CN105823559A - Adaptive double optical comb spectral compensation signal extraction method - Google Patents
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Abstract
The invention discloses an adaptive double optical comb spectral compensation signal extraction method. The adaptive double optical comb spectral compensation signal extraction method is characterized in that Michelson interferometers and electricity beat frequency acquire adaptive double optical comb spectral compensation signals; the time domain time-delay and frequency domain selection mode is used; the Michelson interferometers are effectively used to detect the pre pulse and after pulse of certain time-delay, and extract the signals representing the self repetition rate jitter and carrier envelope phase jitter of single pulse laser; and at last, through the electricity frequency multiplication and frequency mixing process, the compensation signals representing the corresponding repetition rate jitter and the corresponding carrier envelope phase jitter of the two pulse lasers can be obtained, and the compensation signals can be directly used for adaptive double optical comb spectral measurement. Compared with the prior art, the adaptive double optical comb spectral compensation signal extraction method completely avoid the mode that two narrow line-width continuous lasers are required to introduce in the adaptive double optical comb spectrum to extract compensation signals, so that the compensation signals are slightly interfered by the continuous optical wavelength drifting and is stable and reliable, and the stability and reliability of the adaptive double optical comb spectral system can be further improved.
Description
Technical field
The present invention relates to technical field of photoelectric detection, a kind of self adaptation double light comb spectrally compensating method for extracting signal being based on Michelson's interferometer.
Background technology
Double light comb spectral technique, as the advanced subject of scientific research field in recent years, can improve the precision of spectrographic detection greatly.Double light comb spectrographic detection technology compares conventional art two improvement, and one is to use light comb to substitute conventional light source, and the frequency spectrum position as standard is more stable, and live width is narrower, and precision is higher；Another is to use two repetition rate the most discrepant light combs to measure simultaneously, combs as reference light for one, combs as exciting light for one, is similar to the main scale of slide gauge and secondary chi, is detected by frequency dislocation and beat frequency, improve the precision of frequency measurement further.The self adaptation grown up in the recent period double light comb spectral technique, use two narrow linewidth continuous wave lasers and two ultrashort pulse laser beat frequencies, it is mixed through oversampling circuit again, frequency multiplication, amplify, Filtering Processing, obtain the compensation signal characterizing two ultrashort pulse laser relatively heavy complex frequency shakes with the shake of relative carrier envelope phase, characterize the signal asynchronous-sampling during spectrographic detection of relatively heavy complex frequency shake, the signal characterizing the shake of relative carrier envelope phase is mixed for spectrum interference signal, the impact of shake is finally eliminated at signal processing stage, realize high accuracy spectrographic detection.
In current self adaptation double light comb spectroscopic system, compensate the source of signal from two narrow linewidth continuous wave lasers and the mutual optical beat of two ultrashort pulse lasers, due to ambient temperature, vibration change, the optical frequency of every narrow linewidth laser or ultrashort pulse laser can random drift in time, therefore, the mid frequency of optical beat signal also can random drift in time, and drift scope is the biggest, it is easy to the bandwidth beyond circuit filter, beat signal is caused to be lost, processing of circuit Module Fail, adaptive equalization system operation irregularity.For controlling narrow linewidth continuous wave laser and the optical beat signal drift scope of ultrashort pulse laser, can be by setting up feedback loop, the parameters such as the repetition rate by the regulation temperature of continuous wave laser, pump power or pulse laser, by both beat frequency drift controls within the bandwidth of subsequent conditioning circuit wave filter, but adaptive optical comb spectrum will necessarily be interfered by this degenerative compensation way, reduces the certainty of measurement of system.
The self adaptation of prior art double light comb spectroscopic system, it compensates signal extraction mode must be first by narrow linewidth continuous wave laser and ultrashort pulse laser optical beat, there is the major hidden danger that beat signal is lost, stability that the system that affects operates for a long time, reliability.
Summary of the invention
nullA kind of self adaptation double light comb spectrally compensating method for extracting signal provided for the deficiencies in the prior art is provided，Two independent Michelson's interferometers are used to measure the frequency jitter of two ultrashort pulse lasers respectively，Utilize the mode that time domain time delay and frequency domain select，Extract the signal characterizing two pulse laser relatively heavy complex frequency shakes with the shake of relative carrier envelope phase，Realize double light comb spectral measurement，Control without pulse laser being carried out the active of repetition rate or carrier envelope phase，Avoid narrow linewidth continuous light and the optical frequency drift of ultra-short pulse laser in tradition self adaptation double light comb spectrally compensating signal extraction mode，Ensure that beat signal exists steadily in the long term，Preferably resolve the compensation dropout problem that optical beat signal drift causes，System is simple，Easy to operate，Substantially increase the stability of self adaptation double light comb spectral measurement system.
nullThe object of the present invention is achieved like this: a kind of self adaptation double light comb spectrally compensating method for extracting signal，Including ultrashort pulse laser、Photodetector、Electricity frequency multiplication and filter unit and double light comb spectroscopic data processing unit，It is characterized in the frequency jitter using two independent Michelson's interferometers to measure two ultrashort pulse lasers respectively，Then the output light of two Michelson's interferometers is respectively enterd two optical beam-splitters，Output light is respectively coupled to four optical filters by two optical beam-splitters，Filtered four optical signals are detected by four photodetectors respectively，The optical signal of detection is equally divided into two-way output by each photodetector，One tunnel output light respectively enters one-level mixing and two grades of mixing successively with another road output light after electricity frequency multiplication and filter unit，Then the compensation signal that the optical signal after two grades of Frequency mixing processing combs spectrum as the double light of self adaptation is accessed double light comb spectroscopic data processing unit.
