CN209709375U - A kind of acousto-optic frequency-sweeping apparatus based on multi-way acousto-optic frequency translation technology - Google Patents
A kind of acousto-optic frequency-sweeping apparatus based on multi-way acousto-optic frequency translation technology Download PDFInfo
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- CN209709375U CN209709375U CN201920460295.9U CN201920460295U CN209709375U CN 209709375 U CN209709375 U CN 209709375U CN 201920460295 U CN201920460295 U CN 201920460295U CN 209709375 U CN209709375 U CN 209709375U
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Abstract
The utility model discloses a kind of acousto-optic frequency-sweeping apparatus based on multi-way acousto-optic frequency translation technology, are related to multi-way acousto-optic frequency translation technical field.The present apparatus includes the 1st, 2,3 half wave plates, the 1st, 2,3 polarization splitting prisms, Faraday polarization apparatus, Glan-Taylor prism, 1st, 2 reflecting mirrors, the 1st, 2,3 plano-convex lens, the 1st, 2 corner cube mirrors, acousto-optic modulator, RF driving source, electric rotary table, quarter-wave plate, photodetector, the 1st, 2 cables and feedback module.The utility model is on the basis of existing multi-way acousto-optic frequency translation technology, utilize the technologies such as synchronous scanning, angle control and power stability, the acousto-optic sweep frequency technique for the advantages that having both high bandwidth, high-diffraction efficiency and high cleanliness is realized, provides an excellent practical technique for fields such as spectroscopy, laser communication and cold atom experiments.
Description
Technical field
The utility model relates to multi-way acousto-optic frequency translation technical fields more particularly to a kind of based on multi-way acousto-optic frequency translation technology
Acousto-optic frequency-sweeping apparatus.
Background technique
The a wide range of sweep frequency technique of laser has important answer in the various aspects such as optic communication, spectroscopy and Physics of Cold Atoms
With.The technologies such as beat frequency locking phase can output laser directly to laser carry out frequency sweep, bandwidth is larger, but when implementing
Usually require another the laser of frequency locking and a series of related devices, it is expensive, and cannot be considered in terms of scanning accuracy with
Scanning speed.
Other than laser directly scans, laser is carried out usually using electrooptic modulator or acousto-optic modulator in experiment
Frequency sweep operation.Electrooptic modulator has very high bandwidth, but is lower than 34% on its efficiency theory, and the shift frequency light and load generated
The glistening light of waves can not separate, and influence the degree of purity of laser；Although and acousto-optic modulator spatially separates two light, its shift frequency
Range and bandwidth are usually smaller, and often efficiency is extremely low for some high bandwidth acousto-optic modulators.
For defect present in electrooptic modulator and acousto-optic modulator, it is thus proposed that certain methods.For example utilize saw
Tooth wave driving electrooptic modulator can greatly improve its efficiency, but by sawtooth wave limited its bandwidth only less than
2GHz, and the COINCIDENCE PROBLEMS of shift frequency light and carrier light can not be solved, it can refer to document (Wideband, efficient
optical serrodyne frequency shifting with a phase modulator and a nonlinear
Transmission line, R.Houtz etc., Opt. Express volume 17, page 19235,2009)；Quadruple pass acousto-optic frequency translation skill
The shift frequency range of art is up to 2GHz, and efficiency can reach 25%, but its bandwidth very little, only tens MHz, can refer to document (A
Four-pass acousto-optic modulator system for lasercooling of sodium atoms,
B.Lu etc., Rev.Sci.Instrum. volume 88, page 076105,2017)；High-order acousto-optic frequency translation, can although shift frequency range is big
Up to several GHz, but its bandwidth is lower and efficiency is very low, and only 0.1% is even lower when high-order, can refer to document (High
coherent bi-chromatic laser with gigahertz splitting producedby the high
diffraction orders of acousto-optic modulator usedfor coherent population
Trapping experiments, P.Yun etc., Rev.Sci.Instrum. volume 82, page 123104,2011).
It can be seen that existing technology have the defects that it is certain, can not meet simultaneously bandwidth, efficiency, laser degree of purity,
Various requirements such as scanning speed and precision.Therefore we need one to have both bandwidth height, and high-efficient and laser degree of purity is high
The advantages that sweep frequency technique.
