CN116256567A - Stable power optical fiber coupling probe of Redberg atomic microwave receiver - Google Patents
Stable power optical fiber coupling probe of Redberg atomic microwave receiver Download PDFInfo
- Publication number
- CN116256567A CN116256567A CN202211634142.4A CN202211634142A CN116256567A CN 116256567 A CN116256567 A CN 116256567A CN 202211634142 A CN202211634142 A CN 202211634142A CN 116256567 A CN116256567 A CN 116256567A
- Authority
- CN
- China
- Prior art keywords
- light
- detection light
- optical fiber
- target
- original
- 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.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0871—Complete apparatus or systems; circuits, e.g. receivers or amplifiers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/28—Details of pulse systems
- G01S7/285—Receivers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/35—Details of non-pulse systems
- G01S7/352—Receivers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention discloses a stable power optical fiber coupling probe of a Redberg atomic microwave receiver, which comprises: the detection light stable power module is used for: processing the detection light to obtain detection light with stable power and injecting the detection light into the atomic gas chamber; the coupled light stable power module is used for: processing the coupling light to obtain coupling light with stable power, and injecting the coupling light into an atomic gas chamber through a dichroic mirror so as to excite alkali metal atoms from a ground state to a Redberg state through detection light and the coupling light; the atomic gas cell is used for: when the alkali metal atoms in the Redberg state act on microwaves to be detected, converting microwave signals into optical signals, and injecting the optical signals into a photoelectric detector through a dichroic mirror; the photodetector is used for: and acquiring the microwave information to be detected of the optical signal. The invention solves the signal distortion problem caused by unstable power drift of the detection light and the coupling light in the existing atomic gas chamber, and the probe can be widely applied to microwave measurement and provides support for electronic information systems such as communication, radar and the like.
Description
Technical Field
The invention relates to the technical field of Redberg atom microwave detection, in particular to a stable-power optical fiber coupling probe of a Redberg atom microwave receiver.
Background
The quantum microwave measurement technology based on the Redberg atoms is a novel microwave sensing technology. Compared with the traditional microwave receiving method, the technology has the advantages of high precision, self calibration, ultra wideband, small probe size and the like. The quantum sensing of the Redberg atoms has wide application prospect in the fields of communication, radar, metering and the like, and the core principle is that the correlation of detection light and coupling light is utilized to realize the two-photon excitation of alkali metal, so that the alkali metal atoms are in the Redberg state, and the alkali metal in the Redberg state has high sensitivity to microwaves. Atomic gas cell probes are key factors affecting the overall system integration.
At present, most of detection light and coupling light transmit space light into an atomic gas chamber, and a space light path is unfavorable for miniaturization and portability of quantum microwave detection equipment. The portability of the probe is greatly improved if the probe light and the coupling light are transmitted by using optical fibers. A problem with using optical fibers for both probe and coupled light transmission is how to maintain the output optical power stable. If the power of the detection light and the coupling light is unstable, the detected signal will be distorted, thereby reducing the sensitivity of the reed-burg atomic microwave detector.
Therefore, it is needed to provide a technical solution to solve the above technical problems.
Disclosure of Invention
In order to solve the technical problems, the invention provides a stable-power optical fiber coupling probe of a Redberg atom microwave receiver.
The invention relates to a stable power optical fiber coupling probe of a Redberg atomic microwave receiver, which comprises the following technical scheme:
comprising the following steps: the system comprises a detection light stable power module, a coupling light stable power module, a dichroic mirror, a target photoelectric detector and an atomic gas chamber filled with alkali metal atoms;
the detection light stable power module is used for: performing stable power treatment on the original detection light to obtain target detection light with stable power, and injecting the target detection light into the atomic gas chamber;
the coupling light stable power module is used for: performing stable power processing on the original coupling light to obtain target coupling light with stable power, and injecting the target coupling light into an atomic gas chamber through a dichroic mirror so that the target detection light excites the alkali metal atoms from a ground state to an intermediate state, and the target coupling light excites the alkali metal atoms from the intermediate state to a Redberg state;
the atomic gas cell is used for: when alkali metal atoms in a Redberg state interact with a microwave signal to be detected, converting the microwave signal to be detected into a target optical signal of detection light to be detected, and injecting the target optical signal into the target photoelectric detector through the dichroic mirror;
the target photodetector is used for: and acquiring the microwave information to be detected corresponding to the target optical signal.
