CN109470359B - Rubidium spectrum lamp device providing differential optical output and method for optical noise differential suppression - Google Patents
Rubidium spectrum lamp device providing differential optical output and method for optical noise differential suppression Download PDFInfo
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- CN109470359B CN109470359B CN201811333340.0A CN201811333340A CN109470359B CN 109470359 B CN109470359 B CN 109470359B CN 201811333340 A CN201811333340 A CN 201811333340A CN 109470359 B CN109470359 B CN 109470359B
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- 229910052701 rubidium Inorganic materials 0.000 title claims abstract description 122
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 title claims abstract description 122
- 238000001228 spectrum Methods 0.000 title claims abstract description 100
- 230000003287 optical effect Effects 0.000 title claims abstract description 68
- 230000001629 suppression Effects 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 8
- 230000010355 oscillation Effects 0.000 claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 229910052755 nonmetal Inorganic materials 0.000 claims description 30
- 238000004321 preservation Methods 0.000 claims description 21
- 230000003595 spectral effect Effects 0.000 claims description 18
- 238000009413 insulation Methods 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- IGLNJRXAVVLDKE-NJFSPNSNSA-N Rubidium-87 Chemical compound [87Rb] IGLNJRXAVVLDKE-NJFSPNSNSA-N 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 229910052743 krypton Inorganic materials 0.000 description 2
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/10—Arrangements of light sources specially adapted for spectrometry or colorimetry
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
The invention discloses a rubidium spectrum lamp device with differential optical output and a method for optical noise differential suppression, wherein the device comprises a rubidium spectrum lamp bulb, an oscillating coil, a radio frequency oscillating circuit board and a heating device; the rubidium spectrum lamp bulb outputs two paths of completely symmetrical optical signals, a tail pipe is arranged in the middle of the side wall of the rubidium spectrum lamp bulb, and two groups of oscillating coils are symmetrically wound on the side wall of the rubidium spectrum lamp bulb through the middle of the rubidium spectrum lamp bulb; the two groups of oscillation coils are respectively and electrically connected with the radio frequency oscillation circuit board; the heating device is arranged at the periphery of the rubidium spectrum lamp bulb and the oscillating coil to heat the rubidium spectrum lamp bulb. The invention utilizes a rubidium spectrum bulb to realize two-path optical signal output, the output optical signals are completely separated in space, and can be conveniently and respectively detected; two paths of optical signals are emitted from the same rubidium spectrum bulb, the optical signals have perfect symmetry, and differential suppression on optical noise is facilitated.
Description
Technical Field
The invention belongs to the technical field of differential optical detection, and particularly relates to a rubidium spectrum lamp device capable of providing differential optical output and a method for inhibiting optical noise difference, which are suitable for atomic sensors such as atomic frequency standards, atomic magnetometers and the like of differential optical detection.
Background
With the development of science and technology, high-precision atomic sensors such as atomic frequency standards, magnetometers and the like are widely applied to the fields of global satellite navigation positioning systems, future 5G communication, resource detection, electric power and the like. In an atomic sensor, the interaction between light and atoms is generally adopted to improve the atom utilization rate, so that the aim of improving the sensor precision is fulfilled; but at the same time, the optical signal noise is also superposed into the detection signal to be output, and the improvement of the signal-to-noise ratio of the system is limited. Taking rubidium atomic frequency standard as an example, pumping light emitted by the spectrum lamp overturns the number of ground state atoms of rubidium atoms, so that the signal intensity is improved by several orders of magnitude, but meanwhile, optical noise generated by the spectrum lamp is also superposed on an output signal, and further improvement of the system precision is limited.
Therefore, the suppression of optical noise is a technical problem to be solved at present, but the suppression of optical noise in the prior art still does not achieve a good effect, and further improvement of system precision is limited.
Disclosure of Invention
In order to solve the above-mentioned problems of the prior art, an object of the present invention is to provide a rubidium spectral lamp device with a differential optical output and a method for suppressing an optical noise differential.
The invention can generate two paths of completely symmetrical differential optical signals, wherein one path of optical signal interacts with atoms to extract information of the atomic sensor, and then the two paths of optical signals are subjected to differential subtraction to realize the inhibition of optical noise, improve the signal-to-noise ratio of the system and achieve the purpose of improving the precision of the atomic sensor.
