CN103701030B - A kind of unimodal for laser frequency stabilization 87rb isotope atom filter and filtering method thereof - Google Patents
A kind of unimodal for laser frequency stabilization 87rb isotope atom filter and filtering method thereof Download PDFInfo
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- CN103701030B CN103701030B CN201410004968.1A CN201410004968A CN103701030B CN 103701030 B CN103701030 B CN 103701030B CN 201410004968 A CN201410004968 A CN 201410004968A CN 103701030 B CN103701030 B CN 103701030B
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Abstract
The present invention relates to a kind of unimodal for laser frequency stabilization
87rb isotope atom filter and use described atomic light filter to carry out the method filtered.This filter is made up of devices such as outside cavity gas laser 1, optical isolator 2, first semi-transparent semi-reflecting lens 3, second semi-transparent semi-reflecting lens 4, first high reflective mirror 5, natural rubidium bubbles 6.The present invention utilizes isotope
87the faraday anomalous dispersion effect of Rb ground state atom in magnetic field, produces uniform magnetic field by magnetic field sources such as permanent magnets, makes laser atom interaction, changes laser polarization direction.Utilize two pieces of devating prisms to limit laser-transmitting polarization direction, select characteristic frequency light wave, reach the object of optical filtering.System is made to be in good working order by temperature control system.Unimodal atomic light filter structure of the present invention is simple, and optical filtering performance is high, working stability, and the life-span is long, and transmissivity reaches more than 78.0%, in atom and the interactional experiment of light, has very important significance.
Description
[technical field]
The invention belongs to atom filter technology and laser technology field.More specifically, the present invention relates to one unimodal
87rb isotope atom filter, also relates to and uses described atomic light filter to carry out the method filtered.
[background technology]
Faraday anomalous dispersion atomic light filter has the advantage of high permeability, super-narrow line width, strong noise suppression, therefore occasion signal to noise ratio being had to rigors is usually used in, the aspects such as such as atmospheric laser communication, space communication, laser spectroscopy, laser technology, quantum information, metering, biology, medical science, infrastest.
In addition, atomic light filter can also be used in laser frequency stabilization aspect, makes laser have immunity to the fluctuation of electric current and temperature and change.By the enough Absorption Lines away from atom of the light energy output of these atomic light filters.
But, utilize in rubidium atom and the interactional experiment of light at great majority, usually it is desirable that energy and isotope
87the frequency stabilized carbon dioxide laser that Rb Atomic absorption spectrum accurately resonates.If utilize the rubidium of natural abundance, wherein isotope
85rb abundance but up to 72.2%, and
87rb only has 17.8%, is unfavorable for that very much laser is stablized.
CN102522687A discloses a kind of single transmission peaks atomic light filter and filtering method, and this atomic light filter comprises inert gas filled alkali metal (Rb) atom bubble, two polarizers, magnetic field sources and temperature control systems.This technology application Alkali Metal Rb atom, comprising isotope
87rb with
85rb, most scientific research is to liking isotope
87rb, isotope
87rb abundance in natural rubidium is 27.8%, and isotope
85rb abundance but up to 72.2%, the therefore isotope when utilizing atomic light filter
85rb can bring the impact that there is no need.
The technical problem underlying that existing single transmission peaks atomic light filter exists enough does not realize a transmission peaks to correspond to isotope completely
87the one list transmission peaks atomic light filter of Rb Atomic absorption spectrum is used for laser frequency stabilization.Except spectral line correspondence does not go up, kilogauss, temperature more than 150 DEG C on existing single transmission peaks atomic light filter magnetic field needed for core mode of operation, bring difficulty to application.
The present inventor takes some technical measures in order to address these problems, such as, use isotope
87rb up to more than 96% rubidium atom bubble, optical filtering passband with
87rb Atomic absorption spectrum is completely accurately corresponding, thus completes isotope of the present invention
87rb up to more than 96% rubidium atomic light filter, condition of work temperature is 50 ~ 95 DEG C simultaneously, temperature is lower, magnetic field intensity is 50 ~ 500 Gausses, also can be very low, therefore, it can be applied particularly to the frequency stabilized carbon dioxide laser of atomic resonance spectrum, and concrete laser frequency stabilization has peculiar advantage and application potential.
[summary of the invention]
[technical problem that will solve]
The object of this invention is to provide a kind of unimodal for laser frequency stabilization
87rb isotope atom filter.
Another object of the present invention is to provide and uses described unimodal for laser frequency stabilization
87rb isotope atom filter carries out the method filtered.
[technical scheme]
The present invention is achieved through the following technical solutions.
The present invention relates to a kind of unimodal for laser frequency stabilization
87rb isotope atom filter.