The stable-power optical fiber coupling probe of the Redberg atomic microwave receiver has the following beneficial effects:
the atomic gas chamber probe solves the problem of signal distortion caused by unstable drift of the power of the detection light and the coupling light in the existing atomic gas chamber, can be widely applied to a quantum microwave measurement system, and provides support for electronic information systems such as communication, radar and the like.
Based on the scheme, the stable-power optical fiber coupling probe of the Redberg atom microwave receiver can be improved as follows.
Further, the probe light stable power module includes: a first optical fiber attenuator and a first polarization beam splitter prism;
the first optical fiber attenuator is used for: and receiving the original detection light, and performing power attenuation treatment on the original detection light to obtain first detection light, so that the first detection light passes through the first polarization beam splitter prism to obtain the target detection light.
Further, the probe light stable power module further includes: the first PID controller, the first photoelectric detector and the first beam splitting prism are arranged between the first polarization beam splitting prism and the atomic gas chamber;
the first fiber attenuator is specifically configured to: receiving the original detection light, and performing power attenuation treatment on the original detection light to obtain first detection light, so that the first detection light sequentially passes through the first polarization beam splitter prism and the first beam splitter prism to be treated to obtain first beam splitting detection light and second beam splitting detection light;
the first photodetector is configured to: receiving and converting the first beam-splitting detection light to obtain a first voltage signal, and introducing the first voltage signal to the first PID controller;
the first PID controller is used for: and adjusting the optical power attenuation parameter of the first optical fiber attenuator according to the first voltage signal until the second beam splitting detection light is adjusted to the target detection light and is injected into the atomic gas chamber.
Further, the coupled light stable power module includes: a second optical fiber attenuator and a second polarization beam splitter prism;
the second optical fiber attenuator is used for: and receiving the original coupled light, and performing power attenuation treatment on the original coupled light to obtain first coupled light, so that the first coupled light passes through the second polarization beam splitter prism to obtain the target coupled light.
Further, the coupled light stable power module further includes: the second PID controller, the second photoelectric detector and the second beam splitting prism are arranged between the second polarization beam splitting prism and the dichroic mirror;
the second optical fiber attenuator is specifically configured to: receiving the original coupled light, and performing power attenuation treatment on the original coupled light to obtain the first coupled light, so that the first coupled light sequentially passes through the second polarization beam splitter prism and the second beam splitter prism to be treated to obtain first split coupled light and second split Shu Ouge light;
the second photodetector is configured to: receiving the first split coupling light, converting the first split coupling light to obtain a second voltage signal, and guiding the second voltage signal to the second PID controller;
the second PID controller is used for: and adjusting the optical power attenuation parameter of the second optical fiber attenuator according to the second voltage signal until the second split coupling light is adjusted to the target coupling light and is reflected into the atomic gas chamber through the dichroic mirror.
Further, the method further comprises the following steps: a plurality of transmission fibers;
the input end of the first optical fiber attenuator receives the original detection light through the transmission optical fiber, the output end of the first optical fiber attenuator injects the first detection light into the first polarization beam splitting prism through the transmission optical fiber, and the first output end of the first beam splitting prism injects the first beam splitting detection light into the first photoelectric detector through the transmission optical fiber;
the input end of the second optical fiber attenuator receives the original coupled light through the transmission optical fiber, the output end of the second optical fiber attenuator injects the first coupled light into the second polarization beam splitting prism through the transmission optical fiber, and the first output end of the second beam splitting prism injects the first beam splitting coupled light into the second photoelectric detector through the transmission optical fiber;
the dichroic mirror reflects the detection light to be detected passing through the original air chamber into the target photoelectric detector through the transmission optical fiber.
Further, each transmission fiber is: a single mode polarization maintaining optical fiber.
Further, the alkali metal atom includes: rubidium and cesium.