Utility model content
The purpose of this utility model, which is that, overcomes shortcoming and defect of the existing technology, provides a kind of based on multi-way sound
The acousto-optic frequency-sweeping apparatus of light frequency shift technique utilizes existing multi-way acousto-optic frequency translation technology, realize high bandwidth, high efficiency and laser
Pure a wide range of frequency sweep.
Purpose of the utility model is realized as follows:
By 12 times by acousto-optic modulator, large-scale shift frequency is realized.By to RF driving source and electric rotary table
Real-time control, ensure that high bandwidth and high efficiency, to realize a wide range of frequency sweep.
The present apparatus includes the 1st, 2,3 half wave plates, the 1st, 2,3 polarization splitting prisms, Faraday polarization apparatus, Glan Thailand
Le prism, the 1st, 2 reflecting mirrors, the 1st, 2,3 plano-convex lens, the 1st, 2 corner cube mirrors, acousto-optic modulator, RF driving source are electronic
Turntable, quarter-wave plate, photodetector, the 1st, 2 cables and feedback module；
Its position and connected relation are:
1st half wave plate, the 2nd polarization splitting prism, Faraday polarization apparatus and Glan-Taylor prism are arranged successively,
In the transmission polarization direction of the 2nd polarization splitting prism differ 45 ° with Glan-Taylor prism transmission polarization direction, and change direction with
Faraday polarization apparatus direction of rotation is consistent；
2nd half wave plate, the 2nd polarization splitting prism and the first reflecting mirror are arranged successively and interact, the 2nd two/
The polarization axis direction of one wave plate guarantees that incident light a1 has maximum transmission；
1st plano-convex lens, the 1st corner cube mirror, the 2nd plano-convex lens, acousto-optic modulator, the 3rd plano-convex lens, a quarter
Wave plate, the 2nd corner cube mirror and the 2nd reflecting mirror are arranged successively and interact；
2nd plano-convex lens focal lengths identical and less than the 1st plano-convex lens with the 3rd plano-convex lens focal length；The reflection of 1st right angle
Mirror is overlapped with the left side focal plane of focal plane on the right side of the 1st plano-convex lens and the 2nd plano-convex lens；Acousto-optic modulator germ nucleus with
2nd plano-convex lens right focus and the 3rd plano-convex lens left focus are overlapped；2nd corner cube mirror, the 2nd reflecting mirror with the 3rd plano-convex
Focal plane is overlapped on the right side of lens；Quarter-wave plate is located in front of the second reflecting mirror；
Above-mentioned all devices will collectively form a 12 journey acousto-optic frequency shift devices；
RF driving source, electric rotary table are connect with acousto-optic modulator, constitute synchronous frequency sweep and angle control module；
3rd half wave plate, the 3rd polarization splitting prism, photodetector, the 1st cable, feedback module, the 2nd cable
Line and RF driving source are sequentially communicated and interact, and constitute power stability module.
The utility model has following advantages and good effect:
1, bandwidth is high: its bandwidth is up to 1GHz or more；
2, high-efficient: its efficiency is 5% or more within the scope of whole bandwidth, and peak efficiency is up to 15% or more；
3, degree of purity is preferable: since acousto-optic modulator carrier wave and diffraction light space separate, final extinction ratio is higher than 50:1,
Far exceed electrooptic modulator；
4, scanning accuracy is high, and speed is fast: frequency sweep determines by the output frequency of RF driving source, and speed then depend on it is electronic
The revolving speed of turntable, the utility model can take into account scanning speed and scanning accuracy；
5, operating mode is flexible: other than frequency sweep mode, can be used for frequency hopping operating mode.
In short, utilizing synchronous scanning, angle control and power stability on the basis of existing multi-way acousto-optic frequency translation technology
Etc. technologies, realize the acousto-optic sweep frequency technique for the advantages that having both high bandwidth, high-diffraction efficiency and high cleanliness；For spectroscopy,
The fields such as laser communication and cold atom experiment provide an excellent practical technique.
Detailed description of the invention
Fig. 1 is the structural block diagram (direction X-Y) of the present apparatus；
Fig. 2 is the structural block diagram (direction X-Z) of the present apparatus.
