CN205808554U - Aneroid helium spectrometer thermostat black body radiation light source sample room - Google Patents
Aneroid helium spectrometer thermostat black body radiation light source sample room Download PDFInfo
- Publication number
- CN205808554U CN205808554U CN201620319806.1U CN201620319806U CN205808554U CN 205808554 U CN205808554 U CN 205808554U CN 201620319806 U CN201620319806 U CN 201620319806U CN 205808554 U CN205808554 U CN 205808554U
- Authority
- CN
- China
- Prior art keywords
- base
- thermostat
- light source
- black body
- sample room
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
This patent discloses a kind of aneroid helium spectrometer thermostat black body radiation light source sample room, sample room includes base, the cold screen of thermal radiation resistant, specimen holder, the copper billet of internal thermometer, fiberglass base, internal thermometer small footprint, thermometer and heating resistor film.This sample room is characterized mainly in that the interference utilizing thermal radiation resistant cold screen shielding External Heat Flux, utilizes heat-insulating black body radiation light-source system to radiate the monochromatic light of 10 μm wavelengths above.Achieve the testing research at low temperatures to faint phenomenon, the such as research to high sensitivity photoconduction semi-conducting material.
Description
Technical field
This patent is aneroid helium spectrometer thermostat one sample room, is specifically related to a kind of heat-insulating put light
Source structure, relates to the black body radiation light source under low temperature and the cold screen structure of shielding External Heat Flux, and it is right to be applied to
The photoelectric characteristic research at low temperatures of the semi-conducting material of high sensitivity photoconduction, by Planck law and
Law of conservation of energy thus obtain high sensitivity photoelectric characteristic semi-conducting material response spectrum at low temperatures.
Background technology
Currently with traditional monochromater system, semi-conducting material is carried out photoelectric characteristic research, be logical mostly
Crossing window and light is introduced sample room, owing to shielding the most completely, sample also can be subject to while monochromatic light exposure
One the strongest background black body radiation 300K impact.Owing to 300K is radiated the light of 10 mum wavelengths, existing
The light-source system deposited can not meet wavelength monochromatic light more than 10 μm, and then we cannot be to faint phenomenon
Study, such as the semi-conducting material of high sensitivity photoelectric characteristic, if introduce monochromatic light from the external world,
Background radiation institute radiated light energy is commonly greater than the energy of monochromater used by us, at the result data of research
In be difficult to precisely determine the excitation spectrum of light source.
The thermal capacitance of low temperature lower semiconductor material is as the reduction of temperature and reduces Debye model, so low
In temperature environment, semi-conducting material just can be heated rapidly by a light the most weak so that it is is brought rapidly up, thus
Corresponding photoelectric characteristic also can change.So studying high sensitivity photoelectric characteristic quasiconductor material in low temperature environment
Material needs an interference that can shield extraneous background radiation completely, and so we are accomplished by one at low temperature ring
Can excite under border the black matrix of variable wavelength light as light source, due to low temperature sample room limited space, at low temperature
The ideal black-body light source of lower work is not easy to find.So studying highly sensitive photoelectric characteristic quasiconductor material
Material, needs us to have a black body radiation light source that can work at low temperatures.
And for being not provided with installing the structure of light source in thermostat sample room currently on the market, they are still
Using and introduce monochromater from window, if installing light source, in the sample room shielded completely, also lacking one simultaneously
Individual heat-insulating put light-source structure.
Summary of the invention
The purpose of this patent designs the sample room of a kind of aneroid helium spectrometer thermostat black body radiation light source, sample
Room reaches to shield External Heat Flux interference completely in low temperature environment, installs the ideal type that can normally work black
Body radiating light source, requires to have heat-insulating with cold head to put light-source structure, by two independent temperature simultaneously
Degree score not Jian Ce sample room and light-source temperature and change thereof, thus be applied to high sensitivity photoconduction
Semi-conducting material photoelectric characteristic research at low temperatures, by Planck law and law of conservation of energy thus
To high sensitivity photoelectric characteristic semi-conducting material response spectrum at low temperatures.
The technical scheme of this patent is as follows:
The sample room of aneroid helium spectrometer thermostat black body radiation light source is to have: base 101, thermal radiation resistant is cold
Screen 102, specimen holder 103, the copper billet 104 of internal thermometer, fiberglass base 105, internal thermometer is little
Base 106, thermometer 107 forms with heating resistor film 108.