Further, when the alkali metal atom is rubidium, the wavelength range of transmission light of the dichroic mirror is 479-481nm, and the wavelength range of reflection light of the dichroic mirror is 779-781nm; when the alkali metal atom is cesium, the dichroic mirror has a transmission light wavelength range of 509-511nm and a reflection light wavelength range of 850-852nm.
Further, when the alkali metal atom is rubidium, the wavelength range of the original detection light is 779-781nm, and the wavelength range of the original coupling light is 479-481nm;
when the alkali metal atom is cesium, the wavelength range of the original detection light is 850-853nm, and the wavelength range of the original coupling light is 508-511nm.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of a stabilized power fiber coupling probe of a Redberg atomic microwave receiver according to the present invention;
FIG. 2 is a schematic diagram of a second embodiment of a stable power fiber coupled probe of a Redberg atomic microwave receiver according to the present invention;
fig. 3 is a schematic diagram of a first structure of a third embodiment of a stable power fiber coupling probe of a reed burg atom microwave receiver according to the present invention;
fig. 4 shows a second schematic structural diagram of a third embodiment of a stable power fiber coupled probe of a reed burg atom microwave receiver.
Detailed Description
Fig. 1 is a schematic structural diagram of a first embodiment of a stable power fiber coupling probe of a reed burg atom microwave receiver according to the present invention, and as shown in fig. 1, the original air chamber probe 100 includes: a probe light stable power module 110, a coupled light stable power module 120, a dichroic mirror 130, a target photodetector 140, and an atomic gas cell 150 filled with alkali metal atoms.
The probe light stable power module 110 is configured to: the original probe light is subjected to power stabilization treatment, and target probe light with stable power is obtained and injected into the atomic gas chamber 150.
Wherein (1) the alkali metal atoms in the atomic gas chamber 150 are: rubidium or cesium. (2) The original probe light is: detection light emitted by any laser. When the alkali metal atom is rubidium, the wavelength range of the original probe light is as follows: 779-781nm; when the alkali metal atom is cesium, the wavelength range of the original probe light is: 850-853nm. (3) The target detection light is as follows: the detection light is subjected to optical power processing (attenuation, polarization, beam splitting and the like) by the detection light stable power module 110.
The coupled light stable power module 120 is configured to: the original coupled light is subjected to power stabilization treatment to obtain power-stabilized target coupled light, and the target coupled light passes through the dichroic mirror 130 and is then injected into the atomic gas chamber 150, so that the target probe light excites the alkali metal atom from a ground state to an intermediate state, and the target coupled light excites the alkali metal atom from the intermediate state to a reed burg state.
Wherein, (1) the original coupled light is: any laser emits coupled light. When the alkali metal atom is rubidium, the wavelength range of the originally coupled light is as follows: 479-481nm; when the alkali metal atom is cesium, the wavelength range of the originally coupled light is: 508-511nm. (2) The target coupled light is: the coupled light stable power module 120 is used for performing light power processing (light power attenuation, polarization correction, beam splitting and the like).
The atomic gas chamber 150 is configured to: when the alkali metal atoms in the reed-burg state interact with the microwave signal to be detected, the microwave signal to be detected is converted into a target optical signal of the detection light to be detected, and the target optical signal is injected into the target photodetector 140 through the dichroic mirror 130.
Wherein (1) the target probe light is capable of exciting the alkali metal atom from a ground state to an intermediate state, and the target coupled light is capable of exciting the alkali metal atom from the intermediate state to a reed burg state. (2) The alkali metal atoms in the reed-burg state can act with the radio frequency field, so that the target detection light (detection light to be detected) after the alkali metal atoms in the reed-burg state act contains radio frequency field information. (3) The microwave signal to be measured is provided by an antenna horn and enters the atomic air chamber through a free space. (4) The target optical signal is an optical signal of detection light interacted with the Redberg atoms, and the target optical signal contains microwave information to be detected.
