easy for installation, at low cost, refrigerating thermal-insulation effect is preferable.
Description
Technical field
This application involves equipment refrigeration technology fields, and in particular to a kind of single-photon detector and its low-temperature insulation device.
Background technique
Currently, largely using carrier of the single photon as quantum information in the research of quantum information science, therefore single photon
Detection Techniques play a crucial role.Single-photon detector can detecte the single photon for carrying quantum information, and be converted to
Electric signal output, then extracts quantum information entrained by single photon by means such as coincidence measurement, countings.
In quantum communications product development and design, single-photon detector generallys use avalanche photodide, and is applied to
The avalanche photodide needs of single-photon detector work in a low temperature of -40 to -50 degrees Celsius, to improve its work effect
Rate.Low-temperature working environment can be such that the dark current noise of single-photon detector reduces, to can greatly improve its sensitivity.Cause
This, needs a working environment that can freeze and can be always maintained at low temperature when single-photon detector works.Above-mentioned refrigerating thermal-insulation
The internal temperature of environment is -40 to -50 degrees Celsius, external temperature is environment temperature i.e. room temperature, and internal-external temperature difference is larger, easily heat
Exchange, thus have harsh requirement to the design of the refrigerating heat-insulating device.
A set of low-temperature insulation device of existing single-photon detector is typically only capable to accommodate a photodiode, works as single photon
Detector just needs to use more set low-temperature insulation devices of corresponding number simultaneously when needing using multiple photodiodes, using
It is poor that inconvenient, at high cost and refrigerating thermal-insulation effect is installed in the case where more set low-temperature insulation devices.
Utility model content
In order to overcome the drawbacks described above of the prior art, the technical problem to be solved is that provide one for the utility model embodiment
Kind of single-photon detector and its low-temperature insulation device, low-temperature insulation apparatus integration therein, easy for installation, at low cost, refrigeration
Heat insulation effect is preferable.
The specific technical solution of the utility model embodiment is:
A kind of single-photon detector and its low-temperature insulation device, the low-temperature insulation device include fixed module, semiconductor
Refrigerator, circuit board, pressing plate, insulation shell, heat preservation cap, the first sealing ring, the second sealing ring and radiator；The heat preservation
Shell, heat preservation cap and the radiator by first sealing ring and second sealing ring form one it is closed low
Warm keeping warmth space；One fixed module, a semiconductor cooler and a circuit board form a refrigeration module, institute
State the quantity at least two of refrigeration module；It is empty that the pressing plate and all refrigeration modules are built in the low-temperature insulation
Between, all refrigeration modules are fixed on the radiator by the pressing plate；All systems in the low-temperature insulation space
Cold module is transversely arranged, outermost boundary of two refrigeration modules far from the low-temperature insulation space.
Preferably, all refrigeration modules in the low-temperature insulation space share a block pressur plate, and the pressing plate passes through
All refrigeration modules are fixed on the radiator, the pressing plate plastic plate moderate using toughness by screw.
Preferably, the pressing plate offers refrigerator placement hole, the quantity of the refrigerator placement hole and the semiconductor
The quantity of refrigerator is consistent, and the semiconductor cooler, which only has part, can pass through the refrigerator placement hole, described solid
Cover half block, circuit board and part semiconductor refrigerator are set to the top of the pressing plate, the part semiconductor cooler with
And the radiator is set to the lower section of the pressing plate.
It preferably, further include thermal insulating filler, the thermal insulating filler is porous material, heat-reflecting material and vacuum material
One of three classes heat-barrier material is a variety of, and the thermal insulating filler is full of the remaining space in the low-temperature insulation space.
Preferably, the upper and lower end face setting of the insulation shell is fluted, and first sealing ring is set to the heat preservation
At upper groove between shell and heat preservation cap, under second sealing ring is set between the insulation shell and radiator
Groove is fixed between the insulation shell and heat preservation cap and between the insulation shell and radiator by screw.
It preferably, further include electrical interface, the electrical interface is connect with the circuit board, the circuit board and photoelectricity two
Pole pipe connection, the electrical interface are passed through the insulation shell and are sealed using colloid.
Preferably, the optical fiber for connecting photodiode offers optical fiber on the insulation shell, the insulation shell
Through-hole, the quantity of the optical fiber through-hole and the quantity of photodiode in the low-temperature insulation space are consistent, the optical fiber
The diameter of through-hole is greater than or equal to the diameter of the optical fiber, and the optical fiber is stayed after running through the optical fiber through-hole using colloid sealing
Gap.