The technical scheme adopted by the invention is as follows:
the rubidium spectrum lamp device for providing differential optical output comprises a rubidium spectrum lamp bulb, an oscillation coil, a radio frequency oscillation circuit board and a heating device;
the rubidium spectrum lamp bulb outputs two paths of completely symmetrical optical signals, and two groups of oscillating coils are symmetrically wound on the side wall of the rubidium spectrum lamp bulb by the middle of the rubidium spectrum lamp bulb;
the two groups of oscillation coils are respectively and electrically connected with the radio frequency oscillation circuit board;
the heating device is arranged at the periphery of the rubidium spectrum lamp bulb and the oscillating coil to heat the rubidium spectrum lamp bulb.
The invention utilizes a rubidium spectrum bulb to realize two-path optical signal output, the output optical signals are completely separated in space, and can be conveniently and respectively detected; two paths of optical signals are emitted from the same rubidium spectrum bulb, the optical signals have perfect symmetry, and differential suppression on optical noise is facilitated.
In order to ensure that two paths of completely symmetrical optical signals are output, a tail pipe is arranged in the middle of the side wall of the rubidium spectrum lamp bulb, the central axis of the tail pipe is perpendicular to the central axis of the rubidium spectrum lamp bulb, and the two groups of oscillating coils are symmetrically arranged with the central axis of the tail pipe.
And in order to further ensure that two paths of completely symmetrical optical signals are output, the number of turns of the two groups of oscillating coils of the two paths of completely symmetrical optical signals is the same. The oscillation coil 7 is a high-frequency oscillation coil.
Preferably, the rubidium spectrum lamp bulb is filled with a glow-starting gas and rubidium 87 metal. The starting gas is xenon, krypton, etc. Rubidium spectrum lamp bulb is made of alkali-resistant glass.
The rubidium 87 metal atoms emit light under the excitation of the starting gas and the radio frequency signals fed in through the oscillating coil, and a light source is provided for the rubidium atom frequency standard.
And an oscillating coil wound on the side wall of the rubidium spectrum lamp bulb feeds a radio frequency signal generated by the radio frequency oscillating circuit board into the rubidium spectrum lamp bulb to excite the rubidium spectrum lamp bulb to emit light.
Preferably, the rubidium spectrum lamp device further comprises a non-metal heat preservation cover, the non-metal heat preservation cover surrounds the rubidium spectrum lamp bulb and the oscillating coil, first light outlet holes which are completely symmetrical and equal in size are formed at two ends, which face the rubidium spectrum lamp bulb, and the heating device is arranged on the periphery of the non-metal heat preservation cover.
Preferably, the gap point between the non-metallic heat-preserving cover and the rubidium spectrum lamp bulb is silicon-filled.
The point silicon filling enables the temperature of the rubidium spectrum lamp to be uniform, meanwhile, local overheating is avoided, the stability of the temperature of the rubidium spectrum lamp is improved, and the rubidium spectrum lamp can be fixed.
Preferably, the rubidium spectrum lamp device further comprises a shielding box, the shielding box wraps the periphery of the nonmetal heat preservation cover, the shielding box is provided with a second light outlet hole corresponding to the size and the position of the first light outlet hole of the nonmetal heat preservation cover, and the heating device is arranged on the periphery of the shielding box.
Because the rubidium spectrum lamp bulb is only difficult to be heated to more than 110 ℃ by a heating device outside the shielding box, heat flow is uniformly guided into the non-metal heat-preservation cover through the shielding box, the temperature of the non-metal heat-preservation cover is about 80 ℃, the oscillating coil simultaneously heats the rubidium spectrum lamp bulb, the temperature of the rubidium spectrum lamp bulb under the vacuum condition can be effectively guaranteed to be more than 110 ℃, and the temperature required by debugging is achieved by adjusting the heating power of the oscillating coil.
Further, in order to ensure that two paths of completely symmetrical optical signals are output, the central axes of the nonmetal heat preservation cover and the shielding box are superposed with the central axis of the rubidium spectrum lamp bulb.
Preferably, the rubidium spectrum lamp device further comprises a radio frequency oscillation circuit box, the radio frequency oscillation circuit board is fixed in the radio frequency oscillation circuit box, and a nonmetal heat insulation layer is arranged between one side of the radio frequency oscillation circuit board, which is close to the rubidium spectrum lamp bulb, and the rubidium spectrum lamp bulb.