When the frequency of the target detection light approaches the transition frequency between the ground state and the intermediate state, the target detection light can excite the alkali metal atom from the ground state to the intermediate state; when the frequency of the target coupled light approaches the transition frequency between the intermediate state and the reed-burg state, the target coupled light is capable of exciting the alkali metal atom from the intermediate state to the reed-burg state.
The target photodetector 140 is configured to: and acquiring the microwave information to be detected corresponding to the target optical signal.
Wherein, the microwave information to be measured includes but is not limited to: amplitude and frequency of the radio frequency field.
The technical scheme of the embodiment solves the signal distortion problem caused by unstable drift of the power of the detection light and the coupling light in the existing atomic gas chamber, and the probe can be widely applied to a microwave measurement system and provides support for electronic information systems such as communication, radar and the like.
Fig. 2 is a schematic structural diagram of a second embodiment of a stable power fiber coupling probe of a reed burg atomic microwave receiver according to the present invention, and as shown in fig. 2, the atomic gas chamber probe 200 includes: a first optical fiber attenuator 211, a first polarization beam splitter prism 212, a second optical fiber attenuator 221, and a second polarization beam splitter prism 222, a dichroic mirror 230, a target photodetector 240, and an atomic gas cell 250 filled with alkali metal atoms.
The first optical fiber attenuator 211 is configured to: the original probe light is received, and power attenuation processing is performed on the original probe light to obtain a first probe light, so that after the first probe light passes through the first polarization beam splitter prism 212, the target probe light is obtained and injected into the atomic gas chamber 250.
Wherein (1) the first fiber attenuator 211 functions as: the light power of the original detection light is controlled by changing the transmissivity of the original detection light, so that the first detection light is obtained. The magnitude of the transmittance may be determined according to a preset value or may be determined by an external signal received by the first optical fiber attenuator 211. (2) The first polarization beam splitter prism 212 functions as: the polarization direction of the incident first probe light is controlled so that the probe light proceeding to the atomic cell 250 is the same as the polarization direction of the coupled light.
The second fiber attenuator is used for 221: the original coupled light is received, and power attenuation treatment is performed on the original coupled light to obtain first coupled light, so that the first coupled light passes through the second polarization beam splitter prism 222 to obtain the target coupled light, and the target coupled light is injected into the atomic gas chamber 250 through the dichroic mirror 230.
Wherein (1) the second fiber attenuator 221 functions as: and controlling the optical power of the original coupled light by changing the transmissivity of the original coupled light, so as to obtain first coupled light. The magnitude of the changed transmittance may be determined according to a preset value or may be determined by an external signal received by the second optical fiber attenuator 221. (2) The second polarization beam splitter prism 222 functions as: the polarization direction of the incident first coupled light is controlled so that the probe light of the atomic cell 250 is the same as the polarization direction of the coupled light.
The polarization beam splitter prism reflects vertically polarized light (S-light) by the dielectric beam splitter film, and transmits parallel polarized light (P-light), thereby separating the S-polarized light and the P-polarized light. The first polarization beam splitter prism 212 changes the polarization direction of the probe light and the second polarization beam splitter prism 222 changes the polarization direction of the coupled light.
The atomic gas chamber 250 is configured to: when the alkali metal atoms in the reed-burg state interact with the microwave signal to be detected, the microwave signal to be detected is converted into a target optical signal of the detection light to be detected, and the target optical signal is injected into the target photodetector 240 through the dichroic mirror 230.
The target photodetector 240 is configured to: and acquiring the microwave information to be detected corresponding to the target optical signal.
The technical scheme of the embodiment further solves the problem of unstable probe power by stabilizing the optical power and controlling the polarization direction of the detection light and the coupling light through the optical fiber attenuator and the polarization beam splitter prism.
Fig. 3 is a schematic first structural diagram of a third embodiment of a stable power fiber coupled probe of a reed burg atomic microwave receiver according to the present invention, and as shown in fig. 3, the atomic gas chamber probe 300 includes: the first optical fiber attenuator 311, the first polarization beam splitter prism 312, the first beam splitter prism 313, the first photodetector 314, the first PID controller 315, the second optical fiber attenuator 321 and the second polarization beam splitter prism 322, the second beam splitter prism 323, the second photodetector 324, the second PID controller 325, the dichroic mirror 330, the target photodetector 340, and the atomic gas cell 350 filled with alkali metal atoms. The first polarization beam splitter prism 313 is disposed between the first polarization beam splitter prism 312 and the atomic gas cell 350, and the second polarization beam splitter prism 323 is disposed between the second polarization beam splitter prism 322 and the dichroic mirror 330.