Described each photodetector the optical signal detected is equally divided into two-way be output as four photodetectors separately detect obtain 1., 2., 3. and 4. four optical signals, each optical signal is equally divided into two-way output, 1. and 2. two optical signals of two photodetector one tunnels outputs enter one-level mixing respectively after two electricity frequencys multiplication and filter unit, and 1. and 2. two optical signals of another road of two photodetectors output are directly entered one-level mixing respectively；3. and 4. two optical signals of another two photodetector one tunnels outputs enter the mixing of another one-level respectively after another two electricity frequency multiplication and filter unit, and 3. and 4. two optical signals of another another road of two photodetectors output are directly entered the mixing of another one-level respectively；1. and 3. optical signal is made the process of frequency multiplication of (p-1) times by two electricity frequencys multiplication in described four electricity frequencys multiplication and filter unit and filter unit respectively, 2. and 4. optical signal is made the process of frequency multiplication of p times by another two electricity frequency multiplication and filter unit respectively, respectively obtain 1. × (p-1), 2. × p, 3. the signal after × (p-1) and 4. × p tetra-frequency multiplication, by after frequency multiplication 1. × (p-1), 1. and the 2. optical signal of 2. × p and non-frequency multiplication enters one-level mixing, one-level mixing will 1. × and (p-1) and 1., 2. after × p is mixed with optical signal 2., respectively obtain the optical signal of 1.-2. and 2. × p-a1 × (p-1) two mixing；By after frequency multiplication 3. × (p-1), 4. × p and non-frequency multiplication are 3., 4. optical signal enters the mixing of another one-level, the mixing of another one-level will 3. × and (p-1) and 3., 4. after × p is mixed with optical signal 4., respectively obtain 3.-4. and 4. × p-3. × (p-1) two mixing optical signal, then will 1.-2., 2. × p-1. × (p-1) two mixing optical signal and 3.-4. and 4. × p-3. × (p-1) two be mixed optical signal respectively enter two grades of mixing, after two grades of Frequency mixing processing, respectively obtain (1.-2.)-(3.-4.) and [2. × p-is 1. × (p-1)]-[4. × p-is 3. × (p-1)] two access double light comb spectroscopic data processing unit as the compensation signal of self adaptation double light comb spectrum；The compensation signal of said two self adaptation double light comb spectrum is respectively (n-m) △ frWith △ f0+q△fr, wherein: △ frIt it is the relatively heavy complex frequency shake of two ultrashort pulse lasers；△f0It it is the relative carrier envelope phase shake of two ultrashort pulse lasers；P, n and m are positive integer.
Described Michelson's interferometer includes beam splitting chip or fiber coupler, two faraday's reflecting mirrors, the acousto-optic modulator that time delay crystal or time delay optical fiber and band drive, the output light of ultrashort pulse laser is divided into two-beam by power than for 1:1 through beam splitting chip or fiber coupler, light beam is directly over first faraday's reflecting mirror reflection, return to beam splitting chip or fiber coupler, another light beam first passes through time delay crystal or time delay optical fiber, the acousto-optic modulator driven through band again, eventually pass second faraday's reflecting mirror reflection, band drives successively acousto-optic modulator and time delay crystal or time delay optical fiber return to beam splitting chip or fiber coupler, two bundle reflection light synthesize a branch of from Michelson's interferometer output on beam splitting chip or fiber coupler.
Described optical beam-splitter is semi-transparent semi-reflecting eyeglass or the fiber coupler of 1:1 splitting ratio.
Described optical filter is that the laser allowing specific wavelength passes through, and completely cuts off narrow-band filtering eyeglass, fiber grating or optical fiber filter that other wavelength lasers pass through.
The present invention compared with prior art has the advantage that
(1), need not the optical beat of narrow linewidth continuous wave laser and continuous wave laser and pulse laser, therefore avoid the randomized jitter of optical beat signal, improve stability and the reliability of self adaptation double light comb spectrally compensating system.
(2), using two independent Michelson's interferometers to measure the frequency jitter of two ultrashort pulse lasers respectively, the most noiseless, detection noise is low.
(3), use the mode that frequency domain selects, at the beat signal of two different frequency window coherent detection pulses, by selecting frequency interval and window size flexibly, Frequency domain noise can be reduced, improve detectivity.
(4), Michelson's interferometer adds the acousto-optic modulator that band drives, by the mid frequency of the carrier deviation of beat signal to acousto-optic modulator, the noise near reduction zero-frequency.
(5), without additionally setting up the drift of negative-feedback circuit compensation signal, noise in electronic circuits will not be introduced, high-precision self adaptation double light comb spectrum can be realized.
(6) two pulse lasers and the adaptive control technology that, use free-running can be achieved with double light comb spectral measurement, it is not necessary to the active that pulse laser carries out repetition rate or carrier envelope phase controls, and system is simple, easy to operate.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is the example structure schematic diagram of space structure；
Fig. 3 is the example structure schematic diagram of optical fiber structure；
Fig. 4 is that the present invention specifically uses schematic diagram.