Since the temperature of the rubidium spectrum lamp bulb should be above 110 ℃, the lower the temperature of the radio frequency oscillation circuit, the better. The reliability of electronic components on the radio frequency oscillation circuit is higher as the temperature is lower, and therefore the radio frequency oscillation circuit board and the rubidium spectrum lamp bulb are isolated by the nonmetal thermal insulation layer, so that the temperature of the radio frequency oscillation circuit under vacuum is lower than that of the rubidium spectrum lamp bulb by more than 40 ℃.
The nonmetal thermal insulation layer isolates the temperature influence of the rubidium spectrum lamp bulb on the radio frequency oscillation circuit, and the operation reliability of the radio frequency oscillation circuit is ensured.
The radio frequency oscillating circuit on the radio frequency oscillating circuit board generates a radio frequency signal for exciting rubidium spectrum lamp bulb to emit light, preferably, the frequency of the radio frequency signal is in a range of 70 MHz-150 MHz, and the power is about 1.5M.
Preferably, the rubidium spectrum lamp device further comprises a thermistor and a temperature control circuit, and the temperature control circuit is electrically connected with the thermistor and the heating device respectively. And temperature debugging is carried out through a temperature control circuit.
A method for carrying out optical noise differential suppression by utilizing a rubidium spectral lamp device comprises the steps of enabling one path of optical signals of two paths of completely symmetrical optical signals output by the rubidium spectral lamp device to interact with atoms, extracting information of an atom sensor, and carrying out differential subtraction on the extracted information and the other path of optical signals to achieve suppression of optical noise.
The invention has the beneficial effects that:
the invention utilizes a rubidium spectrum bulb to realize two-path optical signal output, the output optical signals are completely separated in space, and can be conveniently and respectively detected; two paths of optical signals are emitted from the same rubidium spectrum bulb, the optical signals have perfect symmetry, and differential suppression on optical noise is facilitated.
Drawings
Fig. 1 is a schematic cross-sectional structure of an embodiment of the present invention.
In the figure: 1-a radio frequency oscillation circuit box; 2-a radio frequency oscillating circuit board; 3-a non-metal heat preservation cover; 4-rubidium spectral lamp bulb; 5-an oscillating coil; 6-shielding box.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
Example 1:
in order to reduce the influence of pumping light noise interacting with atoms in the atomic sensor on the signal-to-noise ratio of the system, as shown in fig. 1, the rubidium spectrum lamp device for providing differential light output according to the embodiment can achieve two completely symmetrical optical signal outputs through one spectrum lamp, and mainly includes thermal design and structural design.
A rubidium spectrum lamp device for providing differential light output comprises a rubidium spectrum lamp bulb 4, an oscillating coil 5, a shielding box 6, a radio frequency oscillating circuit box 1, a radio frequency oscillating circuit board 2 and a non-metal heat preservation cover 3.
Rubidium spectrum lamp bulb 4 is made of alkali-resistant glass, a starting gas and alkali metals such as rubidium and cesium are filled in the rubidium spectrum lamp bulb 4, the starting gas is xenon and krypton, the rubidium metal is rubidium 87 metal, a tail pipe is arranged in the middle of the side wall of the rubidium spectrum lamp bulb 4, the central axis of the tail pipe is perpendicular to the central axis of the rubidium spectrum lamp bulb 4, and two groups of oscillating coils 5 are arranged and symmetrically wound on the side wall of the rubidium spectrum lamp bulb 4 through the central axes of the tail pipes.
The two groups of oscillating coils 7 have the same number of turns, and the oscillating coils 7 are high-frequency oscillating coils.
Rubidium 87 metal atoms emit light under the excitation of a glow starting gas and a radio frequency signal fed in through the oscillating coil 5, so that a light source is provided for a rubidium atom frequency standard, the temperature of a rubidium spectrum lamp bulb is required to be stabilized above 110 ℃ during implementation, the specific value is required to be debugged due to different rubidium atom frequency standard trimming machines with different corresponding values, and the rubidium atom frequency standard performance is influenced by too high or too low values.
The rf oscillating circuit on the rf oscillating circuit board 2 generates an rf signal for exciting the rubidium spectrum lamp bulb 4 to emit light, preferably, the frequency of the rf signal is in a range of 70MHz to 150MHz, and the power is about 1.5M. An oscillating coil 5 wound on the side wall of rubidium spectrum lamp bulb 4 feeds a radio frequency signal generated by radio frequency oscillating circuit board 2 into rubidium spectrum lamp bulb 4, and excites rubidium spectrum lamp bulb 4 to emit light.