The first optical fiber attenuator 311 is specifically configured to: and receiving the original detection light, and performing power attenuation processing on the original detection light to obtain the first detection light, so that the first detection light sequentially passes through the first polarization beam splitter prism 312 and the first beam splitter prism 313 to obtain first beam splitting detection light and second beam splitting detection light.
Wherein, (1) the first beam splitting probe light is: the detection light reflected by the first beam splitting prism 313 and input to the first photodetector 314. (2) The second beam splitting probe light is: the probe light inputted into the atomic gas cell 350 after being transmitted through the first beam splitting prism 313.
Note that, the splitting ratio (first split probe light and second split probe light) in the first split prism 313 may be set according to the need, for example: 10:90.
the first photodetector 314 is configured to: the first split probe light is received and converted to obtain a first voltage signal, and the first voltage signal is led to the first PID controller 315.
Wherein the first voltage signal is: and according to the voltage signal obtained by the first beam splitting probe light, the voltage signal is used for controlling the transmissivity of the first optical fiber attenuator 311 to the probe light.
The first PID controller 315 is configured to: and adjusting the optical power attenuation parameter of the first optical fiber attenuator 311 according to the first voltage signal until the second split detection light is adjusted to the target detection light and injected into the atomic gas chamber 350.
Wherein, the optical power attenuation parameters are: the transmittance of the probe light decreases as the first voltage signal increases.
The second optical fiber attenuator 321 is specifically configured to: and receiving the original coupled light, and performing power attenuation processing on the original coupled light to obtain the first coupled light, so that the first coupled light sequentially passes through the second polarization beam splitting prism 322 and the second beam splitting prism 323 to be processed to obtain first beam splitting coupled light and second beam splitting coupled light.
Wherein (1) the first split coupled light is: the coupled light reflected by the second beam splitter prism 323 and inputted to the first photodetector 324. (2) The second fraction Shu Ouge light is: the coupled light is transmitted through the second beam splitting prism 323 and then input into the atomic gas cell 350.
Note that, the splitting ratio (the first split coupling light and the second split Shu Ouge light) in the second beam splitting prism 323 may be set according to the need, for example: 10:90.
the second photodetector 324 is configured to: the first split coupled light is received and converted to a second voltage signal, which is directed to the second PID controller 325.
Wherein the second voltage signal is: and based on the voltage signal obtained by the second split coupled light, the voltage signal is used to control the transmittance of the coupled light by the second optical fiber attenuator 3321.
The second PID controller 325 is configured to: and adjusting the optical power attenuation parameter of the second optical fiber attenuator according to the second voltage signal until the second split coupled light is adjusted to the target coupled light and is injected into the atomic gas chamber 350 through the dichroic mirror 330.
The atomic gas chamber 350 is configured to: when the alkali metal atoms in the reed-burg state interact with the microwave signal to be detected, the microwave signal to be detected is converted into a target optical signal of the detection light to be detected, and the target optical signal is injected into the target photodetector 340 through the dichroic mirror 330.
The target photodetector 340 is configured to: and acquiring the microwave information to be detected corresponding to the target optical signal.
The technical scheme of the embodiment controls the detection light and the coupling light entering the atomic gas chamber through the PID controller and the beam splitting prism, and further solves the problem of unstable power of the atomic gas chamber probe.
Preferably, in the third embodiment, further comprising: a plurality of transmission fibers 6.
