CN206209221U - Atom optically-active rejection trap - Google Patents
Atom optically-active rejection trap Download PDFInfo
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- CN206209221U CN206209221U CN201621299070.2U CN201621299070U CN206209221U CN 206209221 U CN206209221 U CN 206209221U CN 201621299070 U CN201621299070 U CN 201621299070U CN 206209221 U CN206209221 U CN 206209221U
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- air chamber
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Abstract
The utility model is related to a kind of atom optically-active rejection trap, including the first atomic air chamber filled with atomic gas；Two Glan-Taylor prisms parallel to each other on the polarization direction of light, are respectively placed in the both sides of the first atomic air chamber, and the gas atom in the first atomic air chamber can produce sufficient Faraday to act under conditions of plus external magnetic field with laser；One magnetostatic field source of stabilization, a static uniform magnetic field is produced to the first atomic air chamber, and the magnetic direction in magnetic field is parallel to laser propagation direction；The second atomic air chamber filled with atomic gas, can occur saturated absorption with laser；Two temperature-control circuit systems, are respectively acting on the first atomic air chamber and the second atomic air chamber.The utility model utilizes faraday anomalous dispersion effect and saturated absorption controllable at atomic transition wavelength, obtains narrow-band band-elimination trap characteristic at specific wavelengths, and having outside stopband has rejection ratio high in high transmittance, stopband.
Description
Technical field
The utility model is related to optical frequency wave band rejection trap technical field, and in particular to a kind of atom optically-active band hinders trap
Device.
Background technology
The rejection trap of optical frequencies（Hereafter abbreviation trapper）With narrow-band band-elimination trap characteristic at specific wavelengths,
There are various peculiar advantages such as rejection ratio high in high transmittance, stopband outside stopband.The rejection trap of optical frequencies is in laser cloth
In different basic scientific researches and the spectrum of use field such as deep spectrum, biological vital tissue imaging, laser and atomic spectrum filtering
Suffer from universal and important extensive use.
The rejection trap of traditional optical frequencies, is the interference piece type rejection trap realized by multiple coating technique,
Two shortcoming：One is bandwidth of rejection too wide, and up to nanometer is to several nanometer scales；Second has the disadvantage the centre wavelength of stopband
Change with incident angle of light, neither one absolute value.
Utility model content
In order to solve the above problems, the purpose of this utility model is to provide that a kind of narrow-band band-elimination is narrow, high precision based on
The saturated absorption of the optical frequencies of atomic transition spectral line and the rejection trap of atom optically-active combined effect.
In order to realize above-mentioned purpose, the utility model employs following technical scheme：
Atom optically-active rejection trap, including the first atomic air chamber filled with atomic gas；Two polarization directions in light
Upper Glan-Taylor prism parallel to each other, is respectively placed in the both sides of the first atomic air chamber, and just to the first atomic air chamber, and described the
Gas atom in one atomic air chamber, can produce sufficient Faraday to act under conditions of plus external magnetic field with laser；
One magnetostatic field source of stabilization, acts on the first atomic air chamber, and a static uniform magnetic field is produced to the first atomic air chamber, magnetic field
Magnetic direction is parallel to laser propagation direction；The second atomic air chamber filled with atomic gas, just projects the lattice on direction to laser
Blue Taylor prism, can occur saturated absorption with laser；Two temperature-control circuit systems, are respectively acting on the first atom gas
Room and the second atomic air chamber, control the first atomic air chamber and the second atomic air chamber temperature to be in stabilization respectively.
As optimal technical scheme, Alkali Metal Rb atomic gas are filled in the first atomic air chamber and the second atomic air chamber.
As optimal technical scheme, filling with inert gas in the first atomic air chamber and the second atomic air chamber.
As optimal technical scheme, magnetic field size in 250 Gausses between 700 Gausses, magnetic in the range of the first atomic air chamber
The Grad of field is less than 8 Gausses.
Used as optimal technical scheme, the temperature range of the first atomic air chamber is between 80 degrees Celsius to 150 degrees Celsius；Second
The temperature range of atomic air chamber is between 120 degrees Celsius to 170 degrees Celsius.
Used as optimal technical scheme, temperature-controlled precision is in 0.5 degree Celsius.
As optimal technical scheme, magnetic field is produced by annular permanent magnet or spiral winding.
Used as optimal technical scheme, the container material quality of the first atomic air chamber and the second atomic air chamber is glass or quartz.
The utility model make use of the wavelength characteristic that the intrinsic energy level transition spectral line of atom has, using in atomic transition ripple
The controllable faraday anomalous dispersion effect of strong point and saturated absorption, construct a kind of integrated atom optically-active of small size
Rejection trap, wherein the first atomic air chamber produces rotation effect, second under conditions of temperature and additional magnetostatic field is regulated
Atomic air chamber produces saturated absorption at a certain temperature, and the combined effect of two air chambers obtains narrow-band band-elimination at specific wavelengths and falls into
Wave property.The utility model has outside stopband and has rejection ratio high in high transmittance, stopband.The utility model has following
Advantage, one is very narrow bandwidth of rejection, small to several micromicrons even several femtometre magnitudes, than traditional interference piece type rejection trap
The small several orders of magnitude of bandwidth；Two is that the centre wavelength of stopband is decided by atomic transition spectral line, highly stable, with one definitely
Value, it is unrelated with angle of light degree is penetrated.Design principle is apparent, and structure is very simple, it is easy to manufacture, and performance is good, working stability, the life-span
It is long, laser Brillouin spectrum is high-precision with biological vital tissue to be recognized to the laser under specific condition and atomic spectrum superhigh precision
The fields such as close imaging have extensive significance.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the related energy diagram of rubidium atom optically-active rejection trap in the utility model embodiment 1.