Detailed description of the invention
nullRefering to accompanying drawing 1，The present invention is by two ultrashort pulse lasers 1、Two Michelson's interferometers 2、Two optical beam-splitters 3、Four optical filters 4、Four photodetectors 5、Four electricity frequencys multiplication and filter unit 6、Two one-level mixing 7、One two grades mixing 8 and double light comb spectroscopic data processing unit 9 form the light path of two compensation signals，The output light of a described ultrashort pulse laser 1 incides Michelson's interferometer 2，The arm of interfering that in Michelson's interferometer 2, light path is longer comprises the acousto-optic modulator that a band drives，Modulating frequency is fa,The output light of Michelson's interferometer 2 is through an optical beam-splitter 3，It is respectively coupled to two optical filters 4，Two photodetectors 5 are used to measure filtered optical signalling respectively，2. 1. the signal detected be designated as and respectively，1. signal can be expressed as 2fa+△(nfr1+f01+2fa), n is positive integer, and its mid frequency is at 2fa, and the drift of signal includes the repetition rate drift △ f of ultrashort pulse laser 1r1, carrier envelope phase drift △ f01Drift △ f with acousto-optic modulator driving frequencya, 2. signal can be expressed as 2fa+△(mfr1+f01+2fa), m is positive integer, and its mid frequency is at 2fa, and the drift of signal includes the repetition rate drift of ultrashort pulse laser 1, carrier envelope phase drift and the drift of acousto-optic modulator driving frequency；The output light of another ultrashort pulse laser 1 incides another Michelson's interferometer 2, the arm of interfering that in another Michelson's interferometer 2, light path is longer comprises the acousto-optic modulator that a band drives, modulating frequency is fb, the output light of another Michelson's interferometer 2 is through another optical beam-splitter 2, it is respectively coupled to another two optical filter 4, using another two photodetector 4 to measure filtered optical signalling respectively, 3. the signal detected is designated as respectively and 4., 3. signal can be expressed as 2fb+△(nfr2+f02+2fb), n is positive integer, and its mid frequency is at 2fb, and the drift of signal includes the repetition rate drift △ f of another ultrashort pulse laser 1r2, carrier envelope phase drift △ f02Drift △ f with acousto-optic modulator driving frequencyb, 4. signal can be expressed as 2fb+△(mfr2+f02+2fb), m is positive integer, and its mid frequency is at 2fb, and the drift of signal includes the repetition rate drift of another ultrashort pulse laser 1, carrier envelope phase drift and the drift of acousto-optic modulator driving frequency；The signal that each photodetector 5 detects all is equally divided into two-way, one tunnel not frequency multiplication, one tunnel uses electricity frequency multiplication and filter unit 6 respectively above-mentioned 1., 2., 3. and 4. signal to be made process of frequency multiplication, 1. and 3. signal is made the process of frequency multiplication of (p-1) times, p is positive integer, 2. and 4. signal is made the process of frequency multiplication of p times, four electricity frequencys multiplication and filter unit 6 obtain the signal after four frequencys multiplication, are respectively 1. × (p-1), 2. × p, 3. × (p-1) and 4. × p；Use two one-levels mixing 7, the signal of the signal after frequency multiplication and non-frequency multiplication is made first order Frequency mixing processing, obtain the signal after four first order mixing, be respectively as follows: 1.-2.=(n-m) △ fr1, 2. × p-1. × (p-1)=2fa+△f01+(pgm-pgn+n)△fr1+2△fa, 3.-4.=(n-m) △ fr2, 4. × p-3. × (p-1)=2fb+△f02+(pgm-pgn+n)△fr2+2△fb；Signal after using two grades of mixing 8 to be mixed the first order makees second level Frequency mixing processing, obtains the signal after two second level mixing, be respectively as follows: (1.-2.)-3.-4.)=(n-m) △ fr, [2. × p-a × (p-1)]-[4. × p-is 3. × (p-1)]=2 (fa-fb)+△f0+(pgm-pgn+n)△fr+2△(fa-fb)；△f0+q△fr, above-mentioned two signal is substantially respectively equal to (n-m) △ fr, △ f0+q△fr, wherein n, m and q are positive integer, △ frIt is the relatively heavy complex frequency shake of two ultrashort pulse lasers 1, △ f0Being the relative carrier envelope phase shake of two ultrashort pulse lasers 1, the two signal just can be directly as the compensation signal of self adaptation double light comb spectrum.Wherein, Michelson's interferometer 2 includes the acousto-optic modulator that beam splitting chip or fiber coupler, first faraday's reflecting mirror, second faraday's reflecting mirror, time delay crystal or time delay optical fiber and band drive.The output light of described pulse laser 1 is through beam splitting chip or fiber coupler, it is divided into two-beam by the power ratio of 1:1, light beam is directly over first faraday's reflecting mirror and reflects back into beam splitting chip or fiber coupler, another light beam first passes through time delay crystal or time delay optical fiber, acousto-optic modulator and second faraday's reflecting mirror that band drives reflect, sequentially pass through acousto-optic modulator and time delay crystal or time delay optical fiber that band drives again, returning to beam splitting chip or fiber coupler, two bundle reflection light synthesize on beam splitting chip or fiber coupler and a branch of export from Michelson's interferometer 2.
The invention will be further described to comb spectrally compensating signal extraction system with the double light of self adaptation of space structure and optical fiber structure below.
Embodiment 1
Refering to accompanying drawing 2, the present invention is combed, by 31,32, four optical filters of 21,22, two optical beam-splitters of 11,12, two Michelson's interferometers of two pulse lasers, 51,52,53,54, four electricity frequencys multiplication of 41,42,43,44, four photodetectors and filter unit 71,72, two grades of frequency mixer 8 of 61,62,63,64, two one-level frequency mixers and double light, the extraction system that spectroscopic data processing unit 9 forms self adaptation double light comb spectrally compensating signal of space structure.