Wherein:
The 1st half wave plate of 1-1-, the 2nd half wave plate of 1-2-；
The 1st polarization splitting prism of 2-1-, the 2nd polarization splitting prism of 2-2-；
3-Faraday polarization apparatus；
4-Glan-Taylor prisms；
The 1st reflecting mirror of 5-1-；The 2nd reflecting mirror of 5-2-；
The 1st plano-convex lens of 6-1-, the 2nd plano-convex lens of 6-2-, the 3rd plano-convex lens of 6-3-；
The 1st corner cube mirror of 7-1-, the 2nd corner cube mirror of 7-2-；
8-acousto-optic modulators；
9-RF driving sources；
10-electric rotary tables；
11-quarter-wave plates；
12-photodetectors；
The 1st cable of 13-1-, the 2nd cable of 13-2-；
14-feedback modules；
A1-incident light, a2-emergent light.
Specific embodiment
It is described in detail with reference to the accompanying drawings and examples:
One, overall
By 12 times by acousto-optic modulator, large-scale shift frequency is realized.By to RF driving source and electric rotary table
Real-time control, ensure that high bandwidth and high efficiency, to realize a wide range of frequency sweep.
Such as Fig. 1,2, this system includes the 1st, 2,3 half wave plate 1-1,1-2,1-3, the 1st, 2,3 polarization splitting prisms
2-1,2-2,2-3, Faraday polarization apparatus 3, Glan-Taylor prism the 4, the 1st, 2 reflecting mirror 5-1,5-2, the 1st, 2,3 plano-convex lens 6-
1,6-2,6-3, the 1st, 2 corner cube mirror 7-1,7-2, acousto-optic modulator 8, RF driving source 9, electric rotary table 10, four/
One wave plate 11, photodetector the 12, the 1st, 2 cable 13-1,13-2 and feedback module 14；
Its position and connected relation are:
1st half wave plate 1-1, the 2nd polarization splitting prism 2-1, Faraday polarization apparatus 3 and Glan-Taylor prism 4 according to
Secondary arrangement, wherein the transmission polarization direction of the 2nd polarization splitting prism 2-1 is differed with 4 transmission polarization direction of Glan-Taylor prism
45 °, and it is consistent with 3 direction of rotation of Faraday polarization apparatus to change direction；
2nd half wave plate 1-2, the 2nd polarization splitting prism 2-2 and the first reflecting mirror 5-1 are arranged successively, and the 2nd two point
One of wave plate 1-2 polarization axis direction guarantee incident light a1 have maximum transmission；
1st plano-convex lens 6-1, the 1st corner cube mirror 7-1, the 2nd plano-convex lens 6-2, acousto-optic modulator 8, the 3rd plano-convex are saturating
Mirror 6-3, quarter-wave plate 11, the 2nd corner cube mirror 7-2, the 2nd reflecting mirror 5- 2 are sequentially communicated and interact；
2nd plano-convex lens 6-2 focal length identical and less than the 1st plano-convex lens 6-1 with the 3rd plano-convex lens 6-3 focal length；1st
Corner cube mirror 7-1 is overlapped with focal plane on the right side of the 1st plano-convex lens 6-1 and the left side focal plane of the 2nd plano-convex lens 6-2；Sound
8 germ nucleus of optical modulator is overlapped with the 2nd plano-convex lens 6-2 right focus and the 3rd plano-convex lens 6-3 left focus；The reflection of 2nd right angle
Mirror 7-2, the 2nd reflecting mirror 5-2 are overlapped with focal plane on the right side of the 3rd plano-convex lens；Quarter-wave plate 11 is located at the second reflecting mirror
In front of 5-2；
Above-mentioned all devices will collectively form a 12 journey acousto-optic frequency shift devices；
RF driving source 9, electric rotary table 10 are connect with acousto-optic modulator 8, constitute synchronous frequency sweep and angle controls mould
Block；
3rd half wave plate 1-3, the 3rd polarization splitting prism 2-3, photodetector 12, the 1st cable 13-1, feedback
Module 14, the 2nd cable 13-2 and RF driving source 9 are sequentially communicated and interact, and constitute power stability module.
Two, functional component
Functional component described below is working standard part.
1, the 1st, 2,3 half wave plate 1-1,1-2,1-3
Half wave plate is a kind of device for adjusting laser polarization direction.