Unimodal
87rb isotope atom filter steeps the 6, second high reflective mirror 7, the 3rd semi-transparent semi-reflecting lens 8, first photodetector 9, oscilloscope 10, second photodetector 11, first Glan-Taylor prism 12, first permanent magnet 13, isotope by outside cavity gas laser 1, optical isolator 2, first semi-transparent semi-reflecting lens 3, second semi-transparent semi-reflecting lens 4, first high reflective mirror 5, natural rubidium
87rb bubble 14, permanent magnet temperature control system 15, second permanent magnet 16 and the second Glan-Taylor prism 17 form;
First Glan-Taylor prism 12 is parallel with the second Glan-Taylor prism 17 is placed in isotope
87the both sides of Rb bubble 14, the plane residing for them is vertical with optical propagation direction, and their polarization direction is orthogonal; First permanent magnet 13 and the second permanent magnet 16 are that a kind of laser can from its middle annular solid passed, and residing for two annular solids, plane is parallel to each other, and their center is all on laser beam propagation path; Between the first permanent magnet 13 and the second permanent magnet 16, isotope is set
87rb bubble 14, they are to isotope
87rb bubble 14 produces a uniform magnetic field; Permanent magnet temperature control system 15 controls isotope
87the temperature of Rb bubble 14;
The laser of outside cavity gas laser 1 is divided into two bundle laser by optical isolator 2 by the first semi-transparent semi-reflecting lens 3, and beam of laser is used as with reference to spectral line, and another beam of laser is used as the detection light of atomic light filter;
The laser beam be used as with reference to spectral line is divided into two bundle laser by the second semi-transparent semi-reflecting lens 4, by nature rubidium bubble 6 after beam of laser is reflected by the first high reflective mirror 5, arrival the 3rd semi-transparent semi-reflecting lens 8 is reflected again by the second high reflective mirror 7, another bundle laser straight is received and is reached the 3rd semi-transparent semi-reflecting lens 8, two and restraint laser and arrive the first photodetector 9 and oscilloscope 10 by the 3rd semi-transparent semi-reflecting lens 8;
Laser beam as the detection light of atomic light filter passes sequentially through the second Glan-Taylor prism 17, second permanent magnet 16, isotope
87rb steeps the 14, first permanent magnet 13 and the first Glan-Taylor prism 12 arrives the second photodetector 11 and oscilloscope 10.
A preferred embodiment of the invention, the permanent magnet helical coil of the first permanent magnet 13 and the second permanent magnet 16 replaces.
According to another kind of preferred implementation of the present invention, the magnetic field intensity of described permanent magnet or helical coil is 50 ~ 500 Gausses.
According to another kind of preferred implementation of the present invention, isotope
87the isotope of Rb bubble 14
87rb abundance is more than 96%.
According to another kind of preferred implementation of the present invention, the polarizer glass of described Glan-Taylor prism or quartz are made.
According to another kind of preferred implementation of the present invention, permanent magnet temperature control system 15 comprises isotope
87the heating part of Rb bubble 14, temperature measurement fraction and temperature control part.
According to another kind of preferred implementation of the present invention, described heating part is heater strip or heating chip; Described temperature measurement fraction is thermistor or thermal resistance; Described temperature control part is that one can according to isotope
87rb steeps the control appliance that 14 temperature detection signals and setting signal comparison result control heater strip or heating chip power.
According to another kind of preferred implementation of the present invention, isotope
87the temperature of Rb bubble 14 is 50 ~ 95 DEG C.
According to another kind of preferred implementation of the present invention, described atomic light filter also comprises a metal shell.
The invention still further relates to the method that described atomic light filter carries out filtering.
The method step is as follows:
A, regulate blue Taylor prism
The polarization direction of the first Glan-Taylor prism 12 and the second Glan-Taylor prism 17 is adjusted to orthogonal, utilizes these two Glan-Taylor prisms to select light to incident light;
B, adjustment isotope
87rb steeps 14 temperature
Setting isotope
87rb steeps 14 temperature, restarts permanent magnet temperature control system 15, utilizes this system to isotope
87rb bubble 14 is implemented heating, thermometric and temperature and is controlled, until isotope
87the temperature stabilization of Rb bubble 14 reaches at 50 ~ 95 DEG C;
C, select light
Utilize isotope
87the faraday anomalous dispersion effect of Rb ground state atom in magnetic field, by the uniform magnetic field produced by the first permanent magnet 13 and the second permanent magnet 16, allows isotope
87in Rb bubble 14
87rb atom and the laser interaction from the second Glan-Taylor prism 17, change the polarization direction of laser, utilize the first Glan-Taylor prism 12 and the second Glan-Taylor prism 17 to limit this laser-transmitting polarization direction simultaneously, thus select the light wave of characteristic frequency, reach filter action.