The output light of described ultrashort pulse laser 11 incides Michelson's interferometer 21, wherein, the acousto-optic modulator 214 that Michelson's interferometer 21 is driven by beam splitting chip 211, first faraday's reflecting mirror, 212, second faraday's reflecting mirror 215, time delay crystal 213 and band forms, and modulating frequency is fa.The output light of ultrashort pulse laser 11 is divided into two-beam through beam splitting chip 211 by the power ratio of 1:1, light beam is directly over first faraday's reflecting mirror 212 and reflects back into beam splitting chip 211, another light beam first passes through time delay crystal 213 and the acousto-optic modulator 214 of band driving, eventually pass second faraday's reflecting mirror 213 to reflect, returning to beam splitting chip 211 after sequentially passing through the acousto-optic modulator 214 and time delay crystal 213 that band drives again, two bundle reflection light synthesize on beam splitting chip 211 and a branch of export from Michelson's interferometer 21.
The output light of another ultrashort pulse laser 12 described incides another Michelson's interferometer 22, wherein, the acousto-optic modulator 224 that another Michelson's interferometer 22 is driven by beam splitting chip 221, first faraday's reflecting mirror, 222, second faraday's reflecting mirror 225, time delay crystal 223 and band forms, and modulating frequency is fa.The output light of another ultrashort pulse laser 12 is divided into two-beam through beam splitting chip 221 by the power ratio of 1:1, light beam is directly over first faraday's reflecting mirror 222 and reflects back into beam splitting chip 221, another light beam first passes through time delay crystal 223 and the acousto-optic modulator 224 of band driving, eventually pass second faraday's reflecting mirror 225 to reflect, returning to beam splitting chip 221 after sequentially passing through the acousto-optic modulator 224 and time delay crystal 223 that band drives again, two bundle reflection light synthesize on beam splitting chip 221 and a branch of export from another Michelson's interferometer 22.
The output light of described Michelson's interferometer 21 is respectively coupled to optical filter 41 and another optical filter 43 through optical beam-splitter 31, two photodetectors 51,53 are used to measure filtered optical signalling respectively, 1. the signal detected be designated as respectively, 2., 1. signal can be expressed as 2fa+△(nfr1+f01+2fa), n is positive integer, and its mid frequency is at 2fa, and the drift of signal includes the repetition rate drift △ f of ultrashort pulse laser 11r1, carrier envelope phase drift △ f01Drift △ f with acousto-optic modulator driving frequencya, 2. signal can be expressed as 2fa+△(mfr1+f01+2fa), m is positive integer, and its mid frequency is at 2fa, and the drift of signal includes the repetition rate drift of ultrashort pulse laser 11, carrier envelope phase drift and the drift of acousto-optic modulator driving frequency.
The output light of another Michelson's interferometer 22 described is respectively coupled to optical filter 42 and another optical filter 44 through optical beam-splitter 32, two photodetectors 52,54 are used to measure filtered optical signalling respectively, 3. the signal detected be designated as respectively, 4., 3. signal can be expressed as 2fb+△(nfr2+f02+2fb), n is positive integer, and its mid frequency is at 2fb, and the drift of signal includes the repetition rate drift △ f of ultrashort pulse laser 21r2, carrier envelope phase drift △ f02Drift △ f with acousto-optic modulator driving frequencyb, 4. signal can be expressed as 2fb+△(mfr2+f02+2fb), m is positive integer, and its mid frequency is at 2fb, and the drift of signal includes the repetition rate drift of another ultrashort pulse laser 12, carrier envelope phase drift and the drift of acousto-optic modulator driving frequency.
1., 2., the 3. and 4. signal detected by aforementioned four photodetector 51,52,53,54 is divided into two-way by each signal averaging, one tunnel not frequency multiplication, one tunnel uses four electricity frequencys multiplication and filter unit 61,62,63,64 respectively above-mentioned 1., 2., 3. and 4. signal to be made process of frequency multiplication, 1. and 3. signal is made (p-1) process of frequency multiplication again, p is positive integer, 2. and 4. signal is made the process of frequency multiplication of p times, obtain the signal after four frequencys multiplication, be respectively 1. × (p-1), 2. × p, 3. × (p-1), 4. × p；The signal using the signal after 71,72 pairs of frequencys multiplication of two one-level frequency mixers and non-frequency multiplication makees first order Frequency mixing processing, obtains the signal after the mixing of four first order, is respectively as follows: 1.-2.=(n-m) △ fr1, 2. × p-1. × (p-1)=2fa+△f01+(pgm-pgn+n)△fr1+2△fa, 3.-4.=(n-m) △ fr2, 4. × p-3. × (p-1)=2fb+△f02+(pgm-pgn+n)△fr2+2△fb；Using two grades of frequency mixers 8, the signal after being mixed the first order makees second level Frequency mixing processing, obtains the signal after two second level mixing, be respectively as follows: (1.-2.)-(3.-4.)=(n-m) △ fr, [2. × p-is 1. × (p-1)]-[4. × p-is 3. × (p-1)]=2 (fa-fb)+△f0+(pgm-pgn+n)△fr+2△(fa-fb)；△f0+q△fr, above-mentioned two signal is substantially respectively equal to (n-m) △ fr, △ f0+q△fr, wherein n, m, q are positive integer, △ frIt is the relatively heavy complex frequency shake of two ultrashort pulse lasers 11,12, △ f0Being the relative carrier envelope phase shake of two ultrashort pulse lasers 11,12, the two signal just can access double light comb spectroscopic data processing unit 9 directly as the compensation signal of self adaptation double light comb spectrum.
Embodiment 2
Refering to accompanying drawing 3, the present invention is combed, by 31,32, four optical filters of 21,22, two optical beam-splitters of 11,12, two Michelson's interferometers of two pulse lasers, 51,52,53,54, four electricity frequencys multiplication of 41,42,43,45, four photodetectors and filter unit 71,72 and two grades of frequency mixer 8 of 61,62,63,64, two one-level frequency mixers and double light, the extraction system that spectroscopic data processing unit 9 forms self adaptation double light comb spectrally compensating signal of optical fiber structure.
