CN105207049B - Laser spectrum power synthetic system and method - Google Patents
Laser spectrum power synthetic system and method Download PDFInfo
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- CN105207049B CN105207049B CN201510719376.2A CN201510719376A CN105207049B CN 105207049 B CN105207049 B CN 105207049B CN 201510719376 A CN201510719376 A CN 201510719376A CN 105207049 B CN105207049 B CN 105207049B
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Abstract
The invention discloses a kind of laser spectrum power synthetic system and methods, are related to laser spectrum power combing field, the system comprises：Spectral power synthesis module, optical sampler and multiple light sources module, the multiple light source module is coupled with the spectral power synthesis module, the spectral power synthesis module is coupled with the optical sampler, and the optical sampler is coupled with the multiple light source module respectively.Compared with the spectral power synthesis system of the prior art, laser spectrum power combining methods based on sampling feedback, effectively prevent the defect that fiber bragg grating easily leads to the inconsistency of making spectral mismatch and laser beam quality deterioration, effectively increase the quality of synthetic laser light beam, compared with existing single-frequency laser adds the light-source system of the method for phase-modulation spectrum widening, it is simple in structure, it is at low cost.
Description
Technical field
The present invention relates to laser spectrum power combing fields, in particular to a kind of laser spectrum power synthetic system
And method.
Background technology
The high-quality high-average power laser of continuous wave work applies valence in industry, national defence and scientific research field with important
Value.Optical fiber laser has that high efficiency, compact-sized, high laser beam quality, flexible transfer, heat dissipation is good, spectral region is wide
With the advantages such as non-maintaining, start in many laser application fields widely used.However, being limited in optical fiber nonlinear effect and can
The factors such as the pumping source brightness of injection, separate unit optical fiber laser output power is limited, only thousands of watts.Needing higher power
Application scenarios, it is inevitable choice to carry out power combing using more optical fiber lasers.Specific technological approaches include geometry and beam,
Optics coherence tomography and Spectral beam combining.Simultaneously beam is technically easiest to realize geometry, but laser beam quality is poor, is not suitable for swashing
The more demanding occasion of light beam quality.Optics coherence tomography can obtain preferable laser beam quality and peak light intensity, but right
The requirement of separate unit optical fiber laser is harsh, causes separate unit laser output power limited serious, to obtain larger power needs
System scale it is huge, technical difficulty highest.In comparison, Spectral beam combining technical difficulty is moderate, and laser beam quality also can
It is guaranteed, is current most potential power combining methods.The principle of spectral power synthetic method (is compared using dispersive medium
Such as multi-layer dielectric gratings or volume Bragg grating) spectral dispersion effect, careful design is operated in doped fiber
The laser beam of more narrow linewidth lasers of different wave length synthesizes a branch of and keeps laser beam quality not bad in gain bandwidth
Change or deterioration is smaller, to realize the promotion of the power and light intensity in aperture altogether.
Spectral power synthetic method needs to accurately control the centre wavelength and line width of separate unit optical fiber laser, current separate unit
There are mainly two types of the centre wavelengths and line width control method of optical fiber laser output, and one is add phase tune using single-frequency laser
The method of spectrum widening processed, another kind are to utilize to control based on the oscillator of narrow linewidth fiber bragg grating pair.
But the light-source system of the method based on single-frequency laser plus phase-modulation spectrum widening is complicated, and it is of high cost, it is uncomfortable
It is preferably used for large scale system, and fiber bragg grating easily leads to spectral mismatch and laser beam quality to the inconsistency of making
Deterioration.
Invention content
The purpose of the present invention is to provide a kind of laser spectrum power synthetic system and methods, to effectively improve existing light
The laser beam quality of spectral power synthesis and the cost for effectively reducing existing spectral power synthesis system.