In more detail the present invention will be described below.
The present invention relates to a kind of unimodal for laser frequency stabilization
87rb isotope atom filter.
The present invention utilizes isotope
87the faraday anomalous dispersion effect of Rb ground state atom in magnetic field, produces uniform magnetic field by the magnetic field sources such as helical coil or permanent magnet, makes laser atom interaction, changes the polarization direction of laser.Utilize two pieces of devating prisms to limit laser-transmitting polarization direction, select characteristic frequency light wave, reach the object of optical filtering.
Instant invention overcomes isotope in nature rubidium atomic light filter
85the adverse effect that Rb ratio is brought up to 72.2%, design isotope
87rb up to more than 96% rubidium atomic light filter, transmissivity reaches 78.9%, its optical filtering passband with
87rb Atomic absorption spectrum is completely accurately corresponding, and this filter can work steadily in the long term, especially for research work to as if isotope
87the laser frequency stabilization of Rb has peculiar advantage.Secondly, the present invention is unimodal
87the condition of work temperature of Rb isotope atom filter is 50 ~ 95 DEG C, and its temperature is lower, and magnetic field intensity is 50 ~ 500 Gausses, also can be very low.Particularly, also can implement under the condition of temperature 50 C and the low like this requirement of magnetic field intensity 50 Gauss, therefore application easily.
Described is unimodal
87rb isotope atom filter steeps the 6, second high reflective mirror 7, the 3rd semi-transparent semi-reflecting lens 8, first photodetector 9, oscilloscope 10, second photodetector 11, first Glan-Taylor prism 12, first permanent magnet 13, isotope by outside cavity gas laser 1, optical isolator 2, first semi-transparent semi-reflecting lens 3, second semi-transparent semi-reflecting lens 4, first high reflective mirror 5, natural rubidium
87rb bubble 14, permanent magnet temperature control system 15, second permanent magnet 16 and the second Glan-Taylor prism 17 form, particularly can see accompanying drawing 1.
Outside cavity gas laser 1 is a kind of laser being made up of resonant cavity outside common laser diode end light feedback element and its end face, and it is the laser product sold in the market.
First permanent magnet 13, second permanent magnet 16 is normally used permanent magnets in the art, also can be helical coil, their effect is to produce uniform magnetic field, laser and rubidium atom is interacted, thus can change the polarization direction of laser.Annular permanent magnet or the plane residing for helical coil parallel to each other, be in phase co-altitude, center is all on propagation path of light, and they can allow laser pass from centre; Such can being similar to thinks that the magnetic field intensity between permanent magnet or helical coil is uniform, and magnetic direction is consistent with optical propagation direction, or perpendicular to optical propagation direction.
The magnetic field intensity that described permanent magnet or helical coil produce is preferably 240 ~ 250 Gausses.
Blue Taylor prism is a kind of birefringence polarizing device be made up of natural calcite crystal, and a branch of light beam without polarisation can be converted to a branch of polarised light, compared with other Polarizers, transmitance and the polarisation purity of blue Taylor prism are higher.The polarizer glass of described Glan-Taylor prism or quartz are made.
According to the present invention, the first Glan-Taylor prism 12 is parallel with the second Glan-Taylor prism 17 is placed in isotope
87the both sides of Rb bubble 14, the first Glan-Taylor prism 12 is between the second photodetector 11 and the first permanent magnet 13, and the second Glan-Taylor prism 17 is between the first semi-transparent semi-reflecting lens 3 and the second permanent magnet 16; Plane residing for two Glan-Taylor prisms is vertical with optical propagation direction, and their polarization direction is orthogonal.
Between the first permanent magnet 13 and the second permanent magnet 16, isotope is set
87rb bubble 14.Isotope
87rb bubble 14 is a kind of isotopes
87rb abundance is more than 96% and isotope
85rb abundance is less than 4%
87rb steeps, and two permanent magnets or helical coil form a uniform magnetic field, make laser and isotope
87in Rb bubble 14
87rb atom interacts, so change the polarization direction of laser.
Permanent magnet temperature control system 15 comprises isotope
87the heating part of Rb bubble 14, temperature measurement fraction and temperature control part.
Described heating part is heater strip or heating chip, and they are all normally used heating elements in the art.This heating part pair
87the two ends of Rb bubble 14 are heated, and waste heat passes through
87the mid portion of Rb bubble 14 scatters, and ensures do not have
87rb atoms condense arrives
87on the glass wall of Rb bubble 14.