Preferably, the semiconductor cooler has opposite huyashi-chuuka (cold chinese-style noodles) and hot face, and the fixed module is by photodiode
It is fixed on the huyashi-chuuka (cold chinese-style noodles), the hot face is connected to the radiator.
Preferably, the fixed module includes fastening elastic slice, bottom nozzle, upper tube socket and bolt, the fastening elastic slice
Top offers the screw hole of perforation, and the bolt is screwed into the screw hole for fastening the bottom nozzle and upper tube socket, the down tube
Seat is provided with groove with upper tube socket, and photodiode is set to the groove between the bottom nozzle and upper tube socket, the button
Photodiode, the bottom nozzle and upper tube socket are closely buckled in the huyashi-chuuka (cold chinese-style noodles) by tight elastic slice.
A kind of single-photon detector, comprising: the low-temperature insulation device of the single-photon detector as described in any of the above-described.
As it can be seen from the above scheme the application provides a kind of single-photon detector and its low-temperature insulation device, wherein low temperature is protected
The low-temperature insulation space of warm device includes at least two refrigeration modules, and all refrigeration modules are set to together in low-temperature insulation device
In one low-temperature insulation space, all refrigeration modules share same block pressur plate, and all refrigeration modules are fixed on scattered by above-mentioned pressing plate
Hot device realizes the integration of low-temperature insulation device, in the case where needing using multiple refrigeration modules, compared to existing one
Set low-temperature insulation device only accommodates a refrigeration module, reduces the cost of device entirety, and do not need multiple refrigeration modules
It is mounted in different insulation shells, a pressing plate can fix all refrigeration modules, and install convenient is convenient.In addition, low
All refrigeration modules in warm keeping warmth space are transversely arranged, side of outermost two refrigeration modules far from low-temperature insulation space
Boundary, in the case where overall low-temperature insulation device volume is certain, integrated low-temperature insulation device is independent compared to single
Low-temperature insulation device, the positional distance arrangement between refrigeration module can be more flexible, i.e., the distance of two neighboring refrigeration module
Can be closer, outermost refrigeration module can be farther with the boundary of distance low-temperature keeping warmth space, can reduce outside insulation shell
Influence of the environment temperature to refrigeration module, refrigerating thermal-insulation effect are preferable.Thermal insulating filler is filled with the residue in low-temperature insulation space
Space, above-mentioned thermal insulating filler can reduce the exchange of the heat in refrigerating thermal-insulation space, further strengthen its heat insulation effect.
Referring to following description and accompanying drawings, the particular implementation of the utility model is disclosed in detail, specifies practical
Novel principle can be in a manner of adopted.It should be understood that the embodiments of the present invention in range not thus by
Limitation.In the range of the spirit and terms of appended claims, the embodiments of the present invention includes many changes, modifications
With it is equivalent.The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
It uses in a other embodiment, is combined with the feature in other embodiment, or the feature in substitution other embodiment.
Detailed description of the invention
Attached drawing described here is only used for task of explanation, and is not intended to limit in any way disclosed by the utility model
Range.In addition, shape and proportional sizes of each component in figure etc. are only schematically, to be used to help the reason to the utility model
Solution is not the specific shape and proportional sizes for limiting each component of the utility model.Those skilled in the art is practical new at this
Under the introduction of type, various possible shapes and proportional sizes can be selected to implement the utility model as the case may be.
Fig. 1 is a kind of positive structure diagram of the low-temperature insulation device of single-photon detector of the application；
Fig. 2 is a kind of the schematic diagram of the section structure of the low-temperature insulation device of single-photon detector of the application；
Fig. 3 is a kind of schematic perspective view of the low-temperature insulation device of single-photon detector of the application；
Fig. 4 is the schematic diagram of the section structure of fixed module, semiconductor cooler and photodiode in the application.
Specific embodiment
In conjunction with the description of attached drawing and specific embodiment of the present invention, the utility model can be clearly understood
Details.But specific embodiment of the present utility model described herein, it is only used for explaining the purpose of this utility model, without
It can be understood as being limitations of the present invention in any way.Under the introduction of the utility model, technical staff is contemplated that
Any possible deformation based on the utility model, these are regarded as belonging to the scope of the utility model.It needs to illustrate
It is that when element is referred to as " being set to " another element, it can directly on the other element or there may also be placed in the middle
Element.When an element is considered as " connection " another element, it can be directly to another element or can
Centering elements can be existed simultaneously.Term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be mechanical connection or
Electrical connection, the connection being also possible to inside two elements can be directly connected, can also indirectly connected through an intermediary,
For the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.Made herein
Term " vertical ", " horizontal ", "upper", "lower", "left", "right" and similar statement simply to illustrate that mesh
, it is not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to the application
The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term as used herein "and/or" includes one or more
Any and all combinations of relevant listed item.
