CN110120812A - For Raman transition frequency generating apparatus in cold atom interference-type gravimeter - Google Patents
For Raman transition frequency generating apparatus in cold atom interference-type gravimeter Download PDFInfo
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- CN110120812A CN110120812A CN201910482152.2A CN201910482152A CN110120812A CN 110120812 A CN110120812 A CN 110120812A CN 201910482152 A CN201910482152 A CN 201910482152A CN 110120812 A CN110120812 A CN 110120812A
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- 238000001069 Raman spectroscopy Methods 0.000 title claims abstract description 11
- 230000007704 transition Effects 0.000 title claims abstract description 9
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims abstract description 18
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/26—Automatic control of frequency or phase; Synchronisation using energy levels of molecules, atoms, or subatomic particles as a frequency reference
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
For Raman transition frequency generating apparatus in cold atom interference-type gravimeter, including high-frequency signal generation circuit unit, low frequency signal generation circuit unit and difference frequency signal circuit unit；High-frequency signal generation circuit cells modulate exports high-frequency high-power signal, atomic clock, the one one point of four power splitters, high frequency oscillator and the 2nd 1 point of four power splitters including signal input port；The low frequency signal of low frequency signal generation circuit unit output modulation, the first high-frequency signal is carried out to be mixed the last electromagnetic wave for exporting specific frequency and power with the second low frequency signal including Direct Digital Synthesizer DDS, varactor doubler, the first amplifier, bandpass filter, switch difference frequency signal circuit unit, including frequency mixer, the second bandpass filter, the second amplifier, isolator, one-to-two power splitter.The advantages that present invention has high stability, and response is fast, output function multiplicity, volume is light and handy, and compatibility is strong, and use cost is relatively low.
Description
Technical field
The present invention relates to microwave-radio technology fields, especially for cold atom in cold atom interference-type gravimeter in electromagnetism
Specific frequency needed for the lower generation Raman transition of wave effect.
Background technique
The Raman transition of ultralow temperature atom is the pith that cold atom interference gravimeter is realized, Raman transition is to electromagnetic wave
Frequency and power have special requirement.
It needs be mixed with specific frequency by high frequency during realization and is locked in atomic transition resonant frequency point, this
A Frequency point is a very crucial part in Raman state selection.But existing commercial radio frequency module is to cold atom interference-type weight
The response speed of Raman state selection in power instrument is slow, stability is poor, has a single function, whole excessively heavy and use cost height.
Summary of the invention
The present invention will overcome the disadvantages mentioned above of the prior art, provide a kind of for Raman jump in cold atom interference-type gravimeter
Frequency generating apparatus is moved, the device performance is stable, compatibility is strong and use cost is low.
The present invention provides one kind for Raman transition frequency generating apparatus in cold atom interference-type gravimeter, mainly includes
Functional unit has: high-frequency signal generation circuit unit 1, low frequency signal generation circuit unit 2 and difference frequency signal circuit unit 3.
The modulation output high-frequency high-power signal of high-frequency signal generation circuit unit 1, atomic clock including signal input port,
One one point of four power splitters, high frequency oscillator and the 2nd 1 point of four power splitters.Wherein, the output of signal input part atomic clock
End is connected with the first foot of the one one point of four power splitters, the second end and 7GHz high frequency oscillator first of the one one point of four power splitters
End is connected, third, the four, the 5th external outputs in end, and the first of 7GHz high frequency oscillator second end and the 2nd 1 point of four power splitters
End is connected, and the second end of the 2nd 1 point of four power splitters is connected with the frequency mixer first end of difference frequency signal circuit unit 3, third, the
Four, the 5th external output in end.
The low frequency signal of the output modulation of low frequency signal generation circuit unit 2, including Direct Digital Synthesizer
DDS, varactor doubler, the first amplifier, bandpass filter, switch.Wherein from DDS come out low frequency signal and frequency multiplier first
End is connected, and the second end of frequency multiplier is connected with the first end of the first amplifier, the first end of second end and the first bandpass filter
It is connected, the second end of the first bandpass filter is connected with the first end of switch, the second end and difference frequency signal circuit unit 3 of switch
The second end of frequency mixer is connected.
Difference frequency signal circuit unit 3 carries out the first high-frequency signal with the second low frequency signal to be mixed last output specific frequency
With the electromagnetic wave of power, including frequency mixer, the second bandpass filter, the second amplifier, isolator, one-to-two power splitter.