Described temperature measurement fraction is thermistor or thermal resistance.Thermistor is made up of semiconductor ceramic material, and thermistor is the sensitiveest temperature sensor, and thermistor volume is very little, to the response of variations in temperature quickly.Thermal resistance is the most frequently used a kind of Temperature Detector in middle low-temperature space.Its main feature is that certainty of measurement is high, stable performance.Thermistor or thermal resistance are all the temperature-sensitive elements very generally used in the art.Described temperature measurement fraction is close to rubidium atom bubble and is carried out temperature survey, to guarantee accurate, timely measuring tempeature isotope
87the temperature of Rb bubble 14.
Described temperature control part is that one can according to isotope
87rb steeps the control appliance that 14 temperature detection signals and setting signal comparison result control heater strip or heating chip power, and the temperature control precision of this control appliance usually should lower than ± 0.1 DEG C, and the response time usually should lower than 1 second.The equipment that the temperature controlling instruments that the present invention uses such as is made up of temperature control circuit and heater strip and thermistor.
Permanent magnet temperature control system 15 controls isotope
87the temperature of Rb bubble 14, being mainly used in will when native system works
87rb steeps the temperature stabilization of steam at 50 ~ 95 DEG C.If permanent magnet temperature control system 15 can not by isotope
87the temperature of Rb bubble 14 controls in its temperature range, then transmissivity can be caused too low, do not reach the requirement needed for laser frequency stabilization.
The laser of outside cavity gas laser 1 is divided into two bundle laser by optical isolator 2 by the first semi-transparent semi-reflecting lens 3, and beam of laser is used as with reference to spectral line, and another beam of laser is used as the detection light of atomic light filter.
The laser beam be used as with reference to spectral line is divided into two bundle laser by the second semi-transparent semi-reflecting lens 4, by nature rubidium bubble 6 after beam of laser is reflected by the first high reflective mirror 5, arrival the 3rd semi-transparent semi-reflecting lens 8 is reflected again by the second high reflective mirror 7, another bundle laser straight is received and is reached the 3rd semi-transparent semi-reflecting lens 8, two and restraint laser and arrive the first photodetector 9 and oscilloscope 10 by the 3rd semi-transparent semi-reflecting lens 8.
The rubidium bubble of nature rubidium bubble 6 to be isotopic abundances of rubidium be natural abundance, i.e. isotope
87the abundance of Rb is 27.8%, isotope
85the abundance of Rb is the rubidium bubble of 72.2%.Nature rubidium bubble 6 only provides the saturated spectrum of laser to be used as spot frequency, and the saturated spectrum of laser of natural rubidium bubble 6 has 4 peaks, and peak, outer end two is
87the absworption peak of Rb, frequency interval is 6.835GHz, just spot frequency can measure the live width of atomic light filter transmission peaks from these two peak-to-peak frequency intervals.
Laser beam as the detection light of atomic light filter passes sequentially through the second Glan-Taylor prism 17, second permanent magnet 16, isotope
87rb steeps the 14, first permanent magnet 13 and the first Glan-Taylor prism 12 arrives the second photodetector 11 and oscilloscope 10.
As the isotope of atomic light filter
87isotope is filled with in Rb atom bubble 14
87rb up to more than 96% rubidium atom, isotope
87rb atomic light filter spectrum only have with
87the resonance list transmission peaks that Rb transition spectral line F=1 and F=2 is corresponding respectively.
In the present invention, described atomic light filter also comprises a metal shell.
In the present invention, the various device such as semi-transparent semi-reflecting lens, high reflective mirror, photodetector, oscilloscope is all product sold in the market.
The invention still further relates to the method that described atomic light filter carries out filtering.
The method step is as follows:
A, regulate blue Taylor prism
The polarization direction of the first Glan-Taylor prism 12 and the second Glan-Taylor prism 17 is adjusted to orthogonal, utilizes these two Glan-Taylor prisms to select light to incident light;
B, adjustment isotope
87rb steeps 14 temperature
Setting isotope
87rb steeps 14 temperature, restarts permanent magnet temperature control system 15, utilizes this system to isotope
87rb bubble 14 is implemented heating, thermometric and temperature and is controlled, until isotope
87the temperature stabilization of Rb bubble 14 reaches 50 ~ 95 DEG C;
C, select light
Utilize isotope
87the faraday anomalous dispersion effect of Rb ground state atom in magnetic field, by the uniform magnetic field produced by the first permanent magnet 13 and the second permanent magnet 16, allows isotope
87in Rb bubble 14
87rb atom and the laser interaction from the second Glan-Taylor prism 17, change the polarization direction of laser, utilize the first Glan-Taylor prism 12 and the second Glan-Taylor prism 17 to limit this laser-transmitting polarization direction simultaneously, thus select the light wave of characteristic frequency, reach filter action.
Blue Taylor prism, isotope
87rb bubble, permanent magnet etc. have been described above, do not repeat them here.