The application provides a kind of single-photon detector and its low-temperature insulation device, and Fig. 1 is a kind of single-photon detecting of the application
The positive structure diagram of the low-temperature insulation device of device is surveyed, Fig. 2 is a kind of low-temperature insulation dress of single-photon detector of the application
The schematic diagram of the section structure set, Fig. 3 are a kind of stereochemical structure signal of the low-temperature insulation device of single-photon detector of the application
Figure.Referring to Fig.1 shown in -3, a kind of low-temperature insulation device of single-photon detector may include: fixed module 4, semiconductor refrigerating
Device 5, circuit board 3, pressing plate 6, insulation shell 71, heat preservation cap 72, the first sealing ring 81, the second sealing ring 82 and radiator
10.Semiconductor cooler 5 refers to the device that cooling capacity is produced using the thermo-electrically effect of semiconductor, it is preferable that above-mentioned semiconductor refrigerating
Device 5 is 4 grades of refrigeration semiconductor refrigerating chips；Insulation shell 71 and heat preservation cap 72 are all made of the preferable metal material of heat insulation
Matter, can heat-insulated reduction heat exchange it is firm firm but also with preferable mechanical performance, such as metallic silver, metallic aluminium, metallic nickel etc.,
Metallic aluminium is preferably selected, metallic aluminium is one of heat-reflecting material, has very high heat reflection index, and cost is relatively low；It dissipates
Hot device 10 includes heat-conducting plate 101 and cooling fin 102, and heat-conducting plate 101 is metal material with cooling fin 102 and is integrally formed, In
In the present embodiment, other component is connected with radiator 10 indicates that other component is connected with the heat-conducting plate 101 in radiator 10
It connects.
Above-mentioned insulation shell 71, heat preservation cap 72 and radiator 10 pass through 82 groups of the first sealing ring 81 and the second sealing ring
At a closed low-temperature insulation space.Specifically, the upper and lower end face setting of insulation shell 71 is fluted, and the first sealing ring 81 is set
It is placed in insulation shell 71 and keeps the temperature at the upper groove between cap 72, the second sealing ring 82 is set to insulation shell 71 and radiator
At lower groove between 10, it is good airtight that the first sealing ring 81 has insulation shell 71 with the junction for keeping the temperature cap 72
Property, the heat exchange inside and outside insulation shell 71 is reduced, similarly, the second sealing ring 82 makes between insulation shell 71 and radiator 10
Junction have good air-tightness.Between insulation shell 71 and heat preservation cap 72 and insulation shell 71 and radiator 10 it
Between can be connected by modes such as screw, bonding, riveting or clampings, it is preferable that selection screw be connected and fixed, screw connection side
Just it dismantles, good airproof performance is fixed, and good stability is able to maintain low-temperature insulation device shakes.
4, semiconductor coolers 5 of said one fixed module and a circuit board 3 form a refrigeration module.Institute
The quantity at least two of refrigeration module is stated, pressing plate 6 and all refrigeration modules are built in above-mentioned low-temperature insulation space, have
Body, all refrigeration modules are fixed on radiator 10 by pressing plate 6.All refrigeration modules in low-temperature insulation space are transversely arranged,
Outermost boundary of two refrigeration modules far from above-mentioned low-temperature insulation space.Above-mentioned low-temperature insulation space can for square,
The shapes such as cuboid or cylindrical body, concrete shape can make the adjustment of adaptability according to specific requirements difference, and the application exists
This does not make specifically to limit.