Base 101 is the circular base plate structure of two disjunctors, and chassis size is according to existing aneroid helium spectrometer
Thermostat designs, simultaneously it is also determined that the position of circle disk center through hole.Top bottom-disc is smooth, low bottom-disc sidewall band
M50 screw thread, the seat, the center of circle of disk sets a little through hole, the holding wire of instrument and other power line and passes
Through hole is fixed, and seals with aluminum foil and adhesive tape.9 duplicate through holes it are equipped with, its circle on top bottom-disc edge
The heart is on chassis for the limit of center of circle Φ=76.2mm, 105 ° of concrete seat, 135 °, 180 ° of arrays
Forming, base 101 is fixed on the cold head of temperature controller by the copper screw of available M5 by through hole.The center of circle
The left side of horizontal level, is M6 screwed hole, and it is connected with fiberglass base 105.By center of circle water
There are two M3 screwed holes of symmetry on the vertical line of horizontal line, be used for installing the copper billet 104 of internal thermometer.
The center of circle is to the right two equidistant M3 screwed holes, fixing specimen holder 103, refers to accompanying drawing 1.
The cold screen of thermal radiation resistant 102, built-in M50 screw thread 8 encloses, and cold screen sidewall symmetry existence four is equirotal
Through hole, position is relative with temperature controller window, with realize we need in external light source light lead to sample room.But
When doing black body radiation light-source system, it is sealed against with aluminium glue band, to ensure to shield completely the work of External Heat Flux
With, refer to accompanying drawing 1.
Specimen holder 103, the ear of two the fixing specimen holders in top, and set through hole, fix with base 101.Root
According to the demand that we are different, current specimen holder 103 is designed with two kinds, a kind of black body radiation light source that can be used for
103 1,2, lower end sets two screw M2.5 can fix sample, and sample can lie in effective illumination range
In.Having two M2.5 screwed holes on the horizontal line of upper end, base, they not only can be used to assist fixing sample
Product, and connect with copper sheet and specimen holder can be assisted more effectively sample to be lowered the temperature and heat up.Another kind of
Being the specimen holder 103 3,4 of dress visible light source LED, light source led can be fixed on through hole topmost, sample
Product are fixed on four M2.5 screwed holes that circumference encloses, and refer to accompanying drawing 2.
The copper billet 104 of internal thermometer, is a cuboid, and copper billet sidewall through hole is punched, and hole size is slightly
More than thermometer 107 diameter, thermometer 107 is just placed in through-holes, on the copper billet 104 of internal thermometer
Make a call to a through hole below, be fixed on base 101 with M3 copper screw, refer to accompanying drawing 1.
Fiberglass base 105, this is a thermal insulation structure.Upper end is M6 threaded post, totally 4 circle screw thread,
It is connected with base 101.Lower end is column type, sets M4 screwed hole with cylindrical center, it and built-in temperature
Degree meter small footprint 106 is connected.
Internal thermometer small footprint 106, lower end is M4 thread cylinder, can screw in fiberglass base 105
In heart screwed hole.Internal thermometer small footprint 106 upper end is integrated with the copper billet of cuboid.One is set in copper billet
Through hole, special placement thermometer 107, refers to accompanying drawing 1.
Thermometer 107, cylindrical.It is individually positioned in internal thermometer copper billet 104 and internal thermometer small footprint
In 106 bodies, refer to accompanying drawing 3.
Heating resistor film 108, with sapphire Al2O3For the Ti-Au resistance of substrate, during use be attached to built-in
The side of thermometer small footprint 106, as whole black body radiation light-source system, refers to accompanying drawing 4.
It is characterized in that, described base 101 is fixed on the cold head of thermostat with M4 copper screw, sample
Frame 103 M3 copper screw is fixed on base 101, and the cold screen of thermal radiation resistant 102 and base 101 are by spiral shell
Stricture of vagina is fixing to be connected, and specimen holder 103 is connected with M3 copper screw is fixing with base 101.Internal thermometer
Copper billet 104 M3 copper screw is fixed on base 101, heat-insulating fiberglass base 105 and base
101 by the connection that is screwed, and internal thermometer small footprint 106 and fiberglass base 105 are by being screwed
Connect, thermometer 107 respectively device in copper billet 104 with small footprint 106, adding with sapphire as substrate
Thermal resistance sheet 108 is attached to the sidewall of internal thermometer small footprint 106, heating resistor film 108 and two temperature
Meter 107 is all connected with temperature controller.
The advantage of this patent: the screw thread setting certain altitude in the cold screen of thermal radiation resistant 102 of sample room facilitates us
Space size in regulation and control sample room.Indoor are provided with two thermometeies 107, can monitor in sample room accurately
Temperature and the different temperatures of black body radiation light source.Black body radiation light-source system can radiate 10 μm wavelengths above
Monochromatic light, with base 101 fiberglass base 105 insulation process.The heating resistor film of light-source system
108 with sapphire Al2O3For the Ti-Au resistance of substrate, highly stable under low temperature, sapphire heat conductivity is more
Effective heating black body radiating light source.Luminous copper block surface the plating Au, Au of black body radiation light-source system launch
Rate ε～1.