In a first aspect, an embodiment of the present invention provides a kind of laser spectrum power synthetic systems, including：Spectral power synthesizes
Module, optical sampler and multiple light sources module, the multiple light source module is coupled with the spectral power synthesis module, described
Spectral power synthesis module is coupled with the optical sampler, and the optical sampler is coupled with the multiple light source module respectively；
The multiple light source module for generating laser beam respectively；
The spectral power synthesis module, which is used to the laser beam that multiple light source modules generate synthesizing one, to swash
Light light beam；
The laser beam that the optical sampler is used to export the spectral power synthesis module is sampled, described in acquisition
Intensity belongs to the laser beam of presumptive area in the laser beam of spectral power synthesis module output, will sample the laser obtained
Light beam feeds back to the multiple light source module respectively；
Each light source module be used for according to the wavelength of the feedback laser light beam adjustment output laser beam obtained and
Line width.
With reference to first aspect, the embodiment of the present invention additionally provides the first possible embodiment of first aspect, wherein also
Including：Spectroscope is sampled, the spectral power synthesis module is coupled with the sampling spectroscope, the spectroscopical sampling of sampling
Output end is coupled with the optical sampler；
The sampling spectroscope is used to the laser beam that the spectral power synthesis module exports separating a branch of sub- laser
The sub- laser beam is inputted the optical sampler, wherein the sub- laser beam and institute by light beam by the sampling output end
The parameter characteristic for stating the laser beam of spectral power synthesis module output is consistent；
The optical sampler is specifically used for being sampled the sub- laser beam, obtains strong in the sub- laser beam
Degree belongs to the fraction of laser light light beam of presumptive area, will sample the laser beam obtained and feeds back to the multiple light source die respectively
Block.
With reference to first aspect or the first possible embodiment of first aspect, the embodiment of the present invention additionally provide first party
Second of possible embodiment in face, wherein it includes with the laser beam that the intensity of the laser beam, which belongs to presumptive area,
Centre wavelength centered on the intensity highest zone of the laser beam delimited as width using pre-set bandwidths.
Second of possible embodiment with reference to first aspect, the embodiment of the present invention additionally provide the third of first aspect
Possible embodiment, wherein the light source module includes fibre laser oscillator and power amplifier, and the optical-fiber laser shakes
It swings device to couple with the power amplifier, the power amplifier is coupled with the spectral power synthesis module, the light
Sampler is coupled with the fibre laser oscillator；
The fibre laser oscillator is used to generate low power sources, and defeated according to the feedback laser light beam adjustment obtained
Go out the wavelength and line width of laser beam；
The power amplifier is used to carry out power amplification to the low power sources that the fibre laser oscillator exports.
The third possible embodiment with reference to first aspect, the embodiment of the present invention additionally provide the 4th kind of first aspect
Possible embodiment, wherein further include fiber optic splitter, the optical sampler is coupled with the fiber optic splitter, the optical fiber
Beam splitter is coupled with multiple fibre laser oscillators respectively；
The fiber optic splitter is used to the feedback laser light beam that the optical sampler exports being divided into multiple identical feedbacks
Sub- laser beam inputs a sub- laser beam of feedback to each fibre laser oscillator.
The 4th kind of possible embodiment with reference to first aspect, the embodiment of the present invention additionally provide the 5th kind of first aspect
Possible embodiment, wherein further include the first energy transmission optical fibre, the optical sampler passes through first energy transmission optical fibre
It is coupled with the fiber optic splitter.
The 5th kind of possible embodiment with reference to first aspect, the embodiment of the present invention additionally provide the 6th kind of first aspect
Possible embodiment, wherein further include the second energy transmission optical fibre, second energy transmission optical fibre shakes with the optical-fiber laser
It is identical to swing device quantity, the fiber optic splitter passes through second energy transmission optical fibre and each fibre laser oscillator coupling
It closes.
Second aspect, the embodiment of the present invention additionally provide a kind of laser spectrum power combining methods, are applied to laser spectrum
Power synthetic system, the system comprises：Spectral power synthesis module, optical sampler and multiple light sources module, the multiple light
Source module is coupled with the spectral power synthesis module, and the spectral power synthesis module is coupled with the optical sampler, institute
Optical sampler is stated to couple with the multiple light source module respectively, the method includes：
The multiple light source module generates laser beam respectively；
The laser beam that multiple light source modules generate is synthesized a laser light by the spectral power synthesis module
Beam；
The laser beam that the optical sampler exports the spectral power synthesis module is sampled, and obtains the spectrum
Intensity belongs to the laser beam of presumptive area in the laser beam of power combing module output, will sample the laser beam obtained
The multiple light source module is fed back to respectively；
Each light source module exports the wavelength and line width of laser beam according to the feedback laser light beam adjustment obtained.