Fig. 4 is the schematic diagram of the section structure of fixed module, semiconductor cooler and photodiode in the application.Reference
Shown in Fig. 4, semiconductor cooler 5 has opposite huyashi-chuuka (cold chinese-style noodles) 51 and hot face 52, and photodiode 1 is fixed on by fixed module 4
Huyashi-chuuka (cold chinese-style noodles) 51 is stated, above-mentioned hot face 52 is connected to radiator 10, passes through Heat Conduction Material such as thermal conductive silicon between hot face 52 and radiator 10
Rouge connection.Fixed module 4 includes fastening elastic slice 41, bottom nozzle 42, upper tube socket 43 and bolt 44, and the top of fastening elastic slice 41 is opened
Screw hole equipped with perforation, above-mentioned bolt 44 are screwed into above-mentioned screw hole for fastening bottom nozzle 42 and upper tube socket 43, bottom nozzle 42 with it is upper
Tube socket 43 is provided with groove, and photodiode 1 is set to the groove between bottom nozzle 42 and upper tube socket 43, fastens elastic slice 41
Photodiode 1, bottom nozzle 42 and upper tube socket 43 are closely buckled in above-mentioned huyashi-chuuka (cold chinese-style noodles) 51.Specifically, bottom nozzle 42 and upper tube socket 43
Material is heat-conducting metal such as silver, copper, gold etc., and bottom nozzle 42 and upper tube socket 43 are provided with the groove of arc, bottom nozzle 42 and
The arc groove docking of upper tube socket 43 can wrap up the outer surface of photodiode 1 after getting up, photodiode 1 is set to down tube
Groove between seat 42 and upper tube socket 43, the bottom surface of bottom nozzle 42 and the huyashi-chuuka (cold chinese-style noodles) 51 of semiconductor cooler 5 pass through Heat Conduction Material
Such as heat-conducting silicone grease connection；Fastening elastic slice 41 is made of sheet metal, and metal sheets such as iron, copper, aluminium etc. have certain rigidity, energy
It bears certain tension and meets technical requirements；Above-mentioned fastening elastic slice 41 can pressed against tube socket 43 in its top after installation,
Above-mentioned fastening elastic slice 41 can also be higher than upper tube socket 43 in its top after installation；The top of fastening elastic slice 41 offers the spiral shell of perforation
Hole, above-mentioned screw hole make the bottom of bolt 44 pressed against tube socket 43 for being screwed into bolt 44, being screwed by bolt 44
Fastening force of the extent control to upper tube socket 43, photodiode 1 and bottom nozzle 42.The end for fastening the two sides of elastic slice 41 is inside
Lateral bending is converted into buckle, and above-mentioned buckle is for being stuck in the huyashi-chuuka (cold chinese-style noodles) 51 of semiconductor cooler 5.Through aforesaid way, fastening elastic slice 41 can
Conveniently and efficiently photodiode 1 to be fixed on above-mentioned huyashi-chuuka (cold chinese-style noodles) 51, and refrigeration needed for can guaranteeing photodiode 1
Effect.
Referring to Fig.1 shown in -3, all refrigeration modules in above-mentioned low-temperature insulation space share a block pressur plate 6, and pressing plate 6 passes through
All refrigeration modules are fixed on radiator 10 by screw, are fixed between pressing plate 6 and radiator 10 by screw, screw is easy to connect
Disassembly, good airproof performance is fixed, and good stability is able to maintain low-temperature insulation device shakes, certainly originally
It can also be fixed by modes such as bonding, riveting, clampings between the pressing plate 6 and radiator 10 of application.Above-mentioned pressing plate 6 uses toughness
Moderate plastic plate such as polytetrafluoroethylene (PTFE), since existing most semiconductor cooler 5 has ceramic material, toughness is suitable
In plastic plate can protect semiconductor cooler 5 and be unlikely to be weighed wounded damage, and again there is certain intensity can realize half
The fixation of conductor refrigerator 5.
Above-mentioned pressing plate 6 offers refrigerator placement hole, and all refrigerator placement holes correspond to all in low-temperature insulation space
Refrigeration module is transversely arranged, and the quantity of the refrigerator placement hole opened up and the quantity of semiconductor cooler 5 are consistent, semiconductor
Refrigerator 5, which only has part, can pass through above-mentioned refrigerator placement hole, i.e., the perimeter of refrigerator placement hole is between semiconductor cooler 5
Huyashi-chuuka (cold chinese-style noodles) 51 and hot face 52 perimeter between.Part semiconductor refrigerator 5 passes through pressing plate 6, with above-mentioned fixed module 4 and circuit
Plate 3 is set to the top of pressing plate 6, and the above-mentioned semiconductor cooler 5 in part and radiator 10 are set to the lower section of pressing plate 6.