The output light of described ultrashort pulse laser 11 incides Michelson's interferometer 21, wherein, the acousto-optic modulator 214 that Michelson's interferometer is driven by fiber coupler 211, first faraday's reflecting mirror, 212, second faraday's reflecting mirror 215, time delay optical fiber 213 and band forms, and modulating frequency is fa.The output light of pulse laser 11 is divided into two-beam through fiber coupler 211 by the power ratio of 1:1, light beam is directly over first faraday's reflecting mirror 212 and reflects back into fiber coupler 211, another light beam first passes through time delay optical fiber 213, the acousto-optic modulator 214 driven through band again, eventually pass second faraday's reflecting mirror 215 to reflect, sequentially passing through acousto-optic modulator 214 that band drives again and time delay optical fiber 213 returns to fiber coupler 211, two bundle reflection light synthesize on fiber coupler 211 and a branch of export from Michelson's interferometer 21.
The output light of described Michelson's interferometer 21 is respectively coupled to optical filter 41 and optical filter 43 through optical beam-splitter 31, two photodetectors 51,53 are used to measure filtered optical signalling respectively, 1. the signal detected be designated as respectively, 2., 1. signal can be expressed as 2fa+△(nfr1+f01+2fa), n is positive integer, and its mid frequency is at 2fa, and the drift of signal includes the repetition rate drift △ f of ultrashort pulse laser 11r1, carrier envelope phase drift △ f01Drift △ f with acousto-optic modulator driving frequencya, 2. signal can be expressed as 2fa+△(mfr1+f01+2fa), m is positive integer, and its mid frequency is at 2fa, and the drift of signal includes the repetition rate drift of ultrashort pulse laser 11, carrier envelope phase drift and the drift of acousto-optic modulator driving frequency.
The output light of another ultrashort pulse laser 12 described incides Michelson's interferometer 22, wherein, the acousto-optic modulator 224 that Michelson's interferometer 22 is driven by fiber coupler 221, first faraday's reflecting mirror, 222, second faraday's reflecting mirror 225, time delay optical fiber 223 and band forms, and modulating frequency is fb.The output light of another ultrashort pulse laser 12 is divided into two-beam through fiber coupler 221 by the power ratio of 1:1, light beam is directly over first faraday's reflecting mirror 222 and reflects back into fiber coupler 221, another light beam first passes through time delay optical fiber 223, the acousto-optic modulator 224 driven through band again, eventually pass second faraday's reflecting mirror 225 to reflect, sequentially passing through acousto-optic modulator 224 that band drives again and time delay optical fiber 223 returns to fiber coupler 221, two bundle reflection light synthesize on fiber coupler 221 and a branch of export from Michelson's interferometer 22.
The output light of another Michelson's interferometer 22 described is respectively coupled to optical filter 42 and another optical filter 44 through optical beam-splitter 32, two photodetectors 52,54 are used to measure filtered optical signalling respectively, 3. the signal detected be designated as respectively, 4., 3. signal can be expressed as 2fb+△(nfr2+f02+2fb), n is positive integer, and its mid frequency is at 2fb, and the drift of signal includes the repetition rate drift △ f of ultrashort pulse laser 12r2, carrier envelope phase drift △ f02Drift △ f with acousto-optic modulator driving frequencyb, 4. signal can be expressed as 2fb+△(mfr2+f02+2fb), m is positive integer, and its mid frequency is at 2fb, and the drift of signal includes the repetition rate drift of ultrashort pulse laser 12, carrier envelope phase drift and the drift of acousto-optic modulator driving frequency.
1., 2., the 3. and 4. signal detected by aforementioned four photodetector 51,52,53,54 is divided into two-way by each signal averaging, one tunnel not frequency multiplication, one tunnel uses four electricity frequencys multiplication and filter unit 61,2,63,64 respectively above-mentioned 1., 2., 3. and 4. signal to be made process of frequency multiplication, 1. and 3. signal is made (p-1) process of frequency multiplication again, p is positive integer, 2. and 4. signal is made the process of frequency multiplication of p times, obtain the signal after four frequencys multiplication, be respectively 1. × (p-1), 2. × p, 3. × (p-1), 4. × p；The signal using the signal after 71,72 pairs of frequencys multiplication of two one-level frequency mixers and non-frequency multiplication makees first order Frequency mixing processing, obtains the signal after the mixing of four first order, is respectively as follows: 1.-2.=(n-m) △ fr1, 2. × p-1. × (p-1)=2fa+△f01+(pgm-pgn+n)△fr1+2△fa, 3.-4.=(n-m) △ fr2, 4. × p-3. × (p-1)=2fb+△f02+(pgm-pgn+n)△fr2+2△fb；Signal after using two grades of frequency mixers 8 to be mixed the first order makees second level Frequency mixing processing, obtains the signal after two second level mixing, be respectively as follows: (1.-2.)-(3.-4.)=(n-m) △ fr, [2. × p-is 1. × (p-1)]-[4. × p-is 3. × (p-1)]=2 (fa-fb)+△f0+(pgm-pgn+n)△fr+2△(fa-fb)；△f0+q△fr, above-mentioned two signal is substantially respectively equal to (n-m) △ fr, △ f0+q△fr, wherein n, m, q are positive integer, △ frIt is the relatively heavy complex frequency shake of two ultrashort pulse lasers 11,21, △ f0Being the relative carrier envelope phase shake of two ultrashort pulse lasers 11,21, the two signal just can access double light comb spectroscopic data processing unit 9 directly as the compensation signal of self adaptation double light comb spectrum.