The input end of the first optical fiber attenuator 311 receives the original detection light through the transmission optical fiber 6, the output end of the first optical fiber attenuator 311 injects the first detection light into the first polarization beam splitter prism 312 through the transmission optical fiber 6, and the first output end of the first beam splitter prism 313 injects the first beam split detection light into the first photodetector 314 through the transmission optical fiber 6;
the input end of the second optical fiber attenuator 321 receives the original coupled light through the transmission optical fiber 6, the output end of the second optical fiber attenuator injects the first coupled light into the second polarization beam splitter prism 322 through the transmission optical fiber 6, and the first output end of the second beam splitter prism 323 injects the first split coupled light into the second photodetector 324 through the transmission optical fiber 6;
the dichroic mirror 330 reflects the detection light to be detected passing through the original gas cell 350 into the target photodetector 340 through the transmission optical fiber 6.
In addition, fig. 4 shows a second schematic structural diagram of a third embodiment of a stable power optical fiber coupling probe of a reed burg atomic microwave receiver according to the present invention, where the second schematic structural diagram is based on the first schematic structural diagram of the third embodiment:
preferably, each transmission fiber 6 is: a single mode polarization maintaining optical fiber.
Preferably, in any of the above embodiments, the alkali metal atom includes: rubidium and cesium.
When the alkali metal atom is rubidium, the transmission light wavelength range of the dichroic mirror is 479-481nm, and the reflection light wavelength range of the dichroic mirror is 779-781nm; when the alkali metal atom is cesium, the dichroic mirror has a transmission light wavelength range of 509-511nm and a reflection light wavelength range of 850-852nm.
When the alkali metal atom is rubidium, the wavelength range of the original detection light is 779-781nm, and the wavelength range of the original coupling light is 479-481nm;
when the alkali metal atom is cesium, the wavelength range of the original detection light is 850-853nm, and the wavelength range of the original coupling light is 508-511nm.
Preferably, in the above third embodiment, further comprising: a first port 1, a second port 2, a third port 3, a fourth port 4 and a fifth port 5.
The first port 1 is disposed at an input end of the first polarization beam splitter prism 312, and is configured to receive the first probe light output by the first optical fiber attenuator 311.
The second port 2 is disposed at a first output end of the first beam splitting prism 313, and is configured to transmit the first beam splitting probe light to the first photodetector 314 through the second port 2.
The third port 3 is disposed at the first output end of the second beam splitter prism 323, and is configured to transmit the first beam split coupled light to the second photodetector 324 through the third port 3.
The fourth port 4 is disposed at an input end of the second polarization beam splitter prism 322, and is configured to receive the first coupled light output by the second optical fiber attenuator 312.
The fifth port 5 is disposed at an output end of the dichroic mirror 330, and is configured to inject the detection light to be detected into the target photodetector 350 through the fifth port.
In the description provided herein, numerous specific details are set forth. It will be appreciated, however, that embodiments of the invention may be practiced without such specific details. Similarly, in the above description of exemplary embodiments of the invention, various features of embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. Wherein the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names. The steps in the above embodiments should not be construed as limiting the order of execution unless specifically stated.
Claims (10)
1. A stable power fiber optic coupling probe for a reed burg atomic microwave receiver, comprising: the system comprises a detection light stable power module, a coupling light stable power module, a dichroic mirror, a target photoelectric detector and an atomic gas chamber filled with alkali metal atoms;
the detection light stable power module is used for: performing stable power treatment on the original detection light to obtain target detection light with stable power, and injecting the target detection light into the atomic gas chamber;
the coupling light stable power module is used for: performing stable power processing on the original coupling light to obtain target coupling light with stable power, and injecting the target coupling light into an atomic gas chamber through a dichroic mirror so that the target detection light excites the alkali metal atoms from a ground state to an intermediate state, and the target coupling light excites the alkali metal atoms from the intermediate state to a Redberg state;
the atomic gas cell is used for: when alkali metal atoms in a Redberg state interact with a microwave signal to be detected, converting the microwave signal to be detected into a target optical signal of detection light to be detected, and injecting the target optical signal into the target photoelectric detector through the dichroic mirror;
the target photodetector is used for: and acquiring the microwave information to be detected corresponding to the target optical signal.