By above embodiment, all refrigeration modules are set to the same low-temperature insulation space in low-temperature insulation device
Interior, all refrigeration modules share same block pressur plate, and all refrigeration modules are fixed on radiator, realize low-temperature insulation by pressing plate
The integration of device, it is easy for installation, it is at low cost.All refrigeration modules in low-temperature insulation space are transversely arranged, and outermost two
Boundary of a refrigeration module far from low-temperature insulation space, i.e. refrigeration module apart from insulation shell 71 farther out, it is possible to reduce refrigeration mould
Deblocking temperature is exchanged with the heat of ambient temperature, is freezed preferable with heat insulation effect.
The low-temperature insulation device of above-mentioned single-photon detector can also include thermal insulating filler, which is porous
One of material, heat-reflecting material and vacuum material three classes heat-barrier material are a variety of, such as foam bead, aeroge, heat-insulated
Cotton, vacuum heat-insulating plate etc., above-mentioned thermal insulating filler can be one or more kinds of combinations of above-mentioned material.Specifically, reference
Shown in Fig. 1-3, above-mentioned thermal insulating filler is full of all remaining spaces in above-mentioned low-temperature insulation space, such as the portion on 6 top of pressing plate
Point spare space fills in vacuum heat-insulating plate, remaining remaining space fills foam bead, and foam bead has good heat insulation,
The energy exchange in adjacent area can be effectively reduced.In the above manner, above-mentioned thermal insulating filler can reduce low-temperature insulation sky
Interior heat exchange and low-temperature insulation space are exchanged with the heat of ambient temperature, further enhance the guarantor of the device
Temp effect.
Shown in referring to Figure 1 and Figure 3, the part fiber 2 of connection photodiode 1 is needed through insulation shell 71, insulation cladding
Optical fiber through-hole is offered on body 71, the quantity of photodiode 1 is kept in the quantity of optical fiber through-hole and above-mentioned low-temperature insulation space
Unanimously, the diameter of optical fiber through-hole is greater than or equal to the diameter of optical fiber 2, and optical fiber 2 is sealed after running through above-mentioned optical fiber through-hole using colloid
The stayed gap of optical fiber through-hole, can meet the requirement of air-tightness using colloid hermetic fiber through-hole gap, sealing it is convenient and at
This is lower.
Referring to Fig.1 shown in -3, in the external setting of above-mentioned low-temperature insulation device, there are two types of electrical interfaces, with circuit board 3
It is electrically connected, electrical interface passes through above-mentioned insulation shell 71 and seals stayed gap using colloid.Above two electrical interface, tool
Body, one kind is coaxial line interface 91, and one kind is winding displacement interface 92, wherein the quantity of coaxial line interface 91 is two, a use
In inputting gate-control signal to circuit board 3, another is used to export the electric signal of detection, and winding displacement interface 92 is for inputting and exporting shape
State Detection & Controling signal.Circuit board 3 and photodiode 1 are electrically connected and are built in above-mentioned low-temperature insulation space, circuit board 3
The function of realizing that optical signal is converted into electric signal and weak signal processing is combined with photodiode 1.
A kind of single-photon detector, comprising: the low-temperature insulation device of the single-photon detector as described in any of the above-described.One
It include four refrigeration in a kind of low-temperature insulation space of single-photon detector referring to Fig.1 shown in -3 in kind feasible embodiment
Module, aforementioned four refrigeration module are placed on laterally side by side in the low-temperature insulation space of single-photon detector, they can be simultaneously
Work, which can also respectively divide the work, realizes different detections.
Combine detailed description and exemplary example that the application is described in detail above, but these explanations are simultaneously
It should not be understood as the limitation to the application.It will be appreciated by those skilled in the art that without departing from the application spirit and scope,
A variety of equivalent substitution, modification or improvements can be carried out to technical scheme and embodiments thereof, these each fall within the application
In the range of.The protection scope of the application is determined by the appended claims.
Claims (10)
1. a kind of low-temperature insulation device of single-photon detector, which is characterized in that including fixed module (4), semiconductor cooler
(5), circuit board (3), pressing plate (6), insulation shell (71), heat preservation cap (72), the first sealing ring (81), the second sealing ring (82)
And radiator (10)；
The insulation shell (71), heat preservation cap (72) and the radiator (10) pass through first sealing ring (81) and institute
It states the second sealing ring (82) and forms a closed low-temperature insulation space；
One fixed module (4), a semiconductor cooler (5) and a circuit board (3) form a refrigeration module,
The quantity at least two of the refrigeration module；
The pressing plate (6) and all refrigeration modules are built in the low-temperature insulation space, and the pressing plate (6) is by all institutes
It states refrigeration module and is fixed on the radiator (10)；
All refrigeration modules in the low-temperature insulation space are transversely arranged, and outermost two refrigeration modules are separate
The boundary in the low-temperature insulation space.