Accompanying drawing explanation
The integrally-built two-dimensional cross section in Fig. 1: sample room, in figure, each several part is: base 101, thermal radiation resistant
Cold screen 102, specimen holder 103, the copper billet 104 of internal thermometer, fiberglass base 105, internal thermometer
Small footprint 106, thermometer 107 and heating resistor film 108.
Fig. 2: specimen holder 103, figure (1), (2) are to can be used for black body radiation light source specimen holder side view respectively
With top view, figure (3), (4) are specimen holder side view and the top view that can fill visible light source LED respectively.
Fig. 3: thermometer 107, measures scope 1.4K～420K.
Fig. 4: heating resistor film 108, with sapphire Al2O3The Ti-Au resistance of substrate, Ti-Au at low temperatures
Resistance is more stable.
Fig. 5: blackbody source and the temperature curve of sample room.
Fig. 6: in the case of blackbody source temperature 100K, the light that different wavelengths of light is absorbed by unit interval sample
Subnumber curve chart.
Fig. 7: the absorbed power of Same Wavelength light sample and the curve chart of blackbody source temperature.
Fig. 8: test the curve chart of sample swelling current and the blackbody source temperature recorded.
Detailed description of the invention
Illustrate to provide a preferable example of this patent below according to patent content and accompanying drawing, enter in conjunction with example
One step explanation the art of this patent details, architectural feature and functional characteristics.But this example is not limiting as this patent model
Enclose, in accordance with patent content and accompanying drawing illustrate described in example should be included in this patent in the range of.
Two thermometeies 107 we select the measurement weight range of temperature to be 1.4K～420K, heating resistor film 108
We take Ω=100 Ω.We measure respectively with temperature controller the temperature of sample room and blackbody source be T and
Temitter.As shown in Figure 5.
During as cooling experiment, it is cooled to temperature T=2.25K in lowest temperature sample room, the temperature of blackbody source
Degree Temitter=4.2K, when we open blackbody source i.e. internal thermometer small footprint 106 i.e. to its heating liter
Temperature also arranges TemitterDuring=10K, blackbody source rapidly and stably reaches design temperature 10K, and by perseverance
The automatic regulating system of Wen Yi also keeps stationary temperature constant, when the temperature of blackbody source is 10K, I
From Fig. 5 this it appears that sample indoor temperature T is held essentially constant, and actual sample indoor temperature
Rise to 2.27K, in the environment of extremely low temperature, blackbody source is heated, and heating resistor film 108 is to sample
The heat rate of product indoor temperature is 0.2%, it is clear that the insulation effect of fiberglass base 105 reaches our want
Ask.When closing blackbody source, temperature is also to reach stationary value T rapidlyemitter=4.2K, shows me simultaneously
When closing blackbody source system, black body radiation is smaller to the delay action of sample illumination.When I am light source
Temperature is set as TemitterDuring=100K, it is possible to stably reach the temperature set, due to the carryover effects of heating,
The temperature of blackbody source has a buffering effect heated, and temperature can exceed to be had individual with the interval less than 100K
Of short duration fluctuation, by temperature controller auto-control, blackbody source quickly reaches the stationary value of setting.Such
One heating buffering course, is as the T setemitterThe highest, buffer time is the longest.And we can be from
In the figure in Fig. 5 upper right corner it will be seen that when blackbody source reach we set temperature 100K time, sample
Room temperature is affected by heating resistor film 108 heat to be risen to 3.3K and stablizes, now heating resistor film 108
Heat rate 1% to sample room, heating power is along with the heating resistor film 108 liter to blackbody source heating-up temperature
High and increase, but the increasing within the scope of our acceptance of sample indoor temperature.
Obtained by Planck law, the photon amount in the unit interval:
Φ=ε M (λ, Temitter)Ω△λdS/(hc/λ)
Wherein:
M (λ, Temitter)=(2hc2/λ5){exp(hc/λkTemitter)-1},
λ is the wavelength of exciting light, and Temitter is the temperature of black matrix, and k is Boltzmann constant
K=1.38 × 10-23J.K-1, c be light velocity c=3.00 × 108m/s, h be Planck's constant
H=6.626 × 10-34J.s.S is black matrix light-emitting area S=2.5 × 10-5m2, △ λ d sample bandwidth, vertical
Body angle Ω=S0/d2, S0 is surface area of sample, and d is the light source distance according to sample.