2, the 1st, 2,3 polarization splitting prism 2-1,2-2,2-3
Polarization splitting prism is the device that a kind of pair of different polarization direction laser ingredient is transmitted and reflected respectively.
3, Faraday polarization apparatus 3
Faraday polarization apparatus 3 be it is a kind of no matter laser light incident direction, can be by laser polarization direction by fixed-direction rotation
The device of certain angle, it is 45 ° of polarization apparatus that this system, which uses,.
4, Glan-Taylor prism 4
Glan-Taylor prism 4 be it is a kind of only particular polarization laser can by device.
5, the 1st, 2 reflecting mirror 5-1,5-2
Reflecting mirror is the device for reflecting back incident laser by reflexive property.
6, the 1st, 2,3 plano-convex lens 6-1,6-2,6-3
Plano-convex lens can assemble laser, and the focal length of lens that this system uses is followed successively by 150mm, 100mm and
100mm。
7, the 1st, 2 corner cube mirror 7-1,7-2
Corner cube mirror can reflect back in parallel incident laser, change simultaneously its light-beam position.
8, acousto-optic modulator 8
Acousto-optic modulator 8 is a kind of for modulating the device of laser frequency and amplitude, can make its ± 1 grade of diffraction light and zero level
Light is separated with twice of Bragg angle, and most of laser power concentration is modulated to the order of diffraction；Its ± 1 grade of diffracted laser and load
Wave laser frequency difference is the driving frequency of acousto-optic modulator.
9, RF driving source 9
RF driving source 9 is a kind of device of the radiofrequency sinusoidal wave signal of exportable certain power, and can carry out to signal
Frequency modulation(PFM).
10, electric rotary table 10
Electric rotary table 10 is that one kind can control the angle of device on turntable with its device for rotating angle of Electronic control
Degree.
11, quarter-wave plate 11
Quarter-wave plate 11 is a kind of device of polarization that can change laser.
12, photodetector
The power signal of laser can be converted to electric signal by photodetector 12.
13, the 1st, 2 cable 13-1 and 13-2
Cable can be with propagating electrical signals.
14, feedback module 14
Feedback module 14 can carry out feedback control；Specific control signal can be exported for the signal received.
Three, working principle
By taking 12 journey acousto-optic frequency translation technologies as an example, the working principle of the utility model is illustrated in detail below.
Half wave plate 1-1, the first polarization splitting prism 2-1, Faraday polarization apparatus 3, Glan-Taylor prism the 4, the 2nd two
/ mono- wave plate 1-2, the 2nd polarization splitting prism 2-2, the 1st reflecting mirror 5-1, the 1st plano-convex lens 6-1, the 1st corner cube mirror 7-
1, the 2nd plano-convex lens 6-2, acousto-optic modulator 8, RF driving source 9, the 3rd plano-convex lens 6-3, the 2nd corner cube mirror 7-2, four points
One of wave plate 11 and the 2nd reflecting mirror 5-2 collectively form 12 journey acousto-optic frequency translation systems, incident light a1 passes through 12 journey acousto-optic frequency translation systems
After system, output light a2.
8 centre frequency of acousto-optic modulator that this system uses is 350MHz (AA optoelectronic, MT350-
B60), the centre frequency under 12 journey shift frequencies is 4.2GHz, and corresponding gross efficiency is greater than 15%.
RF driving source 9 and electric rotary table 10 are connected with acousto-optic modulator 8, constitute frequency sweep and angle control module.
Wherein RF driving source 9 can produce the sinusoidal signal of certain frequency and power and be supplied to acousto-optic modulator as driving signal
8, and electric rotary table 10 can adjust the angle of acousto-optic modulator 8 in the horizontal direction.
RF driving source 9 can carry out the operation such as frequency modulation, amplitude modulation and frequency sweep, and the utility model embodiment uses
The DG4202 signal generator of RIGOL company, and by frequency multiplication after be supplied to acousto-optic modulator 8 as radiofrequency signal.Signal hair
The signal frequency range that raw device provides is 0-200MHz, is 0- 400MHz after frequency multiplication.With 9 frequency of RF driving source
Change, laser can be changed by the angle of diffraction and diffraction efficiency of diffraction light after acousto-optic modulator 8.In 12 journey acousto-optic frequency translations
In system, fraction of angle and efficiency change can be accumulated with 12 times by acousto-optic modulator 8, finally will lead to outgoing light efficiency
Rate declines to a great extent, therefore the change of 9 frequency of RF driving source will greatly influence the efficiency of 12 journey acousto-optic frequency translation systems.For solution
Certainly this problem, the utility model embodiment use the GCD-012060M type electric rotary table of Daheng's photoelectricity.Acousto-optic modulator
8 are fixed on the rotatable platform of electric rotary table 10 and adjust by matched controller its rotational angle and direction.
In the present embodiment, after the output frequency for adjusting RF driving source 9, we are by adjusting the angle of electric rotary table 10 to compensate
Diffraction light bring angle and efficiency change due to frequency shift.In addition, by manually adjust the 1st, 2 reflecting mirror 5-1,5-2 come
It is further compensate for the variation bring efficiency decline of angle of diffraction.In the utility model embodiment, the frequency of signal generator exists
When changing within the scope of 140-200MHz, by above-mentioned compensation way, final efficiency is between 10%-20%.
It is rotated while the frequency sweep operation of the utility model is by carrying out frequency sweep to RF driving source 9 by Program Synchronization
What electric rotary table 10 was realized.One secondary frequencies of every change, electric rotary table 10 have an optimum position to correspond to maximum 12
Journey efficiency.The matching one by one of frequency and position in this way, the maximum frequency sweep operation of efficiency may be implemented in we.Due to frequency sweep
The 1st, 2 reflecting mirror 5-1,5-2 can not be adjusted when operation, therefore its efficiency and bandwidth are slightly below the knot of manual frequency sweep
Fruit.In the present embodiment, when signal generator is carried out from 145-190MHz frequency sweep, final 12 journey efficiency is above 5%, i.e., this is practical
Novel implementation can carry out frequency sweep in the range of being greater than 1GHz.The scanning accuracy of the utility model determines by RF driving source 9,
Precision is much higher than general laser fast scanning techniques；Scanning speed then depends on the revolving speed of electric rotary table 10, this is practical new
10 revolving speed of electric rotary table that type embodiment uses can be completed entire scanned up to 3 rpms in the time of 50ms or so
Journey.
Power stability function when frequency sweep is realized by power stability module.Detailed process is to lead to the sub-fraction of emergent light
The detection window that the 3rd polarization splitting prism 2-3 is reflected into photodetector 12 is crossed, photodetector 12 is then by optical power signals
Be converted to electric signal.Feedback module 14 receive exported according to the parameter of setting after the electric signal that the transmission of photodetector 12 comes it is special
Fixed feedback signal is to RF driving source 9.Feedback signal penetrates the effect modulated to 9 generation amplitude of RF driving source to change
The signal amplitude and then change laser that frequency driving source 9 exports pass through efficiency when acousto-optic modulator 8, guarantee that the power of output light is steady
It is fixed.It, can be by the effect of output light when signal generator is carried out from 145-190MHz frequency sweep by the feedback operation of power stability module
Rate is stablized about 5%.
Therefore, frequency sweep is combined with angle control module and power stability module with 12 journey acousto-optic frequency translation technologies, we
The a wide range of frequency sweep that bandwidth is more than 1GHz may be implemented.
Other than frequency sweep, it can also be controlled, be carried out using the frequency hopping of RF driving source 9 and the angle of electric rotary table 10
Two even more than the frequency hopping operation between Frequency point, parameter is identical as frequency sweep operation.
Due to using multi-way acousto-optic frequency translation technology, relative to electrooptic modulator the utility model spectroscopic pure with higher
Degree, the extinction ratio of final output light is in 50:1 or more.
In conclusion the utility model overcomes low bandwidth existing for existing technology, low efficiency and degree of purity is low etc. lacks
Point realizes a wide range of frequency sweep of high bandwidth, high efficiency and High Extinction Ratio, is the phases such as laser communication, spectrum and Physics of Cold Atoms
Pass field provides a kind of very practical sweep frequency technique.
Claims (1)
1. a kind of acousto-optic frequency-sweeping apparatus based on multi-way acousto-optic frequency translation technology, it is characterised in that:
Including the 1st, 2,3 half wave plates (1-1,1-2,1-3), the 1st, 2,3 polarization splitting prisms (2-1,2-2,2-3), method
It draws polarization apparatus (3), Glan-Taylor prism (4), the 1st, 2 reflecting mirrors (5-1,5-2), the 1st, 2,3 plano-convex lens (6-1,6-2,6-
3), the 1st, 2 corner cube mirrors (7-1,7-2), acousto-optic modulator (8), RF driving source (9), electric rotary table (10), four/
One wave plate (11), photodetector (12), the 1st, 2 cables (13-1,13-2) and feedback module (14)；
Its position and connected relation are:
1st half wave plate (1-1), the 2nd polarization splitting prism (2-1), Faraday polarization apparatus (3) and Glan-Taylor prism
(4) it is arranged successively and interacts, wherein the transmission polarization direction of the 2nd polarization splitting prism (2-1) and Glan-Taylor prism (4) transmit
Polarization direction differs 45 °, and it is consistent with 3 direction of rotation of Faraday polarization apparatus to change direction；
2nd half wave plate (1-2), the 2nd polarization splitting prism (2-2) and the first reflecting mirror (5-1) are arranged successively and interact,
The polarization axis direction of 2nd half wave plate (1-2) guarantees that incident light (a1) has maximum transmission；
It is 1st plano-convex lens (6-1), the 1st corner cube mirror (7-1), the 2nd plano-convex lens (6-2), acousto-optic modulator (8), the 3rd flat
Convex lens (6-3), quarter-wave plate (11), the 2nd corner cube mirror (7-2) and the 2nd reflecting mirror (5-2) are arranged successively and hand over
Mutually；
2nd plano-convex lens (6-2) are identical as the 3rd plano-convex lens (6-3) focal length and focal length less than the 1st plano-convex lens (6-1)；The
1 corner cube mirror (7-1) and the left side focal plane of focal plane on the right side of the 1st plano-convex lens (6-1) and the 2nd plano-convex lens (6-2) are equal
It is overlapped；Acousto-optic modulator (8) germ nucleus and the 2nd plano-convex lens (6-2) right focus and the 3rd plano-convex lens (6-3) left focus weight
It closes；2nd corner cube mirror (7-2), the 2nd reflecting mirror (5-2) are overlapped with focal plane on the right side of the 3rd plano-convex lens (6-3)；Four/
One wave plate (11) is located in front of the second reflecting mirror (5-2)；
Above-mentioned all devices will collectively form a 12 journey acousto-optic frequency translation systems；
RF driving source (9), electric rotary table (10) are connect with acousto-optic modulator (8), constitute synchronous frequency sweep and angle controls
Module；
3rd half wave plate (1-3), the 3rd polarization splitting prism (2-3), photodetector (12), the 1st cable (13-1),
Feedback module (14), the 2nd cable (13-2) and RF driving source (9) are sequentially communicated and interact, and constitute power stability module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920460295.9U CN209709375U (en) | 2019-04-08 | 2019-04-08 | A kind of acousto-optic frequency-sweeping apparatus based on multi-way acousto-optic frequency translation technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920460295.9U CN209709375U (en) | 2019-04-08 | 2019-04-08 | A kind of acousto-optic frequency-sweeping apparatus based on multi-way acousto-optic frequency translation technology |
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| CN209709375U true CN209709375U (en) | 2019-11-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110018581A (en) * | 2019-04-08 | 2019-07-16 | 中国科学院武汉物理与数学研究所 | Acousto-optic scanning system based on multi-way acousto-optic frequency translation technology |
| CN114755907A (en) * | 2022-05-30 | 2022-07-15 | 中国科学院国家授时中心 | Device for realizing Frokay design in optical lattice by utilizing frequency modulation |
-
2019
- 2019-04-08 CN CN201920460295.9U patent/CN209709375U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110018581A (en) * | 2019-04-08 | 2019-07-16 | 中国科学院武汉物理与数学研究所 | Acousto-optic scanning system based on multi-way acousto-optic frequency translation technology |
| CN110018581B (en) * | 2019-04-08 | 2023-05-30 | 中国科学院武汉物理与数学研究所 | Acousto-optic frequency sweep system based on multi Cheng Shengguang frequency shift technology |
| CN114755907A (en) * | 2022-05-30 | 2022-07-15 | 中国科学院国家授时中心 | Device for realizing Frokay design in optical lattice by utilizing frequency modulation |
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