In conjunction with second aspect, the embodiment of the present invention additionally provides the first possible embodiment of second aspect, wherein institute
The system of stating further includes：Spectroscope is sampled, the spectral power synthesis module is coupled with the sampling spectroscope, the sampling light splitting
The sampling output end of mirror is coupled with the optical sampler；
The laser beam that the optical sampler exports the spectral power synthesis module is sampled, and obtains the spectrum
Intensity belongs to the laser beam of presumptive area in the laser beam of power combing module output, will sample the laser beam obtained
The multiple light source module is fed back to respectively, including：
The laser beam that the spectral power synthesis module exports is separated a branch of sub- laser beam by the sampling spectroscope,
The sub- laser beam is inputted into the optical sampler by the sampling output end, wherein the sub- laser beam swashs with described
The parameter characteristic of light light beam is consistent；
The optical sampler is sampled the sub- laser beam, and the intensity obtained in the sub- laser beam belongs to pre-
The fraction of laser light light beam for determining region will sample the laser beam obtained and feed back to the multiple light source module.
In conjunction with the first of second aspect or second aspect possible embodiment, the embodiment of the present invention additionally provides second party
Second of possible embodiment in face, wherein it includes with the laser beam that the intensity of the laser beam, which belongs to presumptive area,
Centre wavelength centered on the intensity highest zone of the laser beam delimited as width using pre-set bandwidths.
The embodiment of the present invention, wavelength and the line width difference of the light source that each light source module generates, therefore, passes through spectral power
When the laser beam that multiple light source modules generate is synthesized a laser beam by synthesis module so that different wavelength exist
It spatially separates, wherein the intensity highest zone of synthetic laser light beam indicates the laser beam degree of overlapping that each light source module generates
Highest region, namely the centre wavelength and line width of the laser beam that each light source module generates are corresponded to, it is used for by optical sampler
The laser beam of spectral power synthesis module output is sampled, swashing for the spectral power synthesis module output is obtained
Intensity belongs to the laser beam of presumptive area in light light beam, wherein it can be with centre wavelength that the intensity, which belongs to presumptive area,
Centered on the region with certain line width.The laser beam obtained will be sampled again feeds back to the multiple light source die respectively
Block, each light source module are used for wavelength and line width according to the feedback laser light beam adjustment output laser beam obtained,
Therefore, it is possible to change the centre wavelength and line width of light source module, realize that the working condition of fibre laser oscillator is synthesized to improvement
The direction change of laser beam quality simultaneously locks automatically.
In the spectral power synthesis system of the prior art, centre wavelength and Line-width precision to grating pair require very high, system
Make difficulty, and system caused by needing to carry out real-time feedback control due to the influence of temperature drift and vibrations in use
Complexity, therefore, compared with the spectral power synthesis system of the prior art, the laser spectrum power combing side based on sampling feedback
Method, effectively prevent fiber bragg grating to the inconsistency of making easily lead to spectral mismatch and laser beam quality deterioration
Defect effectively increases the quality of synthetic laser light beam, and the method for phase-modulation spectrum widening is added with existing single-frequency laser
Light-source system compare, it is simple in structure, it is at low cost.
Other features and advantages of the present invention will be illustrated in subsequent specification, also, partly be become from specification
It is clear that being understood by implementing the embodiment of the present invention.The purpose of the present invention and other advantages can be by being write
Specifically noted structure is realized and is obtained in specification, claims and attached drawing.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.Shown in attached drawing, above and other purpose of the invention, feature and advantage will be more clear.In whole
Identical reference numeral indicates identical part in attached drawing.Actual size equal proportion scaling is not pressed deliberately draws attached drawing, emphasis
It is that the purport of the present invention is shown.