2. the low-temperature insulation device of single-photon detector according to claim 1, which is characterized in that the low-temperature insulation is empty
Between in all refrigeration modules share a block pressur plate (6), the pressing plate (6) consolidated all refrigeration modules by screw
Due to the radiator (10), the pressing plate (6) plastic plate moderate using toughness.
3. the low-temperature insulation device of single-photon detector according to claim 2, which is characterized in that the pressing plate (6) is opened
Equipped with refrigerator placement hole, the quantity of the refrigerator placement hole and the quantity of the semiconductor cooler (5) are consistent, institute
State semiconductor cooler (5) only have part can pass through the refrigerator placement hole, the fixed module (4), circuit board (3) with
And part semiconductor refrigerator (5) is set to the top of the pressing plate (6), the part semiconductor cooler (5) and described
Radiator (10) is set to the lower section of the pressing plate (6).
4. the low-temperature insulation device of single-photon detector according to claim 3, which is characterized in that further include heat-insulated filling
Object, the thermal insulating filler are one of porous material, heat-reflecting material and vacuum material three classes heat-barrier material or a variety of, institute
State the remaining space that thermal insulating filler is full of the low-temperature insulation space.
5. the low-temperature insulation device of single-photon detector according to claim 4, which is characterized in that the insulation shell
(71) upper and lower end face setting is fluted, and first sealing ring (81) is set to the insulation shell (71) and heat preservation cap
(72) at the upper groove between, second sealing ring (82) is set between the insulation shell (71) and radiator (10)
At lower groove, between the insulation shell (71) and heat preservation cap (72) and the insulation shell (71) and radiator (10) it
Between fixed by screw.
6. the low-temperature insulation device of single-photon detector according to claim 4, which is characterized in that further include that electricity connects
Mouthful, the electrical interface is connect with the circuit board (3), and the circuit board (3) connect with photodiode (1), the electricity
Interface is passed through the insulation shell (71) and is sealed using colloid.
7. the low-temperature insulation device of single-photon detector according to claim 4, which is characterized in that connection photodiode
(1) optical fiber (2) runs through the insulation shell (71), and optical fiber through-hole is offered on the insulation shell (71), and the optical fiber is logical
The quantity in hole and the quantity of photodiode (1) in the low-temperature insulation space are consistent, and the diameter of the optical fiber through-hole is big
In or be equal to the diameter of the optical fiber (2), the optical fiber (2), which is run through after the optical fiber through-hole, seals stayed gap using colloid.
8. the low-temperature insulation device of single-photon detector according to claim 4, which is characterized in that the semiconductor refrigerating
Device (5) has opposite huyashi-chuuka (cold chinese-style noodles) (51) and hot face (52), and photodiode (1) is fixed on described cold by the fixed module (4)
Face (51), the hot face (52) are connected to the radiator (10).
9. the low-temperature insulation device of single-photon detector according to claim 8, which is characterized in that the fixed module
It (4) include fastening elastic slice (41), bottom nozzle (42), upper tube socket (43) and bolt (44), the top of fastening elastic slice (41)
The screw hole of perforation is offered, the bolt (44) is screwed into the screw hole and is used to fasten the bottom nozzle (42) and upper tube socket (43),
The bottom nozzle (42) and upper tube socket (43) are provided with groove, photodiode (1) be set to the bottom nozzle (42) with it is upper
Groove between tube socket (43), the fastening elastic slice (41) is by photodiode (1), the bottom nozzle (42) and upper tube socket
(43) huyashi-chuuka (cold chinese-style noodles) (51) are closely buckled in.
10. a kind of single-photon detector, which is characterized in that including single-photon detector as described in any one of claim 1 to 9
Low-temperature insulation device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921556919.3U CN209605948U (en) | 2019-09-19 | 2019-09-19 | Single-photon detector and its low-temperature insulation device |
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| CN201921556919.3U CN209605948U (en) | 2019-09-19 | 2019-09-19 | Single-photon detector and its low-temperature insulation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112097901A (en) * | 2020-03-31 | 2020-12-18 | 科大国盾量子技术股份有限公司 | Refrigeration structure and single photon detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112097901A (en) * | 2020-03-31 | 2020-12-18 | 科大国盾量子技术股份有限公司 | Refrigeration structure and single photon detection device |
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