Unimodal for laser frequency stabilization of the present invention
87rb isotope filter, by utilizing
87the faraday anomalous dispersion effect of Rb ground state atom in magnetic field, changes Rb atom and laser interaction characteristic, achieves the unimodal atomic light filter composed with Atomic absorption and accurately resonate at certain temperature and magnetic field.Utilize temperature control system, right
87rb bubble carries out thermostatic control, improves the stability of a system; Add the design of shell, can mask outside electromagnetic interference, ensure that through light be desired signal, signal to noise ratio is higher.Accompanying drawing 2 is that the present invention is unimodal
87the implementation result schematic diagram of Rb isotope filter, wherein abscissa is corresponding measurement laser frequency, and ordinate is Transmission light percentage; The curve of top is 4 absorption spectras of the natural rubidium atom as reference, is filled with nature rubidium metal, wherein isotope in natural rubidium bubble 6
87rb27.8%, and isotope
85rb72.2%, only provides the saturated spectrum of laser to be used as spot frequency, and the saturated spectrum of laser of natural rubidium bubble 6 has 4 peaks, and peak, outer end two is
87the absworption peak of Rb, frequency interval is 6.835GHz, just spot frequency can measure the live width of atomic light filter transmission peaks from these two peak-to-peak frequency intervals.
And be used as the isotope of atomic light filter
87isotope is filled with in Rb atom bubble 14
87rb up to more than 96% rubidium atom, isotope
87rb atomic light filter spectrum only has the resonance list transmission peaks corresponding respectively with rubidium 87 transition spectral line F=1 and F=2, as shown in the black line below accompanying drawing 2.
[beneficial effect]
The invention has the beneficial effects as follows:
The first, provide one to be specifically designed to
87rb atomic spectra laser frequency stabilization unimodal
87rb isotope atom filter, its transmission passband with
87rb Atomic absorption spectrum is completely accurately corresponding, and current all existing atomic light filters are not all accomplished.
Secondly, condition of work temperature is between lower 50 ~ 95 DEG C, and magnetic field intensity can be very low, is in 50 ~ 500 gauss range.Particularly, only just passable at 50 DEG C and the low like this requirement condition of 50 Gausses, application realizes easily.
Present invention utilizes isotope
87the faraday anomalous dispersion effect of Rb ground state atom in magnetic field, produces uniform magnetic field by the magnetic field sources such as helical coil or permanent magnet, makes laser atom interaction, changes the polarization direction of laser.Utilize two pieces of devating prisms to limit laser-transmitting polarization direction, select characteristic frequency light wave, reach the object of optical filtering.During by a temperature control system to work
87rb atom vapor temperature controls, and makes system be in good working order always.Add the design of system shell, can mask outside electromagnetic interference, ensure that through light be desired signal light, signal to noise ratio is higher.Unimodal atomic light filter of the present invention, design principle is distinct, and structure is simple, and be easy to manufacture, optical filtering performance is high, working stability, and the life-span is long, and transmissivity reaches more than 78.0%.Obtained with
87the complete accurate corresponding unimodal transmitted spectrum of Rb Atomic absorption spectrum,
87in Rb isotope atom and the interactional experiment of light, there is important application meaning.
[accompanying drawing explanation]
Fig. 1 is unimodal for laser frequency stabilization of the present invention
87the structural representation of Rb isotope atom filter;
In figure: 1-outside cavity gas laser, 2-optical isolator, 3-first semi-transparent semi-reflecting lens, 4-second semi-transparent semi-reflecting lens, 5-first high reflective mirror, 6-nature rubidium bubble, 7-second high reflective mirror, 8-the 3rd semi-transparent semi-reflecting lens, 9-first photodetector, 10-oscilloscope, 11-second photodetector, 12-first Glan-Taylor prism, 13-first permanent magnet, 14-isotope
87rb bubble, 15-permanent magnet temperature control system, 16-second permanent magnet, 17-second Glan-Taylor prism.
Fig. 2 is unimodal for laser frequency stabilization of the present invention
87rb isotope atom filter effect schematic diagram.
[embodiment]
The present invention can be understood better by following embodiment.