We take GaAs/AlGaAs double quantum well structure, sample area S0=1 × 10-5m2,△λd=1 μm,
D=3.5cm, Ω=0.0082sr, T=100K, as shown in Figure 6, the sample of unit interval energy absorbs different ripple
The number of photons curve of long light.
The light absorbing power P of sample surfaces=a Φ hv=a Φ hc/ λ, a=1 as shown in Figure 6, Same Wavelength
The power curve of sample absorption at different temperatures.
We survey the curve of sample current and blackbody source temperature from experiment as it is shown in fig. 7, by △ I=RP, electricity
Stream responsiveness R=4 × 104～4 × 106A/W, law of conservation of energy obtains the electric current of sample growth and is proportional to sample
Absorbed power, curve matching contrasts thus obtains response wave length 14.7 μm of GaAs/AlGaAs double quantum well.
Claims (8)
1. an aneroid helium spectrometer thermostat black body radiation light source sample room, including base (101), the cold screen of thermal radiation resistant (102), specimen holder (103), the copper billet (104) of internal thermometer, fiberglass base (105), internal thermometer small footprint (106), thermometer (107) and heating resistor film (108), it is characterised in that:
Described base (101) is fixed on the cold head of thermostat with M4 copper screw, specimen holder (103) M3 copper screw is fixed on base (101), the cold screen of thermal radiation resistant (102) is connected by being screwed with base (101), and specimen holder (103) is connected with M3 copper screw and base (101) are fixing；The copper billet (104) of internal thermometer M3 copper screw is fixed on base (101), heat-insulating fiberglass base (105) is connected by being screwed with base (101), and internal thermometer small footprint (106) is connected by being screwed with fiberglass base (105), thermometer (107) device respectively is in copper billet (104) with small footprint (106), heating resistor film (108) with sapphire as substrate is attached to the sidewall of internal thermometer small footprint (106), heating resistor film (108) is all connected with temperature controller with two thermometeies (107).
A kind of aneroid helium spectrometer thermostat black body radiation light source sample room the most according to claim 1, it is characterized in that: described base (101) is the circular base plate structure that differs in size of two disjunctors, large chassis is smooth, little chassis side wall band M50 screw thread, the seat, the center of circle of disk sets a little through hole；Be equipped with the through hole that base (101) is fixed on the cold head of temperature controller by the copper screw of 9 available M5 by through hole on large chassis edge, 105 ° of concrete seat, 135 °, 180 ° of arrays form；The left side of base (101) center of circle horizontal level, if the M6 screwed hole that fiberglass base (105) screws in can be made, at the M3 screwed hole of the copper billet (104) by there are two fixing internal thermometer on the vertical line of base (101) center of circle, base (101) center of circle is to the right is used for fixing specimen holder (103) M3 screwed hole.
A kind of aneroid helium spectrometer thermostat black body radiation light source sample room the most according to claim 1, it is characterized in that: in the cold screen of described thermal radiation resistant (102), have the 7 circle female threads that external screw thread upper with base (101) is connected, specimen holder (103) bottom is controlled by the number of turns of the screw thread that spins with cold screen (102) bottom space, cold screen has four through holes corresponding with the window of thermostat.
A kind of aneroid helium spectrometer thermostat black body radiation light source sample room the most according to claim 1, it is characterized in that: described specimen holder (103) structure is: specimen holder (103) lower end is provided with two screw M2.5 being used for fixing sample, upper end is provided with can be fixed scale copper and play the fixing sample of auxiliary and the through hole M2.5 making sample lower the temperature faster and heat up；Or it is: specimen holder (103) lower end is provided with four the M2.5 screwed holes that can fix sample, and there is the through hole that can fix visible light source LED upper end.
A kind of aneroid helium spectrometer thermostat black body radiation light source sample room the most according to claim 1, it is characterized in that: the copper billet (104) of described internal thermometer is the copper billet of a cuboid, internal setting the cylindrical hole that can put thermometer, top and bottom set one and can use M3 copper screw to be fixed on the through hole of base (101).
A kind of aneroid helium spectrometer thermostat black body radiation light source sample room the most according to claim 1, it is characterized in that: described fiberglass base (105) is two cylinder disjunctor compositions differed in size, the external screw thread that can screw in base (101) is had on small column, thread turns is 5 circles, and big cylindrical center has thread turns to be more than the female thread of 5 circles.