Fig. 1 shows a kind of structure chart of the embodiment of laser spectrum power synthetic system provided in an embodiment of the present invention；
Fig. 2 shows a kind of method flow diagrams of laser spectrum power combining methods provided in an embodiment of the present invention；
Fig. 3 shows the method flow diagram of another laser spectrum power combining methods provided in an embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Whole description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present invention is in order to overcome the light of the existing method for adding phase-modulation spectrum widening based on single-frequency laser
Source system complex, it is of high cost, it is not suitable for large scale system, and fiber bragg grating easily leads to the inconsistency of making
The defect of spectral mismatch and laser beam quality deterioration, provides a kind of laser spectrum power synthetic system, as shown in Figure 1, institute
The system of stating includes：Spectral power synthesis module 103, optical sampler 105 and multiple light sources module 100, the multiple light source module
100 couple with the spectral power synthesis module 103, the spectral power synthesis module 103 and 105 coupling of the optical sampler
It closes, the optical sampler 105 is coupled with the multiple light source module 100 respectively.
In the embodiment of the present invention, the light source module 100 is the laser that can generate laser beam, the light source module
100 can be made of high-power oscillator, can also be made of fibre laser oscillator 101 and power amplifier 102, each
The wavelength for the light beam that light source module 100 actually generates may be not quite similar.
As shown in Figure 1, the light source module 100 includes fibre laser oscillator 101 and power amplifier 102, it is described
Fibre laser oscillator 101 is coupled with the power amplifier 102, the power amplifier 102 and the spectral power
Synthesis module 103 couples.
The fibre laser oscillator 101 is for generating low power sources as seed light source, wherein each optical-fiber laser
Oscillator 101 can utilize the fiber grating pair of careful design to realize that the laser of specific centre wavelength and line width exports.It needs
Bright, the centre wavelength and line width of the laser of 101 reality output of each fibre laser oscillator may be not quite similar.
The power amplifier 102 is used to carry out work(to the low power sources that the fibre laser oscillator 101 exports
Rate is amplified, and in the embodiment of the present invention, the power amplifier 102 can be to realize laser using rare earth doped fiber gain media
The amplifier of the amplification of power, for example, it may be erbium-doped fiber amplifier.The power amplifier 102 can be kept as possible
The centre wavelength of laser is constant, and line width broadening is smaller, while the nonlinear effect of avoiding damage to property.
Spectral power synthesis module 103 can synthesize the laser beam that multiple power amplifiers 102 export
One laser beam, to realize that the power in aperture altogether and light intensity are promoted.In the embodiment of the present invention, the spectral power synthesizes mould
Block 103 may include volume Bragg grating, by the laser beam of different wave length after dispersion, realize the power superposition in far field, when
Can also include so other components with dispersion function such as plane grating or prism.
The laser beam that the optical sampler 105 is used to export the spectral power synthesis module 103 is sampled, and is obtained
The laser beam that intensity in the laser beam that the spectral power synthesis module 103 exports belongs to presumptive area is obtained, then again will
It samples the laser beam obtained and feeds back to the multiple light source module 100 respectively.
In the embodiment of the present invention, the optical sampler 105 may include diaphragm and coupled lens, be filtered out by diaphragm described
The intensity for the laser beam that spectral power synthesis module 103 exports belongs to the part except presumptive area, saturating by the coupling
Intensity is belonged to the laser coupled of presumptive area to the multiple fibre laser oscillator by mirror, wherein the laser beam it is strong
Degree belong to presumptive area be delimited centered on the centre wavelength of the laser beam, by width of pre-set bandwidths it is described sharp
The intensity highest zone of light light beam.
Since the centre wavelength and line width of the laser of 101 reality output of each fibre laser oscillator may be not quite similar,
The spectral power synthesis module 103 so that different wavelength when being spatially unfolded, each different laser of input it is identical
Wavelength is partly superimposed together, then the intensity highest in multiple highest regions of laser beam degree of overlapping of different wave length, therefore,
The intensity highest zone of the laser beam of the spectral power synthesis module output corresponds to the middle cardiac wave of each fibre laser oscillator
Long and line width.
The laser beam exported to the spectral power synthesis module 103 by optical sampler 105 is sampled, and obtains institute
State the laser beam that intensity in the laser beam of the output of spectral power synthesis module 103 belongs to presumptive area.