2. The stabilized power fiber coupled probe of a reed burg atom microwave receiver as recited in claim 1, wherein the probe light stabilized power module comprises: a first optical fiber attenuator and a first polarization beam splitter prism;
the first optical fiber attenuator is used for: and receiving the original detection light, and performing power attenuation treatment on the original detection light to obtain first detection light, so that the first detection light passes through the first polarization beam splitter prism to obtain the target detection light.
3. The stabilized power fiber coupled probe of a reed burg atom microwave receiver as recited in claim 2, wherein the probe light stabilized power module further comprises: the first PID controller, the first photoelectric detector and the first beam splitting prism are arranged between the first polarization beam splitting prism and the atomic gas chamber;
the first fiber attenuator is specifically configured to: receiving the original detection light, and performing power attenuation treatment on the original detection light to obtain first detection light, so that the first detection light sequentially passes through the first polarization beam splitter prism and the first beam splitter prism to be treated to obtain first beam splitting detection light and second beam splitting detection light;
the first photodetector is configured to: receiving and converting the first beam-splitting detection light to obtain a first voltage signal, and introducing the first voltage signal to the first PID controller;
the first PID controller is used for: and adjusting the optical power attenuation parameter of the first optical fiber attenuator according to the first voltage signal until the second beam splitting detection light is adjusted to the target detection light and is injected into the atomic gas chamber.
4. A stabilized power fiber optic coupling probe for a reed-burg atomic microwave receiver as defined in claim 3, wherein said coupled optical stabilized power module comprises: a second optical fiber attenuator and a second polarization beam splitter prism;
the second optical fiber attenuator is used for: and receiving the original coupled light, and performing power attenuation treatment on the original coupled light to obtain first coupled light, so that the first coupled light passes through the second polarization beam splitter prism to obtain the target coupled light.
5. The stabilized power fiber coupling probe of a reed burg atom microwave receiver as in claim 4, wherein the coupled optical stabilized power module further comprises: the second PID controller, the second photoelectric detector and the second beam splitting prism are arranged between the second polarization beam splitting prism and the dichroic mirror;
the second optical fiber attenuator is specifically configured to: receiving the original coupled light, and performing power attenuation treatment on the original coupled light to obtain the first coupled light, so that the first coupled light sequentially passes through the second polarization beam splitter prism and the second beam splitter prism to be treated to obtain first split coupled light and second split Shu Ouge light;
the second photodetector is configured to: receiving the first split coupling light, converting the first split coupling light to obtain a second voltage signal, and guiding the second voltage signal to the second PID controller;
the second PID controller is used for: and adjusting the optical power attenuation parameter of the second optical fiber attenuator according to the second voltage signal until the second split coupling light is adjusted to the target coupling light and is reflected into the atomic gas chamber through the dichroic mirror.
6. The stabilized power fiber optic coupling probe of a reed burg atom microwave receiver as defined in claim 5, further comprising: a plurality of transmission fibers;
the input end of the first optical fiber attenuator receives the original detection light through the transmission optical fiber, the output end of the first optical fiber attenuator injects the first detection light into the first polarization beam splitting prism through the transmission optical fiber, and the first output end of the first beam splitting prism injects the first beam splitting detection light into the first photoelectric detector through the transmission optical fiber;
the input end of the second optical fiber attenuator receives the original coupled light through the transmission optical fiber, the output end of the second optical fiber attenuator injects the first coupled light into the second polarization beam splitting prism through the transmission optical fiber, and the first output end of the second beam splitting prism injects the first beam splitting coupled light into the second photoelectric detector through the transmission optical fiber;
the dichroic mirror reflects the detection light to be detected passing through the original air chamber into the target photoelectric detector through the transmission optical fiber.
7. The stabilized power fiber optic coupling probe of a reed-burg atom microwave receiver as in claim 6, wherein each transmission fiber is: a single mode polarization maintaining optical fiber.
8. The stabilized power fiber optic coupling probe of a reed burg atom microwave receiver as recited in any of claims 1-7, wherein the alkali metal atom comprises: rubidium and cesium.
9. The stabilized power fiber optic coupling probe of a reed burg atom microwave receiver of claim 8, wherein when the alkali metal atom is rubidium, the dichroic mirror has a transmission wavelength range of 479-481nm and a reflection wavelength range of 779-781nm; when the alkali metal atom is cesium, the dichroic mirror has a transmission light wavelength range of 509-511nm and a reflection light wavelength range of 850-852nm.