Nonmetal heat preservation cover 3 surrounds rubidium spectrum lamp bulb 4 and oscillating coil 5 and is just being equipped with the first light outlet aperture that the rubidium spectrum lamp bulb 4 both ends are completely symmetrical and size is equal, and the clearance point silicon is filled between nonmetal heat preservation cover 3 and rubidium spectrum lamp bulb 4 to make rubidium spectrum lamp bulb temperature even, guarantee not local overheat simultaneously, improve the stability of rubidium spectrum lamp bulb 4 temperature, can fix rubidium spectrum lamp bulb 4.
The non-metal heat preservation cover 3 is made of glass laminated cloth plates, polyimide, polystyrene and the like.
The shielding box 6 wraps the periphery of the nonmetal heat-insulating cover 3, the nonmetal heat-insulating cover 3 is closely matched in the shielding box 6, and the shielding box 6 is provided with a second light-emitting hole corresponding to the size and the position of the first light-emitting hole of the nonmetal heat-insulating cover 3.
The shield case 6 is made of a metal material such as aluminum or copper.
Furthermore, the central axes of the non-metallic heat-preserving cover 3 and the shielding box 6 coincide with the central axis of the rubidium spectral lamp bulb 4.
The periphery of the shielding box 6 is provided with a heating device, the rubidium spectrum lamp bulb 4 is provided with a thermistor, the heating device is connected with a high-precision temperature control circuit, and temperature signals are fed back to the temperature control circuit through the thermistor to achieve temperature debugging.
The heating device is an electric heating pipe or an electric heating wire, and is wound on the shielding box 6 or attached to the shielding box 6 for heating.
Radio frequency oscillation circuit board 2 is fixed in radio frequency oscillation circuit box 1, radio frequency oscillation circuit box 1 is fixed outside shielding box 2, in this embodiment, radio frequency oscillation circuit box 1 is fixed at shielding box 2 top, be equipped with non-metallic insulation layer between one side that radio frequency oscillation circuit board 2 is close to shielding box 2 and shielding box 6, this non-metallic insulation layer is the heat insulating mattress, in this embodiment, non-metallic insulation layer locates between one side that radio frequency oscillation circuit board 2 is close to shielding box 2 and the lateral wall of radio frequency oscillation circuit box 1, of course also can locate between the lateral wall of radio frequency oscillation circuit box 1 and the lateral wall of shielding box 6.
The nonmetal thermal insulation layer isolates the temperature influence of the rubidium spectrum lamp bulb 4 on the radio frequency oscillation circuit, and the operation reliability of the radio frequency oscillation circuit is ensured.
Since the temperature of rubidium spectral lamp bulb 4 should be above 110 ℃, the lower the temperature of the rf oscillator circuit, the better. The reliability of electronic components on the radio frequency oscillation circuit is higher as the temperature is lower, so that the radio frequency oscillation circuit board 2 and the shielding box 6 are isolated by adopting the nonmetal heat-insulating layer, and the temperature of the radio frequency oscillation circuit under vacuum is lower than that of the rubidium spectrum lamp bulb 4 by more than 40 ℃.
Because rubidium spectrum lamp bulb 4 is only difficult to be added to more than 110 ℃ by a heating device outside the shielding box 6, heat flow is uniformly conducted into the non-metal heat-preservation cover 3 through the shielding box 6, the temperature of the non-metal heat-preservation cover 3 is about 80 ℃, and the oscillating coil 5 simultaneously heats the rubidium spectrum lamp bulb 4, the temperature of the rubidium spectrum lamp bulb 4 under the vacuum condition can be effectively guaranteed to be more than 110 ℃, namely the heating power of the oscillating coil 5 is adjusted to enable the temperature to reach the debugging requirement.
Example 2:
a method for performing optical noise differential suppression using a rubidium spectral lamp device, comprising: one path of optical signals of two paths of completely symmetrical optical signals output by the rubidium spectrum lamp device interacts with atoms, information of an atom sensor is extracted, and difference subtraction is carried out on the other path of optical signals, so that suppression of optical noise is achieved.
The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.
Claims (10)
1. A rubidium spectral lamp device providing a differential optical output, characterized by: the rubidium spectrum lamp comprises a rubidium spectrum lamp bulb (4), an oscillating coil (5), a radio frequency oscillating circuit board (2) and a heating device;
the rubidium spectrum lamp bulb outputs two paths of completely symmetrical optical signals, and two groups of oscillating coils are symmetrically wound on the side wall of the rubidium spectrum lamp bulb by the middle of the rubidium spectrum lamp bulb;
the two groups of oscillation coils are respectively and electrically connected with the radio frequency oscillation circuit board;
the heating device is arranged at the periphery of the rubidium spectrum lamp bulb and the oscillating coil to heat the rubidium spectrum lamp bulb.