Embodiment 1: unimodal for laser frequency stabilization of the present invention
87rb isotope atom filter
Described unimodal
87rb isotope atom filter steeps the 6, second high reflective mirror 7, the 3rd semi-transparent semi-reflecting lens 8, first photodetector 9, oscilloscope 10, second photodetector 11, first Glan-Taylor prism 12, first permanent magnet 13, isotope by outside cavity gas laser 1, optical isolator 2, first semi-transparent semi-reflecting lens 3, second semi-transparent semi-reflecting lens 4, first high reflective mirror 5, natural rubidium
87rb bubble 14, permanent magnet temperature control system 15, second permanent magnet 16 and the second Glan-Taylor prism 17 form;
First Glan-Taylor prism 12 is parallel with the second Glan-Taylor prism 17 is placed in isotope
87the both sides of Rb bubble 14, the plane residing for them is vertical with optical propagation direction, and their polarization direction is orthogonal, and the polarizer glass of described Glan-Taylor prism is made; First permanent magnet 13 and the second permanent magnet 16 are that a kind of laser can from its middle annular solid passed, and residing for two annular solids, plane is parallel to each other, and their center is all on laser beam propagation path; Between the first permanent magnet 13 and the second permanent magnet 16, isotope is set
87rb abundance is the isotope of more than 96%
87rb bubble 14, they are to the isotope of temperature 65 DEG C
87rb bubble 14 produces the uniform magnetic field of magnetic field intensity 240 Gauss; Isotope
87the temperature of Rb bubble 14 is controlled by permanent magnet temperature control system 15; Permanent magnet temperature control system 15 comprises isotope
87the heater strip heating part of Rb bubble 14, thermistor temperature detecting part and temperature control part.
The laser of outside cavity gas laser 1 is divided into two bundle laser by optical isolator 2 by the first semi-transparent semi-reflecting lens 3, and beam of laser is used as with reference to spectral line, and another beam of laser is used as the detection light of atomic light filter;
The laser beam be used as with reference to spectral line is divided into two bundle laser by the second semi-transparent semi-reflecting lens 4, by nature rubidium bubble 6 after beam of laser is reflected by the first high reflective mirror 5, arrival the 3rd semi-transparent semi-reflecting lens 8 is reflected again by the second high reflective mirror 7, another bundle laser straight is received and is reached the 3rd semi-transparent semi-reflecting lens 8, two and restraint laser and arrive the first photodetector 9 and oscilloscope 10 by the 3rd semi-transparent semi-reflecting lens 8;
Laser beam as the detection light of atomic light filter passes sequentially through the second Glan-Taylor prism 17, second permanent magnet 16, isotope
87rb steeps the 14, first permanent magnet 13 and the first Glan-Taylor prism 12 arrives the second photodetector 11 and oscilloscope 10.The present embodiment unimodal
87rb isotope atom transmissive filter reaches 78.9%.
Embodiment 2: unimodal for laser frequency stabilization of the present invention
87rb isotope atom filter
Described unimodal
87rb isotope atom filter steeps the 6, second high reflective mirror 7, the 3rd semi-transparent semi-reflecting lens 8, first photodetector 9, oscilloscope 10, second photodetector 11, first Glan-Taylor prism 12, first helical coil 13, isotope by outside cavity gas laser 1, optical isolator 2, first semi-transparent semi-reflecting lens 3, second semi-transparent semi-reflecting lens 4, first high reflective mirror 5, natural rubidium
87rb bubble 14, helical coil temperature control system 15, second helical coil 16 and the second Glan-Taylor prism 17 form;
First Glan-Taylor prism 12 is parallel with the second Glan-Taylor prism 17 is placed in isotope
87the both sides of Rb bubble 14, the plane residing for them is vertical with optical propagation direction, and their polarization direction is orthogonal, and the polarizer glass of described Glan-Taylor prism or quartz are made; Residing for first helical coil 13 and the second helical coil 16, plane is parallel to each other, and their center is all on laser beam propagation path; Between the first helical coil 13 and the second helical coil 16, isotope is set
87rb abundance is the isotope of more than 96%
87rb bubble 14, they are to the isotope of temperature 75 DEG C
87rb bubble 14 produces the uniform magnetic field of magnetic field intensity 250 Gauss; Helical coil temperature control system 15 controls isotope
87the temperature of Rb bubble 14; Helical coil temperature control system 15 comprises isotope
87the heating chip heating part of Rb bubble 14, Thermistor Temperature Measurement part and temperature control part.
The laser of outside cavity gas laser 1 is divided into two bundle laser by optical isolator 2 by the first semi-transparent semi-reflecting lens 3, and beam of laser is used as with reference to spectral line, and another beam of laser is used as the detection light of atomic light filter;
The laser beam be used as with reference to spectral line is divided into two bundle laser by the second semi-transparent semi-reflecting lens 4, by nature rubidium bubble 6 after beam of laser is reflected by the first high reflective mirror 5, arrival the 3rd semi-transparent semi-reflecting lens 8 is reflected again by the second high reflective mirror 7, another bundle laser straight is received and is reached the 3rd semi-transparent semi-reflecting lens 8, two and restraint laser and arrive the first photodetector 9 and oscilloscope 10 by the 3rd semi-transparent semi-reflecting lens 8;
Laser beam as the detection light of atomic light filter passes sequentially through the second Glan-Taylor prism 17, second helical coil 16, isotope
87rb steeps the 14, first helical coil 13 and the first Glan-Taylor prism 12 arrives the second photodetector 11 and oscilloscope 10.The present embodiment unimodal
87rb isotope atom transmissive filter reaches 79.9%.
In above-described embodiment, adopt isotope
87rb up to more than 96%, during specifically for laser frequency stabilization, if make isotope
87the content total in steam chest of Rb accounts for more than 65% and just can reach good effect.Therefore, it is last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention but not to be limited, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: still can modify to technical scheme of the present invention or equivalent replacement, and these are revised or be equal to the spirit and scope that replacement also can not make amended technical scheme disengaging technical solution of the present invention.
Claims (10)
1. unimodal for laser frequency stabilization
87rb isotope atom filter, is characterized in that it steeps (6), the second high reflective mirror (7), the 3rd semi-transparent semi-reflecting lens (8), the first photodetector (9), oscilloscope (10), the second photodetector (11), the first Glan-Taylor prism (12), the first permanent magnet (13), isotope by outside cavity gas laser (1), optical isolator (2), the first semi-transparent semi-reflecting lens (3), the second semi-transparent semi-reflecting lens (4), the first high reflective mirror (5), natural rubidium
87rb steeps (14), permanent magnet temperature control system (15), the second permanent magnet (16) forms with the second Glan-Taylor prism (17);
First Glan-Taylor prism (12) is parallel with the second Glan-Taylor prism (17) is placed in isotope
87the both sides of Rb bubble (14), the plane residing for them is vertical with optical propagation direction, and their polarization direction is orthogonal; First permanent magnet (13) and the second permanent magnet (16) are that a kind of laser can from its middle annular solid passed, and residing for two annular solids, plane is parallel to each other, and their center is all on laser beam propagation path; Between the first permanent magnet (13) and the second permanent magnet (16), isotope is set
87rb steeps (14), and they are to isotope
87rb bubble (14) produces a uniform magnetic field; Permanent magnet temperature control system (15) controls isotope
87the temperature of Rb bubble (14);
The laser of outside cavity gas laser (1) is divided into two bundle laser by optical isolator (2) by the first semi-transparent semi-reflecting lens (3), and beam of laser is used as with reference to spectral line, and another beam of laser is used as the detection light of atomic light filter;
The laser beam be used as with reference to spectral line is divided into two bundle laser by the second semi-transparent semi-reflecting lens (4), beam of laser is steeped (6) by after the first high reflective mirror (5) reflection by nature rubidium, again by the second high reflective mirror (7) reflection arrival the 3rd semi-transparent semi-reflecting lens (8), another bundle laser straight is received and is reached the 3rd semi-transparent semi-reflecting lens (8), and two bundle laser arrive the first photodetector (9) and oscilloscope (10) by the 3rd semi-transparent semi-reflecting lens (8);
Laser beam as the detection light of atomic light filter passes sequentially through the second Glan-Taylor prism (17), the second permanent magnet (16), isotope
87rb bubble (14), the first permanent magnet (13) and the first Glan-Taylor prism (12) arrive the second photodetector (11) and oscilloscope (10).
2. atomic light filter according to claim 1, is characterized in that the first permanent magnet (13) replaces with the permanent magnet helical coil of the second permanent magnet (16).
3. atomic light filter according to claim 1, is characterized in that the first permanent magnet (13) is 50 ~ 500 Gausses with the magnetic field intensity of the permanent magnet of the second permanent magnet (16).
4. atomic light filter according to claim 2, is characterized in that the magnetic field intensity of helical coil is 50 ~ 500 Gausses.
5. atomic light filter according to claim 1, is characterized in that isotope
87the isotope of Rb bubble (14)
87rb abundance ratio isotope
85rb is high.
6. atomic light filter according to claim 1, is characterized in that isotope
87the isotope of Rb bubble (14)
87the abundance of Rb is more than 96%.
7. atomic light filter according to claim 1, is characterized in that permanent magnet temperature control system (15) comprises isotope
87the Rb bubble heating part of (14), temperature measurement fraction and temperature control part.
8. atomic light filter according to claim 7, is characterized in that described heating part is heater strip or heating chip; Described temperature measurement fraction is thermistor or thermal resistance; Described temperature control part is that one can according to isotope
87rb bubble (14) temperature detection signal and setting signal comparison result control the control appliance of heater strip or heating chip power.
9. atomic light filter according to claim 1, is characterized in that isotope
87the temperature of Rb bubble (14) is 50 ~ 95 DEG C.