Embodiment 3
Refering to accompanying drawing 4, the present invention is made up of two pulse lasers 11,12, sample cell 10,31,32, four optical filters of 21,22, two optical beam-splitters of 14, two Michelson's interferometers of interference signal detecting module, 51,52,53,54, four electricity frequencys multiplication of 41,42,43,44, four photodetectors and filter unit 71,72, two grades of frequency mixer 8 of 61,62,63,64, two one-level frequency mixers, self adaptation double light comb spectroscopic system data processing unit 9 and results of spectral measurements output module 13.
The output of described ultrashort pulse laser 11 is divided into two-way, one road is directly incident on sample cell 10, Michelson's interferometer 21 is incided on another road, wherein, the acousto-optic modulator 214 that Michelson's interferometer is driven by beam splitting chip 211, first faraday's reflecting mirror, 212, second faraday's reflecting mirror 215, time delay crystal 213 and band forms, and modulating frequency is fa.The output light of ultrashort pulse laser 11 is divided into two-beam through beam splitting chip 211 by the power ratio of 1:1, light beam is directly over first faraday's reflecting mirror 212 and reflects back into beam splitting chip 211, another light beam first passes through time delay crystal 213, the acousto-optic modulator 214 driven through band again, eventually pass second faraday's reflecting mirror 215 to reflect, the acousto-optic modulator 214 and the time delay crystal 213 that sequentially pass through band driving again return to beam splitting chip 211, two bundle reflection light synthesize a branch of on beam splitting chip 211, export from Michelson's interferometer 21.
The output light of another ultrashort pulse laser 12 described incides another Michelson's interferometer 22, wherein, the acousto-optic modulator 224 that another Michelson's interferometer 22 is driven by beam splitting chip 221, first faraday's reflecting mirror, 222, second faraday's reflecting mirror 225, time delay crystal 223 and band forms, and modulating frequency is fb.The output light of another ultrashort pulse laser 21 is divided into two-beam through beam splitting chip 221 by the power ratio of 1:1, light beam is directly over first faraday's reflecting mirror 222 and reflects back into beam splitting chip 221, another light beam first passes through time delay crystal 223, the acousto-optic modulator 224 driven through band again, eventually pass second faraday's reflecting mirror 225 to reflect, sequentially passing through acousto-optic modulator 224 that band drives again and time delay crystal 223 returns to beam splitting chip 221, two bundle reflection light synthesize on beam splitting chip 221 and a branch of export from another Michelson's interferometer 22.
The output light of described Michelson's interferometer 21 is respectively coupled to optical filter 41 and another optical filter 43 through optical beam-splitter 31, two photodetectors 51,53 are used to measure filtered optical signalling respectively, 1. the signal detected be designated as respectively, 2., 1. signal can be expressed as 2fa+△(nfr1+f01+2fa), n is positive integer, and its mid frequency is at 2fa, and the drift of signal includes the repetition rate drift △ f of ultrashort pulse laser 11r1, carrier envelope phase drift △ f01Drift △ f with acousto-optic modulator driving frequencya, 2. signal can be expressed as 2fa+△(mfr1+f01+2fa), m is positive integer, and its mid frequency is at 2fa, and the drift of signal includes the repetition rate drift of ultrashort pulse laser 11, carrier envelope phase drift and the drift of acousto-optic modulator driving frequency.
The output light of another Michelson's interferometer 22 described is respectively coupled to optical filter 42 and another optical filter 44 through optical beam-splitter 32, two photodetectors 52,54 are used to measure filtered optical signalling respectively, 3. the signal detected be designated as respectively, 4., 3. signal can be expressed as 2fb+△(nfr2+f02+2fb), n is positive integer, and its mid frequency is at 2fb, and the drift of signal includes the repetition rate drift △ f of ultrashort pulse laser 21r2, carrier envelope phase drift △ f02Drift △ f with acousto-optic modulator driving frequencyb, 4. signal can be expressed as 2fb+△(mfr2+f02+2fb), m is positive integer, and its mid frequency is at 2fb, and the drift of signal includes the repetition rate drift of another ultrashort pulse laser 12, carrier envelope phase drift and the drift of acousto-optic modulator driving frequency.
1., 2., the 3. and 4. signal detected by aforementioned four photodetector 51,52,53,54 is divided into two-way by each signal averaging, one tunnel not frequency multiplication, one tunnel uses four electricity frequencys multiplication and filter unit 61,2,63,64 respectively above-mentioned 1., 2., 3. and 4. signal to be made process of frequency multiplication, 1. and 3. signal is made (p-1) process of frequency multiplication again, p is positive integer, 2. and 4. signal is made the process of frequency multiplication of p times, obtain the signal after four frequencys multiplication, be respectively 1. × (p-1), 2. × p, 3. × (p-1), 4. × p；The signal using the signal after 71,72 pairs of frequencys multiplication of two one-level frequency mixers and non-frequency multiplication makees first order Frequency mixing processing, obtains the signal after the mixing of four first order, is respectively as follows: 1.-2.=(n-m) △ fr1, 2. × p-1. × (p-1)=2fa+△f01+(pgm-pgn+n)△fr1+2△fa, 3.-4.=(n-m) △ fr2, 4. × p-3. × (p-1)=2fb+△f02+(pgm-pgn+n)△fr2+2△fb；Signal after using two grades of frequency mixers 8 to be mixed the first order makees second level Frequency mixing processing, obtains the signal after two second level mixing, be respectively as follows: (1.-2.)-(3.-4.)=(n-m) △ fr, [2. × p-is 1. × (p-1)]-[4. × p-is 3. × (p-1)]=2 (fa-fb)+△f0+(pgm-pgn+n)△fr+2△(fa-fb)；△f0+q△fr, above-mentioned two signal is substantially respectively equal to (n-m) △ fr, △ f0+q△fr, wherein n, m, q are positive integer, △ frIt is the relatively heavy complex frequency shake of two ultrashort pulse lasers 11,12, △ f0Being the relative carrier envelope phase shake of two ultrashort pulse lasers 11,12, the two signal just can access double light comb spectroscopic data processing unit 9 directly as the compensation signal of self adaptation double light comb spectrum.