Fig. 3 is use step schematic diagram of the present utility model.
Specific embodiment
The preferred embodiment to this patent is described in further detail below in conjunction with the accompanying drawings.
Embodiment 1：
The present embodiment is the faraday anomalous dispersion effect and saturated absorption effect based on rubidium atomic gas at transition wavelength
The atom optically-active rejection trap that should be built, its structure including play optically-active as shown in figure 1, fill Alkali Metal Rb atomic gas
The first atomic air chamber 3；Two Glan-Taylor prisms 1,5 parallel to each other on the polarization direction of light, are respectively placed in first former
The both sides of sub- air chamber 3, and just to the first atomic air chamber 3；Two annular permanent magnets 2 as magnetostatic field source, for former to first
Sub- air chamber 3 produces a static uniform magnetic field, and the magnetic direction in magnetic field is parallel to laser propagation direction；Play filling for saturated absorption
Second atomic air chamber 6 of Alkali Metal Rb atomic gas；Two temperature-control circuit systems, are respectively acting on the first atomic air chamber 6
With the second atomic air chamber 6, the first atomic air chamber 3 and the temperature of the second atomic air chamber 6 is controlled to be in stabilization respectively.
By laser by Glan-Taylor prism 1, the first atomic air chamber 3 is reached, then by Glan-Taylor prism 5, obtained
The application test beams of outgoing.Glan-Taylor prism 1 is with the device being polarized with analyzing function, lattice with Glan-Taylor prism 5
Woods Taylor prism 1,5 place planes are vertical with laser propagation direction.It is flat between the polarization direction of setting Green Taylor prism 1,5
Row degree error is less than 1.5 degree, and after laser produces sufficient Faraday to act in the first atomic air chamber 3, frequency is former in rubidium
Light near sub- intrinsic frequency is effectively ended, and frequency is away from the luminous energy near rubidium atom intrinsic frequency from Glan-Taylor prism
5 outgoing, laser from after the outgoing of Glan-Taylor prism 5, then by playing the second atomic air chamber 6 of saturated absorption, two air chambers
Combined effect obtain narrow-band band-elimination trap characteristic at specific wavelengths.
The material of the container material quality and polarizer of the first atomic air chamber 3 and the second atomic air chamber 6 is glass or quartz.Temperature
Control circuit system includes heating part and temperature measurement fraction, the first atomic air chamber 6 and the second atom when being worked for systems stabilisation
The temperature of Alkali Metal Rb atom vapor in air chamber 6, its heating part is added to the first atomic air chamber 6 and the second atomic air chamber 6
Heat, and ensure that being agglomerated to obstruction light on the container end face of the first atomic air chamber 6 and the second atomic air chamber 6 without atom passes through；Survey
The tight atomic air chamber 6 of first atomic air chamber 6 and second of isothermal segment carries out temperature survey.Temperature-control circuit system can with heater strip or
Heating chip form heating, with thermistor or thermocouple temperature measurement.Heating part and temperature measurement fraction coordinate, and make the first atomic air chamber
Temperature range between 80 degrees Celsius to 150 degrees Celsius, the temperature range of the second atomic air chamber is taken the photograph at 120 degrees Celsius to 170
Between family name's degree, and temperature-controlled precision is within 0.5 degree Celsius.
In the above-described embodiments, magnetic field is produced by permanent magnet, also can produce magnetic field by modes such as spiral windings.Specifically
The magnetic field parameter condition of implementation is that the static uniform magnetic field size of control can adjust in 250 Gausses between 700 Gausses, and make
The Grad in magnetic field is less than 8 Gausses in the range of atomic air chamber.