The signal wherein exported after frequency mixer is required resonant frequency, the third end of frequency mixer and the first end phase of bandpass filter
Even, the second end of bandpass filter is connected with the first end of isolator, the second end of isolator and the first of one-to-two power splitter
End is connected, and the second end of one-to-two power splitter finally exports the microwave of two-way resonant frequency.
Advantages of the present invention: can quickly provide stable and specific frequency microwave in cold atom interference-type gravimeter,
The advantages that with high stability, response is fast, output function multiplicity, volume is light and handy, and compatibility is strong, and use cost is relatively low.
Detailed description of the invention
Fig. 1 is structural unit block diagram of the invention；
Fig. 2 is design schematic diagram of the invention.
Fig. 2 a is 1 enlarged drawing of high-frequency signal generation circuit unit
Fig. 2 b is self-control 2 enlarged drawing of low frequency signal generation circuit unit
Fig. 2 c is 3 enlarged drawing of difference frequency signal circuit unit
Specific embodiment
Technical solution of the present invention is further illustrated with reference to the accompanying drawing.
Referring to Fig. 1 and Fig. 2, Fig. 2 a, Fig. 2 b, Fig. 2 c, of the invention is used for cold atom interference-type gravimeter medium-high frequency microwave
Generator, including sequentially connected high-frequency signal generation circuit unit 1, low frequency signal generation circuit unit 2 and difference frequency signal electricity
Road unit 3.
The modulation output high-frequency high-power signal of high-frequency signal generation circuit unit 1, including the original of signal input port
Secondary clock, the one one point of four power splitters, high frequency oscillator and the 2nd 1 point of four power splitters.Wherein, signal input part atomic clock
Output end is connected with the first foot of the one one point of four power splitters, the second end and high frequency oscillator first of the one one point of four power splitters
End is connected, third, the four, the 5th external outputs in end；The first end phase of high frequency oscillator second end and the 2nd 1 point of four power splitters
Even, the second end of the 2nd 1 point of four power splitters is connected with the frequency mixer first end of resonant frequency signal mixer circuit unit 3, the
Three, the four, the 5th external output in end.
The low frequency signal of the output modulation of low frequency signal generation circuit unit 2, including Direct Digital Synthesizer
DDS, varactor doubler, the first amplifier, bandpass filter, switch.Wherein from DDS come out low frequency signal and frequency multiplier first
End is connected, and the second end of frequency multiplier is connected with the first end of the first amplifier, the first end of second end and the first bandpass filter
It is connected, the second end of the first bandpass filter is connected with the first end of switch, the second end and difference frequency signal circuit unit 3 of switch
The second end of frequency mixer is connected.
Difference frequency signal circuit unit 3 carries out the first high-frequency signal with the second low frequency signal to be mixed last output specific frequency
With the electromagnetic wave of power, including frequency mixer, the second bandpass filter, the second amplifier, isolator, one-to-two power splitter.
The signal wherein exported after frequency mixer is difference frequency signal, and the third end of frequency mixer is connected with the first end of bandpass filter,
The second end of bandpass filter is connected with the first end of isolator, the second end and the first end phase of one-to-two power splitter of isolator
Even, the second end of one-to-two power splitter finally exports two-way difference frequency microwave signal.
Atomic clock output signal by coaxial cable by signal be sent to high frequency oscillator output high-frequency signal it is defeated with DDS again
Low frequency signal out is mixed again after passing through frequency multiplication, the stable difference frequency microwave signal of final output.Wherein high and low frequency signal is logical
Power splitter outside output signal again is crossed, after avoiding the unification of module output and the filter after DDS output and being mixed
Isolator, filter, the signal finally exported is more stable, and bandwidth is narrower, and signal-to-noise ratio is higher.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
Range should not be construed as being limited to the specific forms stated in the embodiments, and protection scope of the present invention is also and in art technology
Personnel conceive according to the present invention it is conceivable that equivalent technologies mean.