nullThe present invention is that sample so carries out spectral measurement: ultrashort pulse laser 11 and another ultrashort pulse laser 12 two-beam incide irradiation testing sample in sample cell 10，Then two bundle incident illuminations are combined into and a branch of incide interference signal detecting module 14，Interference signal detecting module 14 measures two ultrashort pulse lasers 11、The interference signal of 12，This interference signal is input to self adaptation double light comb spectroscopic system data processing unit 9，Self adaptation double light comb spectroscopic system data processing unit 9 has three input signals，These three input signals are characterized as two pulse lasers 11 respectively、The compensation signal of 12 relatively heavy complex frequency shakes、The compensation signal of carrier envelope phase shake and the interference signal after sample cell 10 relatively，Self adaptation double light comb spectroscopic system data processing unit 9 characterizes two pulse lasers 11 by using、The compensation signal of 12 relatively heavy complex frequency shakes is as asynchronous clock sampled signal，Use and characterize two pulse lasers 11、The compensation signal of 12 relative carrier envelope phase shakes and two pulse lasers 11、The method of the 12 interference signal mixing after sample cell 10，Eliminate two pulse lasers 11 respectively、12 relatively heavy complex frequencies shake the impact on spectral measurement with relative carrier envelope phase，Obtain high-precision results of spectral measurements，Finally by results of spectral measurements output module 13, measurement data is exported.
More than simply the present invention is further illustrated, and is not used to limit practicing of this patent, all implements for equivalence of the present invention, within being intended to be limited solely by the right of this patent.
Claims (5)
- null1. self adaptation double light comb spectrally compensating method for extracting signal，Including ultrashort pulse laser、Photodetector、Electricity frequency multiplication and filter unit and double light comb spectroscopic data processing unit，It is characterized in that the frequency jitter using two independent Michelson's interferometers to measure two ultrashort pulse lasers respectively，Then the output light of two Michelson's interferometers is respectively enterd two optical beam-splitters，Output light is respectively coupled to four optical filters by two optical beam-splitters，Filtered four optical signals are detected by four photodetectors respectively，The optical signal of detection is equally divided into two-way output by each photodetector，One tunnel output light respectively enters one-level mixing and two grades of mixing successively with another road output light after electricity frequency multiplication and filter unit，Then the compensation signal that the optical signal after two grades of Frequency mixing processing combs spectrum as the double light of self adaptation is accessed double light comb spectroscopic data processing unit.
- Self adaptation double light comb spectrally compensating method for extracting signal the most according to claim 1, it is characterized in that described each photodetector the optical signal detected is equally divided into two-way be output as four photodetectors separately detect obtain 1., 2., 3. and 4. four optical signals, each optical signal is equally divided into two-way output, 1. and 2. two optical signals of two photodetector one tunnels outputs enter one-level mixing respectively after two electricity frequencys multiplication and filter unit, and 1. and 2. two optical signals of another road of two photodetectors output are directly entered one-level mixing respectively；3. and 4. two optical signals of another two photodetector one tunnels outputs enter the mixing of another one-level respectively after another two electricity frequency multiplication and filter unit, and 3. and 4. two optical signals of another another road of two photodetectors output are directly entered the mixing of another one-level respectively；1. and 3. optical signal is made the process of frequency multiplication of (p-1) times by two electricity frequencys multiplication in described four electricity frequencys multiplication and filter unit and filter unit respectively, 2. and 4. optical signal is made the process of frequency multiplication of p times by another two electricity frequency multiplication and filter unit respectively, respectively obtain 1. × (p-1), 2. × p, 3. the signal after × (p-1) and 4. × p tetra-frequency multiplication, by after frequency multiplication 1. × (p-1), 1. and the 2. optical signal of 2. × p and non-frequency multiplication enters one-level mixing, one-level mixing will 1. × and (p-1) and 1., 2. after × p is mixed with optical signal 2., respectively obtain the optical signal of 1.-2. and 2. × p-a1 × (p-1) two mixing；By after frequency multiplication 3. × (p-1), 4. × p and non-frequency multiplication are 3., 4. optical signal enters the mixing of another one-level, the mixing of another one-level will 3. × and (p-1) and 3., 4. after × p is mixed with optical signal 4., respectively obtain 3.-4. and 4. × p-3. × (p-1) two mixing optical signal, then will 1.-2., 2. × p-1. × (p-1) two mixing optical signal and 3.-4. and 4. × p-3. × (p-1) two be mixed optical signal respectively enter two grades of mixing, after two grades of Frequency mixing processing, respectively obtain (1.-2.)-(3.-4.) and [2. × p-is 1. × (p-1)]-[4. × p-is 3. × (p-1)] two access double light comb spectroscopic data processing unit as the compensation signal of self adaptation double light comb spectrum；The compensation signal of said two self adaptation double light comb spectrum is respectively (n-m) △ frWith △ f0+q△fr, wherein: △ frIt it is the relatively heavy complex frequency shake of two ultrashort pulse lasers；△f0It it is the relative carrier envelope phase shake of two ultrashort pulse lasers；P, n and m are positive integer.