10. The stable power fiber optic coupling probe of the reed burg atom microwave receiver of claim 8, wherein when the alkali metal atom is rubidium, the wavelength range of the original probe light is 779-781nm, and the wavelength range of the original coupled light is 479-481nm;
when the alkali metal atom is cesium, the wavelength range of the original detection light is 850-853nm, and the wavelength range of the original coupling light is 508-511nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211634142.4A CN116256567A (en) | 2022-12-19 | 2022-12-19 | Stable power optical fiber coupling probe of Redberg atomic microwave receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211634142.4A CN116256567A (en) | 2022-12-19 | 2022-12-19 | Stable power optical fiber coupling probe of Redberg atomic microwave receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116256567A true CN116256567A (en) | 2023-06-13 |
Family
ID=86681707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211634142.4A Pending CN116256567A (en) | 2022-12-19 | 2022-12-19 | Stable power optical fiber coupling probe of Redberg atomic microwave receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116256567A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117929421A (en) * | 2024-03-25 | 2024-04-26 | 中国航天三江集团有限公司 | Device and method for measuring fiber coupling atomic air chamber Redburg atomic quantum microwaves |
-
2022
- 2022-12-19 CN CN202211634142.4A patent/CN116256567A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117929421A (en) * | 2024-03-25 | 2024-04-26 | 中国航天三江集团有限公司 | Device and method for measuring fiber coupling atomic air chamber Redburg atomic quantum microwaves |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110401492B (en) | Radio amplitude modulation signal receiving method based on quantum effect and amplitude modulation quantum receiver | |
| CN112946542B (en) | Self-excitation atomic magnetic detection device and detection method based on single beam | |
| CN112098737B (en) | Method and device for measuring intensity of microwave electric field | |
| EP1473605A2 (en) | Coherent population trapping detector | |
| CN104062608A (en) | Light shift elimination method for SERF atomic spin magnetometers | |
| CN106093599B (en) | Optical probe and electromagnetic field measuring equipment and measuring method thereof | |
| CN112946541B (en) | Alkali metal atomic spin all-optical control system and detection method | |
| CN116256567A (en) | Stable power optical fiber coupling probe of Redberg atomic microwave receiver | |
| CN112615251A (en) | Laser frequency and power dual-stabilization method and device for atomic gyroscope | |
| CN113721173B (en) | Optical fiber SERF atomic magnetometer device based on reflection type bidirectional pumping | |
| CN110579724A (en) | Multichannel pulse pumping atomic magnetic force sensing device | |
| CN101968507B (en) | Optical fiber voltage sensor and adjustment method thereof | |
| CN108539569A (en) | A kind of method that ultra-narrow filters with atomic light filter and its realization | |
| CN110988504A (en) | Laser intensity stability control device and method for Reidberg atom microwave electric field intensity meter | |
| CN114899702A (en) | Laser device offset frequency stabilizing device and method based on optical fiber ring resonator | |
| CN113447861A (en) | Magnetic field measuring device | |
| CN113655414B (en) | Optical magnetic field sensing system using piezoelectric ceramics to generate resonance frequency band | |
| US6532072B1 (en) | Fiber-amplifier cavity for cavity ring down spectroscopy | |
| CN114325130A (en) | High-efficiency optical fiber coupling atomic gas chamber probe and manufacturing method thereof | |
| CN103293533B (en) | A kind of laser radar system for atmospheric ozone observation and observation procedure | |
| CN212301699U (en) | Laser intensity stability control device of rydberg atom microwave electric field intensity meter | |
| US6815662B2 (en) | Apparatus and method for measuring optical signals by optical sampling | |
| CN113758598B (en) | Temperature measurement system and method based on mixed alkali metal atomic light absorption | |
| CN114895225B (en) | Device and method for inhibiting atomic spin precession to detect optical power fluctuation | |
| CN110579723A (en) | Multichannel optical pump atom magnetic force sensing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |