CN105914574A - Series frequency shift and three-mirror circular cavity internal dispersion compensation double-frequency comb generation method and device - Google Patents
Series frequency shift and three-mirror circular cavity internal dispersion compensation double-frequency comb generation method and device Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
- H01S3/1068—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using an acousto-optical device
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
- H01S3/0085—Modulating the output, i.e. the laser beam is modulated outside the laser cavity
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/081—Construction or shape of optical resonators or components thereof comprising three or more reflectors
- H01S3/083—Ring lasers
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- Optics & Photonics (AREA)
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Abstract
Provided are a series frequency shift and three-mirror circular cavity internal dispersion compensation double-frequency comb generation method and device, belonging to the ultrafast laser technical field. The method utilizes a frequency stabilized laser to provide source laser, generates a double optical frequency comb through two serially configured acousto-optic frequency shifters and two three-mirror circular cavities having electrooptical modulators therein, utilizes an dispersion compensation device in a cavity to extend the spectrum range of the generated frequency comb, employs two dual channel signal generators based on a same frequency standard to respectively provide modulation driving signals for the acousto-optic frequency shifters and the electrooptical modulators, and obtains a heterodyning double optical frequency comb having each comb heterodyning interference signal frequency distributed in an arithmetic progression. The invention also provides a series frequency shift and three-mirror circular cavity internal dispersion compensation double-frequency comb generation device. The heterodyning double optical frequency comb generated by the method possesses the characteristics of large spectrum range and sound frequency invariance; the heterodyning double optical frequency comb generating device has the advantages of high system integrated level, simple structure and low cost.
Description
Technical field
The invention belongs to ultrafast laser technique, relate generally to a kind of based on tandem dual-acousto-optic shift and three mirror annular chamber intracavity modulations
And the double optical frequency com of heterodyne of dispersion compensation sum generates method and apparatus.
Background technology
Show as ultrashort laser pulse sequence in time domain owing to optical frequency com has, to show as pectination on frequency domain the most
The characteristic of spectrum so that it is obtain in fields such as pinpoint spectroscopic analysis, absolute distance measurement, optical maser wavelength calibration, time frequency signal transmission
Arrive extensive application.
In recent years, in pinpoint spectroscopic analysis with absolute distance measurement field, measuring method based on the double optical frequency com of heterodyne is not
Disconnected development, has become as its each important research direction in field.Frequency domain aspect, each comb between the double optical frequency com of heterodyne
The heterodyne interference signal of tooth is arithmetic progression distribution, it is simple to the interferometric information of high-precision each comb of extraction.Time domain aspect,
The time interval cyclically-varying of each pulse between the double optical frequency com of heterodyne, its measurement effect is consistent with pulse scanning mode,
Can significantly save the measurement time.
What the double optical frequency com of existing heterodyne generated that method is based primarily upon two set femtosecond frequency comb systems locks control mutually.But the party
In method, the frequency invariances of two set femtosecond frequency comb systems are limited by mutually locking control accuracy, simultaneously its realize apparatus structure complexity,
Cost is high, constrains and based on the double optical frequency com measuring method of heterodyne in pinpoint spectroscopic analysis and absolute distance measurement field enters one
Step development.It addition, the spectral region of optical frequency com has decisive role to the measurement scope in above-mentioned field with precision.Therefore,
Need heterodyne double optical frequency com generation method and apparatus of a kind of big spectral region, altofrequency concordance, low cost badly.
Summary of the invention
The purpose of the present invention is aiming at the problem that above-mentioned prior art exists, and proposes color in one series connection shift frequency and three mirror annular chambers
Dissipate and compensate double frequency comb generation method and apparatus, reach to realize the double optics of heterodyne of big spectral region, altofrequency concordance, low cost
The purpose that frequency comb generates.
The purpose of the present invention is achieved through the following technical solutions:
A kind of series connection shift frequency and three mirror annular chamber internal dispersions compensate double frequency comb generation method, and the method step is as follows:
The emergent light frequency of (1) frequency stabilized carbon dioxide laser is v0, described emergent light inputs primary acousto-optic after optical isolator and adjusts
Frequency shifter processed, the modulating frequency value of described primary acousto-optic modulation frequency shifter is f1, the 0 of described primary acousto-optic modulation frequency shifter output
Level and+1 grade of shift frequency diffraction light frequency values are respectively v0And v0+f1,+1 grade of shift frequency of described primary acousto-optic modulation frequency shifter output spreads out
Penetrating light one three mirror annular chamber of input, 0 grade of secondary acousto-optic of shift frequency diffraction light input of described primary acousto-optic modulation frequency shifter output is adjusted
Frequency shifter processed, the modulating frequency value of described secondary acousto-optic modulation frequency shifter is f2,+the 1 of described secondary acousto-optic modulation frequency shifter output
Level shift frequency diffraction light frequency values is v0+f2,+1 grade of shift frequency diffraction light of described secondary acousto-optic modulation frequency shifter output inputs another
Three mirror annular chambers, the modulating frequency of the electrooptic modulator each contained in two three mirror annular chambers is respectively f3And f4, two
The dispersion compensation device each contained in three mirror annular chambers compensates laser dispersion in two three mirror annular chambers respectively, described
Two three mirror annular chambers export a branch of optical frequency com respectively, and the two-beam frequency comb of output constitutes the double optical frequency com of heterodyne；
(2) in the double optical frequency com of above-mentioned heterodyne, the center comb frequency of two-beam frequency comb is respectively v0+f1And v0+f2, institute
The center comb frequency-splitting stating two-beam frequency comb is | f1-f2|, the center comb frequency offset frequency of described two-beam frequency comb
Locking；
(3) in the double optical frequency com of above-mentioned heterodyne, the repetition rate of two-beam frequency comb is respectively f3And f4, described two-beam
The repetition rate difference of frequency comb is | f3-f4|, the repetition rate alien frequencies locking of described two-beam frequency comb；
(4) in the double optical frequency com of above-mentioned heterodyne, the frequency of two-beam frequency comb the i-th rank comb is expressed as v0+f1+i×f3
And v0+f2+i×f4, the heterodyne interference signal frequency of described two-beam frequency comb the i-th rank comb is | f1-f2|+i×|f3-f4|,
The center comb frequency-splitting of described two-beam frequency comb | f1-f2| with repetition rate difference | f3-f4| meet | f1-f2|>|i|×|f3
-f4|, the heterodyne interference signal frequency of described two-beam frequency comb the i-th rank comb is arithmetic progression；
(5) modulated signal of the primary acousto-optic modulation frequency shifter of arranged in series and secondary acousto-optic modulation frequency shifter is by same the dual pathways
Signal generator provides, and the modulated signal of above-mentioned two electrooptic modulator is provided by another double-channel signal generator, and two double
The reference frequency signal of channel signal generator is provided by same reference frequency oscillator.
A kind of series connection shift frequency and three mirror annular chamber internal dispersions compensate double frequency comb generating means, depend on the emitting light path of frequency stabilized carbon dioxide laser
Secondary configuration optical isolator and acousto-optic modulation frequency shifter A；+ 1 grade of shift frequency optical diffraction of described acousto-optic modulation frequency shifter A is joined
Put reflecting mirror A, the reflected light path of reflecting mirror A configures three mirror annular chamber A, described three mirror annular chamber A by the first chamber mirror a,
Second chamber mirror a, the 3rd chamber mirror a and electrooptic modulator A composition, the reflection light of reflecting mirror A pass sequentially through the first chamber mirror a, the
Two chamber mirror a, the 3rd chamber mirror a are arranged on the reflected light path of the second chamber mirror a, and the first chamber mirror a is arranged in the reflection of the 3rd chamber mirror a
In light path, the first chamber mirror a makes the reflection light from reflecting mirror A overlap with the reflection light light path from the 3rd chamber mirror a, described electricity
Photomodulator A is arranged in the first chamber mirror a, the second chamber mirror a, the 3rd chamber mirror a between any two chamber mirrors in light path；At three mirror rings
Shape chamber A internal configuration dispersion compensation device A, described dispersion compensation device A be arranged in the first chamber mirror a, the second chamber mirror a, the
In three chamber mirror a between any two chamber mirrors in light path；The transmitted light path of described acousto-optic modulation frequency shifter A configures acousto-optic modulation move
Frequently device B, configures reflecting mirror B, in the reflection of reflecting mirror B on+1 grade of shift frequency optical diffraction of described acousto-optic modulation frequency shifter B
Configuring three mirror annular chamber B in light path, described three mirror annular chamber B are by the first chamber mirror b, the second chamber mirror b, the 3rd chamber mirror b and electric light
Manipulator B forms, and the reflection light of reflecting mirror B passes sequentially through the first chamber mirror b, the second chamber mirror b, and the 3rd chamber mirror b is arranged in the
On the reflected light path of two chamber mirror b, the first chamber mirror b is arranged on the reflected light path of the 3rd chamber mirror b, and the first chamber mirror b makes reflexive
Penetrate mirror B reflection light overlap with the reflection light light path from the 3rd chamber mirror b, described electrooptic modulator B be arranged in the first chamber mirror b,
In second chamber mirror b, the 3rd chamber mirror b between any two chamber mirrors in light path；Dispersion compensation device B is configured in three mirror annular chamber B,
Described dispersion compensation device B is arranged in the first chamber mirror b, the second chamber mirror b, the 3rd chamber mirror b between any two chamber mirrors in light path；
Reference frequency oscillator is connected respectively with double-channel signal generator A, double-channel signal generator B, and described double-channel signal is sent out
Raw device A is connected respectively with acousto-optic modulation frequency shifter A, acousto-optic modulation frequency shifter B, described double-channel signal generator B and electric light
Manipulator A, electrooptic modulator B connect respectively.
The invention have the characteristics that and good result:
(1), compared with optical frequency coms double with existing heterodyne generate method, the present invention utilizes a frequency stabilized carbon dioxide laser for the double light of heterodyne
The generation process learning frequency comb provides source laser, and the double optical frequency com frequency invariance of the heterodyne generated is good.
(2) utilize three mirror annular chamber intracavity modulation formula optical frequency coms to generate method and apparatus and simplify the double optical frequency com of heterodyne
The system structure of generating means, reduces and realizes cost.
(3) tandem dual-acousto-optic shift method and apparatus coordinates synchronous pilot frequency actuation techniques to achieve in the double optical frequency com of heterodyne
The rrequency-offset-lock of heart comb frequency.
(4) intra-cavity phase modulator approach in Crossed Circle chamber coordinates synchronous pilot frequency actuation techniques to achieve the double optical frequency of heterodyne with device
The alien frequencies of comb repetition rate mutually locks.
(5) tandem dual-acousto-optic shift method and apparatus greatly improves the utilization rate of source laser.
(6) three mirror ring cavity structures make the unidirectional electrooptic modulator by intracavity of the laser in resonator cavity, effectively prevent electric light from adjusting
Burning of device processed, it is allowed to export the double optical frequency com of powerful heterodyne.
(7) in resonator, configure dispersion compensation device, be completely eliminated the double optical frequency com of heterodyne in theory in generation chamber
Dispersion, it is achieved maximum spectral region output.
Accompanying drawing explanation
Fig. 1 compensates double frequency comb generating means structural representation for series connection shift frequency and three mirror annular chamber internal dispersions.
Piece number explanation in figure: 1 frequency stabilized carbon dioxide laser, 2 optical isolators, 3 acousto-optic modulation frequency shifter A, 4 acousto-optic modulation frequency shifters
B, 5 reflecting mirror A, 6 reflecting mirror B, 7 three mirror annular chamber A, 8 first chamber mirror a, 9 second chamber mirror a, 10 the 3rd chamber mirror a,
11 3 mirror annular chamber B, 12 first chamber mirror b, 13 second chamber mirror b, 14 the 3rd chamber mirror b, 15 electrooptic modulator A, 16 electric light
Manipulator B, 17 dispersion compensation device A, 18 dispersion compensation device B, 19 reference frequency oscillators, 20 double-channel signals are sent out
Raw device A, 21 double-channel signal generator B.
Detailed description of the invention
Below in conjunction with the accompanying drawings the specific embodiment of the invention is described in further detail.
A kind of series connection shift frequency and three mirror annular chamber internal dispersions compensate double frequency comb generating means, on the emitting light path of frequency stabilized carbon dioxide laser 1
Configuration optical isolator 2 and acousto-optic modulation frequency shifter A3 successively；+ 1 grade of shift frequency diffraction light at described acousto-optic modulation frequency shifter A3
On road configure reflecting mirror A5, the reflected light path of reflecting mirror A5 configures three mirror annular chamber A7, described three mirror annular chamber A7 by
First chamber mirror a8, the second chamber mirror a9, the 3rd chamber mirror a10 and electrooptic modulator A15 composition, the reflection light of reflecting mirror A5 is successively
By the first chamber mirror a8, the second chamber mirror a9, the 3rd chamber mirror a10 is arranged on the reflected light path of the second chamber mirror a9, the first chamber mirror
A8 is arranged on the reflected light path of the 3rd chamber mirror a10, and the first chamber mirror a8 makes from the reflection light of reflecting mirror A5 and from the 3rd chamber
The reflection light light path of mirror a10 overlaps, and described electrooptic modulator A15 is arranged in the first chamber mirror a8, the second chamber mirror a9, the 3rd chamber mirror
In a10 between any two chamber mirrors in light path；Dispersion compensation device A17, described dispersion compensation is configured inside three mirror annular chamber A7
Device A17 is arranged in the first chamber mirror a8, the second chamber mirror a9, the 3rd chamber mirror a10 between any two chamber mirrors in light path；Described
Acousto-optic modulation frequency shifter B4 is configured, at+the 1 of described acousto-optic modulation frequency shifter B4 on the transmitted light path of acousto-optic modulation frequency shifter A3
Configure reflecting mirror B6 on level shift frequency optical diffraction, the reflected light path of reflecting mirror B6 configures three mirror annular chamber B11, described three
Mirror annular chamber B11 is made up of the first chamber mirror b12, the second chamber mirror b13, the 3rd chamber mirror b14 and electrooptic modulator B16, reflection
The reflection light of mirror B6 passes sequentially through the first chamber mirror b12, the second chamber mirror b13, and the 3rd chamber mirror b14 is arranged in the second chamber mirror b13's
On reflected light path, the first chamber mirror b12 is arranged on the reflected light path of the 3rd chamber mirror b14, and the first chamber mirror b12 makes from reflecting mirror
The reflection light of B6 overlaps with the reflection light light path from the 3rd chamber mirror b14, and described electrooptic modulator B16 is arranged in the first chamber mirror
In b12, the second chamber mirror b13, the 3rd chamber mirror b14 between any two chamber mirrors in light path；Dispersion is configured in three mirror annular chamber B11
Compensating device B18, described dispersion compensation device B18 is arranged in the first chamber mirror b12, the second chamber mirror b13, the 3rd chamber mirror b14
In between any two chamber mirrors in light path；Reference frequency oscillator 19 and double-channel signal generator A20, double-channel signal generator
B21 connects respectively, and described double-channel signal generator A20 is with acousto-optic modulation frequency shifter A3, acousto-optic modulation frequency shifter B4 respectively
Connecting, described double-channel signal generator B21 is connected respectively with electrooptic modulator A15, electrooptic modulator B16.
The first chamber mirror a8 of three described mirror annular chamber A7, the second chamber mirror a9, the 3rd chamber mirror a10 and three mirror annular chamber B11's
First chamber mirror b12, the second chamber mirror b13, the 3rd chamber mirror b14 include plane mirror, concave mirror and convex mirror chamber mirror type.
Described dispersion compensation device A17 and dispersion compensation device B18 include grating to, prism to and dispersion compensating fiber.
Described electrooptic modulator A15 and electrooptic modulator B16 includes electro-optic intensity modulator and electro-optic phase modulator.
Described reference frequency oscillator 19 includes atomic clock, crystal oscillator, ceramic resonator, electronic oscillator.
A kind of series connection shift frequency and three mirror annular chamber internal dispersions compensate double frequency comb generation method, and the method step is as follows:
The emergent light frequency of (1) frequency stabilized carbon dioxide laser is v0, described emergent light inputs primary acousto-optic after optical isolator and adjusts
Frequency shifter processed, the modulating frequency value of described primary acousto-optic modulation frequency shifter is f1, the 0 of described primary acousto-optic modulation frequency shifter output
Level and+1 grade of shift frequency diffraction light frequency values are respectively v0And v0+f1,+1 grade of shift frequency of described primary acousto-optic modulation frequency shifter output spreads out
Penetrating light one three mirror annular chamber of input, 0 grade of secondary acousto-optic of shift frequency diffraction light input of described primary acousto-optic modulation frequency shifter output is adjusted
Frequency shifter processed, the modulating frequency value of described secondary acousto-optic modulation frequency shifter is f2,+the 1 of described secondary acousto-optic modulation frequency shifter output
Level shift frequency diffraction light frequency values is v0+f2,+1 grade of shift frequency diffraction light of described secondary acousto-optic modulation frequency shifter output inputs another
Three mirror annular chambers, the modulating frequency of the electrooptic modulator each contained in two three mirror annular chambers is respectively f3And f4, two
The dispersion compensation device each contained in three mirror annular chambers compensates laser dispersion in two three mirror annular chambers respectively, described
Two three mirror annular chambers export a branch of optical frequency com respectively, and the two-beam frequency comb of output constitutes the double optical frequency com of heterodyne；
(2) in the double optical frequency com of above-mentioned heterodyne, the center comb frequency of two-beam frequency comb is respectively v0+f1And v0+f2, institute
The center comb frequency-splitting stating two-beam frequency comb is | f1-f2|, the center comb frequency offset frequency of described two-beam frequency comb
Locking；
(3) in the double optical frequency com of above-mentioned heterodyne, the repetition rate of two-beam frequency comb is respectively f3And f4, described two-beam
The repetition rate difference of frequency comb is | f3-f4|, the repetition rate alien frequencies locking of described two-beam frequency comb；
(4) in the double optical frequency com of above-mentioned heterodyne, the frequency of two-beam frequency comb the i-th rank comb is expressed as v0+f1+i×f3
And v0+f2+i×f4, the heterodyne interference signal frequency of described two-beam frequency comb the i-th rank comb is | f1-f2|+i×|f3-f4|,
The center comb frequency-splitting of described two-beam frequency comb | f1-f2| with repetition rate difference | f3-f4| meet | f1-f2|>|i|×|f3
-f4|, the heterodyne interference signal frequency of described two-beam frequency comb the i-th rank comb is arithmetic progression；
(5) modulated signal of the primary acousto-optic modulation frequency shifter of arranged in series and secondary acousto-optic modulation frequency shifter is by same the dual pathways
Signal generator provides, and the modulated signal of above-mentioned two electrooptic modulator is provided by another double-channel signal generator, and two double
The reference frequency signal of channel signal generator is provided by same reference frequency oscillator.
Other levels time shift frequency diffraction light of described primary acousto-optic modulation frequency shifter and secondary acousto-optic modulation frequency shifter equally realizes
State step.
Claims (7)
1. a series connection shift frequency and three mirror annular chamber internal dispersions compensate double frequency comb generation method, it is characterised in that: described method step
As follows:
The emergent light frequency of (1) frequency stabilized carbon dioxide laser is v0, described emergent light inputs primary acousto-optic after optical isolator and adjusts
Frequency shifter processed, the modulating frequency value of described primary acousto-optic modulation frequency shifter is f1, the 0 of described primary acousto-optic modulation frequency shifter output
Level and+1 grade of shift frequency diffraction light frequency values are respectively v0And v0+f1,+1 grade of shift frequency of described primary acousto-optic modulation frequency shifter output spreads out
Penetrating light one three mirror annular chamber of input, 0 grade of secondary acousto-optic of shift frequency diffraction light input of described primary acousto-optic modulation frequency shifter output is adjusted
Frequency shifter processed, the modulating frequency value of described secondary acousto-optic modulation frequency shifter is f2,+the 1 of described secondary acousto-optic modulation frequency shifter output
Level shift frequency diffraction light frequency values is v0+f2,+1 grade of shift frequency diffraction light of described secondary acousto-optic modulation frequency shifter output inputs another
Three mirror annular chambers, the modulating frequency of the electrooptic modulator each contained in two three mirror annular chambers is respectively f3And f4, two
The dispersion compensation device each contained in three mirror annular chambers compensates laser dispersion in two three mirror annular chambers respectively, described
Two three mirror annular chambers export a branch of optical frequency com respectively, and the two-beam frequency comb of output constitutes the double optical frequency com of heterodyne；
(2) in the double optical frequency com of above-mentioned heterodyne, the center comb frequency of two-beam frequency comb is respectively v0+f1And v0+f2, institute
The center comb frequency-splitting stating two-beam frequency comb is | f1-f2|, the center comb frequency offset frequency of described two-beam frequency comb
Locking；
(3) in the double optical frequency com of above-mentioned heterodyne, the repetition rate of two-beam frequency comb is respectively f3And f4, described two-beam
The repetition rate difference of frequency comb is | f3-f4|, the repetition rate alien frequencies locking of described two-beam frequency comb；
(4) in the double optical frequency com of above-mentioned heterodyne, the frequency of two-beam frequency comb the i-th rank comb is expressed as v0+f1+i×f3
And v0+f2+i×f4, the heterodyne interference signal frequency of described two-beam frequency comb the i-th rank comb is | f1-f2+i×(f3-f4) |,
The center comb frequency-splitting of described two-beam frequency comb | f1-f2| with repetition rate difference | f3-f4| meet | f1-f2|>|i|×|f3
-f4|, the heterodyne interference signal frequency of described two-beam frequency comb the i-th rank comb is arithmetic progression；
(5) modulated signal of the primary acousto-optic modulation frequency shifter of arranged in series and secondary acousto-optic modulation frequency shifter is by same the dual pathways
Signal generator provides, and the modulated signal of above-mentioned two electrooptic modulator is provided by another double-channel signal generator, and two double
The reference frequency signal of channel signal generator is provided by same reference frequency oscillator.
Series connection shift frequency the most according to claim 1 and three mirror annular chamber internal dispersions compensate double frequency comb generation method, and its feature exists
In: other levels time shift frequency diffraction light of described primary acousto-optic modulation frequency shifter and secondary acousto-optic modulation frequency shifter equally realizes
State step.
3. series connection shift frequency and three mirror annular chamber internal dispersions compensate a double frequency comb generating means, in the outgoing of frequency stabilized carbon dioxide laser (1)
Optical isolator (2) and acousto-optic modulation frequency shifter A (3) is configured successively in light path；It is characterized in that: move in described acousto-optic modulation
Frequently configure reflecting mirror A (5) on+1 grade of shift frequency optical diffraction of device A (3), the reflected light path of reflecting mirror A (5) configures
Three mirrors annular chamber A (7), described three mirrors annular chamber A (7) are by the first chamber mirror a (8), the second chamber mirror a (9), the 3rd chamber mirror a
(10) with electrooptic modulator A (15) form, the reflection light of reflecting mirror A (5) pass sequentially through the first chamber mirror a (8), second
Chamber mirror a (9), the 3rd chamber mirror a (10) is arranged on the reflected light path in the second chamber mirror a (9), the first chamber mirror a (8) configuration
On the reflected light path in the 3rd chamber mirror a (10), the first chamber mirror a (8) make from reflecting mirror A (5) reflection light with from the
The reflection light light path in three chambeies mirror a (10) overlaps, and described electrooptic modulator A (15) is arranged in the first chamber mirror a (8), the second chamber
In mirror a (9), the 3rd chamber mirror a (10) between any two chamber mirrors in light path；In the internal configuration dispersion of three mirrors annular chamber A (7)
Compensating device A (17), described dispersion compensation device A (17) be arranged in the first chamber mirror a (8), the second chamber mirror a (9),
In three chambeies mirror a (10) between any two chamber mirrors in light path；The transmitted light path of described acousto-optic modulation frequency shifter A (3) configures
Acousto-optic modulation frequency shifter B (4), configures reflecting mirror B on+1 grade of shift frequency optical diffraction of described acousto-optic modulation frequency shifter B (4)
(6), the reflected light path of reflecting mirror B (6) configures three mirrors annular chamber B (11), described three mirrors annular chamber B (11) by
First chamber mirror b (12), the second chamber mirror b (13), the 3rd chamber mirror b (14) and electrooptic modulator B (16) composition, reflecting mirror
The reflection light of B (6) passes sequentially through the first chamber mirror b (12), the second chamber mirror b (13), and the 3rd chamber mirror b (14) is arranged in second
On the reflected light path in chamber mirror b (13), the first chamber mirror b (12) is arranged on the reflected light path in the 3rd chamber mirror b (14), and first
Chamber mirror b (12) makes the reflection light from reflecting mirror B (6) overlap with the reflection light light path from the 3rd chamber mirror b (14), institute
State electrooptic modulator B (16) to be arranged in the first chamber mirror b (12), the second chamber mirror b (13), the 3rd chamber mirror b (14) arbitrarily
Between two chamber mirrors in light path；Dispersion compensation device B (18), described dispersion compensation device is configured in three mirrors annular chamber B (11)
B (18) is arranged in the first chamber mirror b (12), the second chamber mirror b (13), the 3rd chamber mirror b (14) light between any two chamber mirrors
Lu Shang；Reference frequency oscillator (19) is with double-channel signal generator A (20), double-channel signal generator B (21) respectively
Connect, described double-channel signal generator A (20) and acousto-optic modulation frequency shifter A (3), acousto-optic modulation frequency shifter B (4) point
Not connecting, described double-channel signal generator B (21) connects respectively with electrooptic modulator A (15), electrooptic modulator B (16)
Connect.
Series connection shift frequency the most according to claim 3 and three mirror annular chamber internal dispersions compensate double frequency comb generating means, and its feature exists
In: the first chamber mirror a (8) of three described mirrors annular chamber A (7), the second chamber mirror a (9), the 3rd chamber mirror a (10) and three mirrors
First chamber mirror b (12) of annular chamber B (11), the second chamber mirror b (13), the 3rd chamber mirror b (14) include plane mirror, concave surface
Mirror and convex mirror chamber mirror type.
Series connection shift frequency the most according to claim 3 and three mirror annular chamber internal dispersions compensate double frequency comb generating means, and its feature exists
In: described dispersion compensation device A (17) and dispersion compensation device B (18) include grating to, prism to and dispersion compensation
Optical fiber.
Series connection shift frequency the most according to claim 3 and three mirror annular chamber internal dispersions compensate double frequency comb generating means, and its feature exists
In: described electrooptic modulator A (15) and electrooptic modulator B (16) includes electro-optic intensity modulator and electric light phase-modulation
Device.
Series connection shift frequency the most according to claim 3 and three mirror annular chamber internal dispersions compensate double frequency comb generating means, and its feature exists
In: described reference frequency oscillator (19) includes atomic clock, crystal oscillator, ceramic resonator, electronic oscillator.
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| CN201610307844.XA CN105914574A (en) | 2016-05-11 | 2016-05-11 | Series frequency shift and three-mirror circular cavity internal dispersion compensation double-frequency comb generation method and device |
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| CN201610307844.XA CN105914574A (en) | 2016-05-11 | 2016-05-11 | Series frequency shift and three-mirror circular cavity internal dispersion compensation double-frequency comb generation method and device |
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