- nullSelf adaptation double light comb spectrally compensating method for extracting signal the most according to claim 1，It is characterized in that described Michelson's interferometer includes beam splitting chip or fiber coupler、Two faraday's reflecting mirrors、The acousto-optic modulator that time delay crystal or time delay optical fiber and band drive，The output light of ultrashort pulse laser is divided into two-beam by power than for 1:1 through beam splitting chip or fiber coupler，Light beam is directly over first faraday's reflecting mirror reflection，Return to beam splitting chip or fiber coupler，Another light beam first passes through time delay crystal or time delay optical fiber，The acousto-optic modulator driven through band again，Eventually pass second faraday's reflecting mirror reflection，Band drives successively acousto-optic modulator and time delay crystal or time delay optical fiber return to beam splitting chip or fiber coupler，Two bundle reflection light synthesize a branch of from Michelson's interferometer output on beam splitting chip or fiber coupler.
- Self adaptation double light comb spectrally compensating method for extracting signal the most according to claim 1, it is characterised in that described optical beam-splitter is semi-transparent semi-reflecting eyeglass or the fiber coupler of 1:1 splitting ratio.
- Self adaptation double light comb spectrally compensating method for extracting signal the most according to claim 1, it is characterised in that described optical filter is that the laser allowing specific wavelength passes through, and completely cuts off narrow-band filtering eyeglass, fiber grating or optical fiber filter that other wavelength lasers pass through.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197691A (en) * | 2016-07-05 | 2016-12-07 | 上海理工大学 | The detection device of a kind of ultrashort pulse carrier envelope phase and detection method |
| CN108613743A (en) * | 2018-06-14 | 2018-10-02 | 清华大学 | A kind of noise compensation method of double light comb measuring systems |
| CN109211414A (en) * | 2018-07-13 | 2019-01-15 | 华东师范大学 | Superhigh precision optical frequency tester and its test method |
| CN111239075A (en) * | 2020-02-18 | 2020-06-05 | 华东师范大学重庆研究院 | Combustion field gas temperature and multi-component concentration measuring system based on self-adaptive optical fiber optical comb |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102246016A (en) * | 2008-07-25 | 2011-11-16 | 国立科学研究中心 | Fourier transform spectrometer with a frequency comb light source |
| US8541744B1 (en) * | 2013-03-09 | 2013-09-24 | Jian Liu | Method and apparatus for wavelength locking free optical frequency comb based differential absorption Lidar |
| WO2014102572A1 (en) * | 2012-12-28 | 2014-07-03 | Cnr - Consiglio Nazionale Delle Ricerche | Frequency comb spectroscopy apparatus and method of frequency comb spectroscopy |
| CN104316180A (en) * | 2014-11-02 | 2015-01-28 | 华东师范大学 | Double-optical frequency comb optical imaging method based on continuous frequency stabilized laser |
| CN105548036A (en) * | 2015-12-08 | 2016-05-04 | 上海理工大学 | Self-adaptive double-light-comb spectrum system |
-
2016
- 2016-05-11 CN CN201610308996.1A patent/CN105823559B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102246016A (en) * | 2008-07-25 | 2011-11-16 | 国立科学研究中心 | Fourier transform spectrometer with a frequency comb light source |
| WO2014102572A1 (en) * | 2012-12-28 | 2014-07-03 | Cnr - Consiglio Nazionale Delle Ricerche | Frequency comb spectroscopy apparatus and method of frequency comb spectroscopy |
| US8541744B1 (en) * | 2013-03-09 | 2013-09-24 | Jian Liu | Method and apparatus for wavelength locking free optical frequency comb based differential absorption Lidar |
| CN104316180A (en) * | 2014-11-02 | 2015-01-28 | 华东师范大学 | Double-optical frequency comb optical imaging method based on continuous frequency stabilized laser |
| CN105548036A (en) * | 2015-12-08 | 2016-05-04 | 上海理工大学 | Self-adaptive double-light-comb spectrum system |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197691A (en) * | 2016-07-05 | 2016-12-07 | 上海理工大学 | The detection device of a kind of ultrashort pulse carrier envelope phase and detection method |
| CN106197691B (en) * | 2016-07-05 | 2019-02-15 | 上海理工大学 | A kind of detection device and detection method of ultrashort pulse carrier envelope phase |
| CN108613743A (en) * | 2018-06-14 | 2018-10-02 | 清华大学 | A kind of noise compensation method of double light comb measuring systems |
| CN109211414A (en) * | 2018-07-13 | 2019-01-15 | 华东师范大学 | Superhigh precision optical frequency tester and its test method |
| CN111239075A (en) * | 2020-02-18 | 2020-06-05 | 华东师范大学重庆研究院 | Combustion field gas temperature and multi-component concentration measuring system based on self-adaptive optical fiber optical comb |
| CN111239075B (en) * | 2020-02-18 | 2022-10-11 | 华东师范大学重庆研究院 | Combustion field gas temperature and multi-component concentration measuring system based on self-adaptive optical fiber optical comb |
| CN111786674A (en) * | 2020-07-09 | 2020-10-16 | 北京大学 | Analog bandwidth expansion method and system for analog-to-digital conversion system |
| CN111786674B (en) * | 2020-07-09 | 2022-08-16 | 北京大学 | Analog bandwidth expansion method and system for analog-to-digital conversion system |
| CN111934806A (en) * | 2020-07-22 | 2020-11-13 | 上海交通大学 | Time frequency synchronization device and synchronization method based on electro-optical modulation double-optical comb |
| CN111934806B (en) * | 2020-07-22 | 2022-06-21 | 上海交通大学 | Time frequency synchronization device and synchronization method based on electro-optical modulation double-optical comb |
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