As shown in Figures 2 and 3, the application method of above-mentioned atom optically-active rejection trap is comprised the following steps：
Step 101：With the first atomic air chamber and the second atomic air chamber, the two Glan Taylors that fill Alkali Metal Rb atomic gas
Prism or polarizer, a magnetostatic field source and two temperature control systems set up the atom optically-active rejection trap of above-described embodiment；
Step 102：The polarization direction of two Glan-Taylor prisms of regulation or polarizer is parallel to each other, using them to incidence
Laser carries out selecting light；
Step 103：Adjustment effect makes the temperature range of the first atomic air chamber in the temperature control system of the first atomic air chamber
Between 80 degrees Celsius to 150 degrees Celsius, adjustment effect makes the second atomic air chamber in the temperature control system of the second atomic air chamber
Temperature range between 120 degrees Celsius to 170 degrees Celsius；
Step 104：Adjustment effect makes the static-magnetic in the range of the first atomic air chamber in the magnetostatic field source of the first atomic air chamber
Field size is in 250 Gausses between 700 Gausses；Faraday using Alkali Metal Rb atomic gas in the presence of external magnetic field is unusual
Effect of dispersion, make incident laser produce optically-active, and coordinate Glan-Taylor prism or polarizer carry out incident laser rubidium atom jump
Move the trap on the corresponding specific wavelength of spectral line；
Step 105：Enter the second atomic air chamber from the laser of step 104 outgoing, using Alkali Metal Rb atomic gas in spy
Determine the saturated absorption treatment that the saturated absorption at temperature is carried out on specific wavelength to incident laser, can by combined effect
To obtain the atom optically-active rejection trap of the rubidium atomic transition wavelength such as 780nm corresponding with rubidium atomic transition spectral line, 795nm；
Above-described embodiment based on air chamber atom optically-active rejection trap, may also include a metal shell, for fixed and
Each element is protected, and each element is in accurate mutual alignment by strict size, tolerance design；The shell can also
Shielding outside electromagnetic interference.
Above-described embodiment based on air chamber atom optically-active rejection trap, using temperature control system, to alkali metal atom
Bubble carries out thermostatic control, improves the stability of a system；Plus the design of shell, outside electromagnetic interference can be masked, it is ensured that gas
The signal to noise ratio of room atom optically-active rejection trap is higher.
Above-described embodiment merely to illustrate principle of the present utility model, not for limiting scope of the present utility model.
Those skilled in the art can make an amendment and change under without prejudice to know-why of the present utility model and spirit to embodiment,
Variety classes gas atom helium, neon, argon, krypton, xenon, or Alkali Metal Rb caesium, potassium, sodium, or even mixed type can such as be utilized
The atom such as mixed potassium and sodium, or even inert gas, reach the purpose of the air chamber atom optically-active rejection trap of other different wave lengths
And effect.
Claims (8)
1. atom optically-active rejection trap, it is characterised in that
Including the first atomic air chamber filled with atomic gas；
Two Glan-Taylor prisms parallel to each other on the polarization direction of light, are respectively placed in the both sides of the first atomic air chamber, and
Just to the first atomic air chamber, the gas atom in first atomic air chamber can be produced under conditions of plus external magnetic field with laser
The sufficient Faraday effect of life；
One magnetostatic field source of stabilization, acts on the first atomic air chamber, and a static uniform magnetic field, magnetic are produced to the first atomic air chamber
The magnetic direction of field is parallel to laser propagation direction；
The second atomic air chamber filled with atomic gas, just projects the Glan-Taylor prism on direction to laser, can occur with laser
Saturated absorption；
Two temperature-control circuit systems, are respectively acting on the first atomic air chamber and the second atomic air chamber, and the first original is controlled respectively
Sub- air chamber and the second atomic air chamber temperature are in stabilization.
2. atom optically-active rejection trap according to claim 1, it is characterised in that the first atomic air chamber and the second atom
Alkali Metal Rb atomic gas are filled in air chamber.
3. atom optically-active rejection trap according to claim 2, it is characterised in that the first atomic air chamber and the second atom
Filling with inert gas in air chamber.
4. atom optically-active rejection trap according to claim 2, it is characterised in that magnetic field size is in 250 Gausses to 700
Between Gauss, the Grad in magnetic field is less than 8 Gausses in the range of the first atomic air chamber.
5. atom optically-active rejection trap according to claim 2, it is characterised in that the temperature range of the first atomic air chamber
Between 80 degrees Celsius to 150 degrees Celsius；The temperature range of the second atomic air chamber is between 120 degrees Celsius to 170 degrees Celsius.
6. atom optically-active rejection trap according to claim 5, it is characterised in that temperature-controlled precision is in 0.5 degree Celsius.
7. atom optically-active rejection trap according to claim 1, it is characterised in that by annular permanent magnet or helix
Circle produces magnetic field.
8. atom optically-active rejection trap according to claim 1, it is characterised in that the first atomic air chamber and the second atom
The container material quality of air chamber is glass or quartz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621299070.2U CN206209221U (en) | 2016-11-30 | 2016-11-30 | Atom optically-active rejection trap |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621299070.2U CN206209221U (en) | 2016-11-30 | 2016-11-30 | Atom optically-active rejection trap |
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| Publication Number | Publication Date |
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| CN206209221U true CN206209221U (en) | 2017-05-31 |
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| CN201621299070.2U Expired - Fee Related CN206209221U (en) | 2016-11-30 | 2016-11-30 | Atom optically-active rejection trap |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106444098A (en) * | 2016-11-30 | 2017-02-22 | 浙江大学城市学院 | Atomic optical rotation type band-rejection trap and application method thereof |
-
2016
- 2016-11-30 CN CN201621299070.2U patent/CN206209221U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106444098A (en) * | 2016-11-30 | 2017-02-22 | 浙江大学城市学院 | Atomic optical rotation type band-rejection trap and application method thereof |
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| 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: 20170531 Termination date: 20191130 |