Claims (1)
1. for Raman transition frequency generating apparatus in cold atom interference-type gravimeter, including high-frequency signal generation circuit unit
(1), low frequency signal generation circuit unit (2) and difference frequency signal circuit unit (3)；
High-frequency signal generation circuit unit (1) modulation output high-frequency high-power signal, atomic clock including signal input port, the
Divide four power splitters, high frequency oscillator and the 2nd 1 point of four power splitters one by one；Wherein, the output end of signal input part atomic clock
It is connected with the first foot of the one one point of four power splitters, the second end and 7GHz high frequency oscillator first end of the one one point of four power splitters
It is connected, third, the four, the 5th external outputs in end, the first end of 7GHz high frequency oscillator second end and the 2nd 1 point of four power splitters
It is connected, the second end of the 2nd 1 point of four power splitters is connected with the frequency mixer first end of difference frequency signal circuit unit (3), third, the
Four, the 5th external output in end；
The low frequency signal of low frequency signal generation circuit unit (2) output modulation, including Direct Digital Synthesizer
DDS, varactor doubler, the first amplifier, bandpass filter, switch；Wherein from DDS come out low frequency signal and frequency multiplier first
End is connected, and the second end of frequency multiplier is connected with the first end of the first amplifier, the first end of second end and the first bandpass filter
It is connected, the second end of the first bandpass filter is connected with the first end of switch, the second end and difference frequency signal circuit unit of switch
(3) second end of frequency mixer is connected；
Difference frequency signal circuit unit (3) by the first high-frequency signal and the second low frequency signal be mixed last output specific frequency and
The electromagnetic wave of power, including frequency mixer, the second bandpass filter, the second amplifier, isolator, one-to-two power splitter；Its
The middle signal exported after frequency mixer is required resonant frequency, the third end of frequency mixer and the first end phase of bandpass filter
Even, the second end of bandpass filter is connected with the first end of isolator, the second end of isolator and the first of one-to-two power splitter
End is connected, and the second end of one-to-two power splitter finally exports the microwave of two-way resonant frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910482152.2A CN110120812B (en) | 2019-06-04 | 2019-06-04 | Raman transition frequency generating device for cold atom interference type gravimeter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910482152.2A CN110120812B (en) | 2019-06-04 | 2019-06-04 | Raman transition frequency generating device for cold atom interference type gravimeter |
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| Publication Number | Publication Date |
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| CN110120812A true CN110120812A (en) | 2019-08-13 |
| CN110120812B CN110120812B (en) | 2024-05-03 |
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| CN201910482152.2A Active CN110120812B (en) | 2019-06-04 | 2019-06-04 | Raman transition frequency generating device for cold atom interference type gravimeter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113471807A (en) * | 2021-09-01 | 2021-10-01 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Raman optical pulse power stabilizing system for cold atom interferometer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050068115A1 (en) * | 2003-09-29 | 2005-03-31 | Ken Atsumi | Atomic oscillator |
| CN102957425A (en) * | 2012-10-08 | 2013-03-06 | 中国计量科学研究院 | Atomic transition motivation device and method |
| CN106647926A (en) * | 2016-11-18 | 2017-05-10 | 浙江工业大学 | DDS (Direct Digital Frequency Synthesizer) frequency hopping device used for laser time sequence control of cold atom interferometer |
| CN109818249A (en) * | 2018-12-13 | 2019-05-28 | 江汉大学 | Device based on cold atom laser circuit |
| CN210111977U (en) * | 2019-06-04 | 2020-02-21 | 浙江工业大学 | Raman transition frequency generation device for cold atom interference type gravimeter |
-
2019
- 2019-06-04 CN CN201910482152.2A patent/CN110120812B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050068115A1 (en) * | 2003-09-29 | 2005-03-31 | Ken Atsumi | Atomic oscillator |
| CN102957425A (en) * | 2012-10-08 | 2013-03-06 | 中国计量科学研究院 | Atomic transition motivation device and method |
| CN106647926A (en) * | 2016-11-18 | 2017-05-10 | 浙江工业大学 | DDS (Direct Digital Frequency Synthesizer) frequency hopping device used for laser time sequence control of cold atom interferometer |
| CN109818249A (en) * | 2018-12-13 | 2019-05-28 | 江汉大学 | Device based on cold atom laser circuit |
| CN210111977U (en) * | 2019-06-04 | 2020-02-21 | 浙江工业大学 | Raman transition frequency generation device for cold atom interference type gravimeter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113471807A (en) * | 2021-09-01 | 2021-10-01 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Raman optical pulse power stabilizing system for cold atom interferometer |
| CN113471807B (en) * | 2021-09-01 | 2021-12-24 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Raman optical pulse power stabilizing system for cold atom interferometer |
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| CN110120812B (en) | 2024-05-03 |
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