10. use atomic light filter described in claim 1 to carry out the method filtered, it is characterized in that the method step is as follows:
A, regulate blue Taylor prism
First Glan-Taylor prism (12) and the polarization direction of the second Glan-Taylor prism (17) are adjusted to orthogonal, utilize these two Glan-Taylor prisms to select light to incident light;
B, adjustment isotope
87rb steeps (14) temperature
Setting isotope
87rb steeps (14) temperature, restarts permanent magnet temperature control system (15), utilizes this system to isotope
87rb bubble (14) implements heating, thermometric and temperature and controls, until isotope
87the temperature stabilization of Rb bubble (14) reaches 50 ~ 95 DEG C;
C, select light
Utilize isotope
87the faraday anomalous dispersion effect of Rb ground state atom in magnetic field, by magnetic field intensity 50 ~ 500 Gauss uniform magnetic field produced by the first permanent magnet (13) and the second permanent magnet (16), allows isotope
87in Rb bubble (14)
87rb atom and the laser interaction from the second Glan-Taylor prism (17), change the polarization direction of laser, utilize the first Glan-Taylor prism (12) and the second Glan-Taylor prism (17) to limit this laser-transmitting polarization direction simultaneously, thus select the light wave of characteristic frequency, reach filter action.
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| CN103972781B (en) * | 2014-05-22 | 2016-11-23 | 北京大学 | A kind of novel faraday anomalous dispersion atomic light filter structure of Highgrade integration |
| CN104570408A (en) * | 2015-01-26 | 2015-04-29 | 浙江大学城市学院 | Ultraviolet atomic light filter and method for implementing same |
| CN104701727B (en) * | 2015-03-02 | 2018-01-09 | 北京大学 | A kind of laser frequency stabiliz ation method and device |
| CN106444097A (en) * | 2016-11-16 | 2017-02-22 | 浙江大学城市学院 | Ultra-narrow line width atom light filter based on Rb atom 420nm transition |
| CN106842759B (en) * | 2017-02-23 | 2019-07-09 | 中国人民解放军国防科学技术大学 | The high-precision light power stabilising device and its application method Light polarizing for rubidium atom |
| CN109193333B (en) * | 2018-11-02 | 2020-03-24 | 北京航天控制仪器研究所 | Atomic dichroism laser frequency stabilization integration method |
| CN111562237A (en) * | 2020-05-26 | 2020-08-21 | 中国科学院合肥物质科学研究院 | CO based on double-beam cavity enhanced spectroscopy technology2、N2O stable isotope simultaneous detection device and method |
| CN111856793B (en) * | 2020-07-10 | 2022-09-27 | 中国科学院精密测量科学与技术创新研究院 | Plug-in type acousto-optic frequency shift device |
| CN112018590B (en) * | 2020-09-07 | 2021-11-02 | 北京大学 | Multi-wavelength non-atomic resonance Faraday semiconductor laser |
| CN113054526A (en) * | 2021-03-11 | 2021-06-29 | 浙大城市学院 | Buffer gas sideband suppression single-peak atom optical filter |
| CN114498296B (en) * | 2022-01-13 | 2024-02-02 | 浙江法拉第激光科技有限公司 | 852nm wavelength high-power Faraday laser and implementation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301972A (en) * | 1999-12-30 | 2001-07-04 | 中国科学院武汉物理与数学研究所 | Active rubidium atom resonance light filter |
| CN101794033A (en) * | 2009-12-31 | 2010-08-04 | 中国科学院武汉物理与数学研究所 | Method and device for strengthening atom steam optical filtering signals by combined Raman |
| CN102522687A (en) * | 2011-12-15 | 2012-06-27 | 北京大学 | Single-transmission peak atom light filter and light filtering method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5353102B2 (en) * | 2008-07-30 | 2013-11-27 | 東洋インキＳｃホールディングス株式会社 | Liquid crystal display |
-
2014
- 2014-01-06 CN CN201410004968.1A patent/CN103701030B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301972A (en) * | 1999-12-30 | 2001-07-04 | 中国科学院武汉物理与数学研究所 | Active rubidium atom resonance light filter |
| CN101794033A (en) * | 2009-12-31 | 2010-08-04 | 中国科学院武汉物理与数学研究所 | Method and device for strengthening atom steam optical filtering signals by combined Raman |
| CN102522687A (en) * | 2011-12-15 | 2012-06-27 | 北京大学 | Single-transmission peak atom light filter and light filtering method |
Non-Patent Citations (2)
| Title |
|---|
| Electrodeless-discharge-vapor-lamp-based Faraday anomalous-dispersion optical filter;Qingqing Sun et al.;《Optics Letters》;20111201;第36卷(第23期);4611-4613 * |
| Faraday反常色散滤光器;郭宏 等;《科学通报》;20100305;第55卷(第7期);527-533 * |
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