2. A rubidium spectral lamp apparatus providing a differential optical output as recited in claim 1, wherein: a tail pipe is arranged in the middle of the side wall of the rubidium spectrum lamp bulb, the central axis of the tail pipe is perpendicular to that of the rubidium spectrum lamp bulb, and the two groups of oscillating coils are symmetrically arranged with the central axis of the tail pipe.
3. A rubidium spectral lamp apparatus providing a differential optical output as recited in claim 1, wherein: the two groups of oscillating coils have the same number of turns.
4. A rubidium spectral lamp apparatus providing a differential optical output as recited in claim 1, wherein: the rubidium spectrum lamp bulb is internally filled with a starting gas and rubidium 87 metal.
5. The rubidium spectral lamp apparatus providing a differential optical output according to any of claims 1-4, wherein: rubidium spectrum lamp device still includes nonmetal heat preservation cover (3) and shielding box (6), and nonmetal heat preservation cover surrounds rubidium spectrum lamp bulb and oscillating coil and just is being equipped with the first light outlet that the perfect symmetry just equals in the both ends of rubidium spectrum lamp bulb, and shielding box parcel is in nonmetal heat preservation cover's periphery, and shielding box is equipped with the second light outlet that corresponds with nonmetal heat preservation cover's first light outlet size and position, and heating device locates shielding box periphery.
6. A rubidium spectral lamp apparatus providing a differential optical output as recited in claim 5, wherein: and a gap point between the non-metal heat-preservation cover and the rubidium spectrum lamp bulb is filled with silicon.
7. A rubidium spectral lamp apparatus providing a differential optical output as recited in claim 5, wherein: the central axes of the nonmetal heat preservation cover and the shielding box are superposed with the central axis of the rubidium spectrum lamp bulb.
8. The rubidium spectral lamp apparatus providing a differential optical output according to any of claims 1-4, wherein: the rubidium spectrum lamp device further comprises a radio frequency oscillation circuit box (1), the radio frequency oscillation circuit board is fixed in the radio frequency oscillation circuit box, and a nonmetal heat insulation layer is arranged between one side, close to the rubidium spectrum lamp bulb, of the radio frequency oscillation circuit board and the rubidium spectrum lamp bulb.
9. A rubidium spectral lamp apparatus providing a differential optical output as recited in claim 1, wherein: the rubidium spectrum lamp device further comprises a thermistor and a temperature control circuit, and the temperature control circuit is electrically connected with the thermistor and the heating device respectively.
10. A method for suppressing an optical noise difference by using a rubidium spectral lamp device is characterized by comprising the following steps: comprising interacting one optical signal of two substantially symmetrical optical signals output by a rubidium spectral lamp device according to any one of claims 1-9 with atoms, extracting information from the atomic sensor, and performing a differential subtraction with the other optical signal to achieve suppression of optical noise.
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| CN110890689A (en) * | 2019-12-04 | 2020-03-17 | 成都天奥电子股份有限公司 | Feedback locking structure capable of simultaneously realizing frequency stability and noise suppression of laser |
| CN116107186B (en) * | 2023-04-04 | 2023-09-01 | 成都量子时频科技有限公司 | Integrated closed ultrathin rubidium spectrum lamp device applied to miniaturized rubidium atomic clock |
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| SU459852A1 (en) * | 1972-07-04 | 1975-02-05 | Ленинградская Военная Инженерная Краснознаменная Академия Имени А.Ф.Можайского | Current to frequency converter |
| FR2733319B1 (en) * | 1995-04-21 | 1997-05-23 | Air Liquide | METHOD AND DEVICE FOR ANALYZING TRACKS OF IMPURITIES IN A GAS SAMPLE USING A LASER DIODE |
| CN103836421B (en) * | 2014-03-21 | 2016-01-13 | 成都天奥电子股份有限公司 | Be applicable to the rubidium atomic frequency standard spectral lamp device of vacuum condition |
| CN206506152U (en) * | 2017-02-08 | 2017-09-19 | 浙江大学城市学院 | The Non-polarized lamp of caesium mixing helium atom |
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