A kind of aneroid helium spectrometer thermostat black body radiation light source sample room the most according to claim 1, it is characterized in that: the lower end of described internal thermometer small footprint (106) is cylinder, upper end is cuboid copper billet, the external screw thread of cylindrical band 5 circle, cuboid inner surface has plated Ti-Au, and internal have the cylindrical hole that can put thermometer.
A kind of aneroid helium spectrometer thermostat black body radiation light source sample room the most according to claim 1, it is characterised in that: the substrate of described heating resistor film (108) is exceptionally heat-conductive sapphire Al2O3, sapphire plates Ti-Au and adds thermal resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620319806.1U CN205808554U (en) | 2016-04-15 | 2016-04-15 | Aneroid helium spectrometer thermostat black body radiation light source sample room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620319806.1U CN205808554U (en) | 2016-04-15 | 2016-04-15 | Aneroid helium spectrometer thermostat black body radiation light source sample room |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205808554U true CN205808554U (en) | 2016-12-14 |
Family
ID=58144295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620319806.1U Withdrawn - After Issue CN205808554U (en) | 2016-04-15 | 2016-04-15 | Aneroid helium spectrometer thermostat black body radiation light source sample room |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205808554U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758527A (en) * | 2016-04-15 | 2016-07-13 | 中国科学院上海技术物理研究所 | Liquid-helium-free spectroscopy thermostat black-body radiation light source sample room |
| CN110440912A (en) * | 2019-08-19 | 2019-11-12 | 中国电子科技集团公司第四十一研究所 | A kind of use for laboratory low temperature radiometer |
-
2016
- 2016-04-15 CN CN201620319806.1U patent/CN205808554U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758527A (en) * | 2016-04-15 | 2016-07-13 | 中国科学院上海技术物理研究所 | Liquid-helium-free spectroscopy thermostat black-body radiation light source sample room |
| CN105758527B (en) * | 2016-04-15 | 2019-09-27 | 中国科学院上海技术物理研究所 | A kind of aneroid helium spectrometer thermostat black body radiation light source sample room |
| CN110440912A (en) * | 2019-08-19 | 2019-11-12 | 中国电子科技集团公司第四十一研究所 | A kind of use for laboratory low temperature radiometer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106370312B (en) | The measurement method of absolute radiometer and absolute radiometer spatial context radiant heat transfer | |
| CN106338469A (en) | Optical Characteristic Measurement System And Calibration Method For Optical Characteristic Measurement System | |
| CN205808554U (en) | Aneroid helium spectrometer thermostat black body radiation light source sample room | |
| CN103630236B (en) | A kind of conical cavity type high-energy laser total-absorption energy meter | |
| CN104111110B (en) | The cross Terahertz absorbing structure of top expansion and application thereof | |
| CN106768372A (en) | A kind of low temperature radiometer blackbody chamber | |
| CN108827463A (en) | A kind of immersion hypersorption superlaser power energy meter | |
| US20130206989A1 (en) | Radiation Sensor | |
| US4726688A (en) | Monitored background radiometer | |
| CN109142228B (en) | Method for carrying out spectrum experiment by utilizing sample cavity | |
| CN110823364A (en) | High-intensity illuminometer calibration device and calibration method | |
| CN201110883Y (en) | Semiconductor lighting device thermal performance measuring apparatus | |
| CN101813650B (en) | Radiometer for performance in-situ test of thermal control coat | |
| CN110068392A (en) | A kind of luminous flux measurement device and method of LED light source | |
| CN105758527B (en) | A kind of aneroid helium spectrometer thermostat black body radiation light source sample room | |
| CN102680878A (en) | Experiment method of junction temperature of LED (light emitting diode) | |
| WO2024174315A1 (en) | Thermopile infrared detector and preparation method therefor, and ndir detection system | |
| RU2449263C1 (en) | Apparatus and method of controlling radiation flux when conducting ground-based thermal-vacuum tests on spacecraft | |
| CN109084901A (en) | A kind of infrared radiation sensor | |
| CN212340428U (en) | Measuring device for luminous characteristic of infrared thermal radiation light source | |
| CN107655833B (en) | Method and system for measuring high-temperature hemispherical emissivity of low-thermal-conductivity non-conductor material | |
| CN207263931U (en) | One kind is used for the constant temperature spectrum stabilization system of NaI (Tl) gamma energy spectrometer | |
| Inan et al. | A multi-functional design approach and proposed figure of merits for solid state lighting systems | |
| CN109470655A (en) | The measuring system and method for high reflectance fruit surface wax content based on light scattering | |
| CN104391004B (en) | A kind of test device and method of lossless light fixture heat dispersion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161214 Effective date of abandoning: 20190927 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20161214 Effective date of abandoning: 20190927 |