Optical sampler 105 will sample the laser beam obtained and feeds back to the multiple light source module 100 respectively again, each
The light source module 100 is used for wavelength and line width according to the feedback laser light beam adjustment output laser beam obtained, to
Change light source module 100 centre wavelength and line width, realize fibre laser oscillator 101 working condition to improve synthetic laser
The direction change of beam quality simultaneously locks automatically.
Further, near field sampling is carried out to the laser beam that the spectral power synthesis module 103 exports in order to realize,
As shown in Figure 1, the laser spectrum power synthetic system can also include sampling spectroscope 104.The spectral power synthesizes mould
Block 103 is coupled with the sampling spectroscope 104, the sampling output end and 105 coupling of the optical sampler of the sampling spectroscope 104
It closes.The sampling spectroscope 104 is a branch of for separating the near field for the laser beam that the spectral power synthesis module 103 exports
The sub- laser beam is inputted the optical sampler 105 by sub- laser beam by the sampling output end.Wherein, the son swashs
Light light beam is consistent with the parameter characteristic of laser beam that the spectral power synthesis module 103 exports, and the sub- laser beam is
A part for the laser beam that the spectral power synthesis module 103 exports.
The optical sampler 105 is specifically used for being sampled the sub- laser beam, obtains in the sub- laser beam
The intensity highest zone fraction of laser light light beam, will sample obtain laser beam feed back to the multiple light source respectively
Module 100.
Further, the embodiment of the present invention can also include fiber optic splitter 107, the optical sampler 105 and the light
Fine beam splitter 107 couples, and the fiber optic splitter 107 is coupled with multiple fibre laser oscillators 101 respectively, the optical fiber
Beam splitter 107 is divided into multiple identical beamlets by laser beam is inputted, and is separately input to multiple fibre laser oscillators 101
In.
In the embodiment of the present invention, the optical sampler 105, fiber optic splitter 107 and multiple fibre laser oscillators
Coupling between 101 is coupled by energy transmission optical fibre, and the energy transmission optical fibre can realize higher Laser energy transmission,
Reduce energy loss of the laser beam in transmission.
As shown in Figure 1, the optical sampler 105, fiber optic splitter 107 and multiple fibre laser oscillators 101 it
Between can be coupled by the first energy transmission optical fibre 106 and the second energy transmission optical fibre 108.Specifically, the optical sampler 105 is logical
It crosses first energy transmission optical fibre 106 to couple with the fiber optic splitter 107, second energy transmission optical fibre 108 and institute
It is identical to state 101 quantity of fibre laser oscillator, the fiber optic splitter 107 is by second energy transmission optical fibre 108 and often
A fibre laser oscillator 101 couples.
In conclusion each fibre laser oscillator of the embodiment of the present invention 101 generates multiple low power sources conducts
Multiple seed light sources, the power amplifier 102 carry out work(to the low power sources that the fibre laser oscillator 101 exports
Rate is amplified, then the laser beam that multiple power amplifiers 102 export is combined into a branch of, institute by spectral power synthesis module 103
It states sampling spectroscope 104 and the near field for the laser beam that the spectral power synthesis module 103 exports is separated into a branch of sub- laser light
The sub- laser beam is inputted the optical sampler 105 by beam by the sampling output end, and the optical sampler 105 is to described
Sub- laser beam is sampled, and is obtained the fraction of laser light light beam of the intensity highest zone in the sub- laser beam, will be sampled
The laser beam of acquisition feeds back to the fiber optic splitter 107 respectively, and the fiber optic splitter 107 divides the laser beam of input
For multiple identical beamlets, it is separately input in multiple fibre laser oscillators 101, forms adaptive backfeed loop,
The centre wavelength and line width for changing fibre laser oscillator realize the working condition of fibre laser oscillator to improving synthetic laser
The direction change of beam quality simultaneously locks automatically.
Compared with the spectral power synthesis system of the prior art, the laser spectrum power combining methods based on sampling feedback,
Effectively prevent fiber bragg grating to the inconsistency of making easily lead to spectral mismatch and laser beam quality deterioration lack
It falls into, effectively increases the quality of synthetic laser light beam, add the method for phase-modulation spectrum widening with existing single-frequency laser
Light-source system is compared, simple in structure, at low cost.
As shown in Fig. 2, the embodiment of the present invention additionally provides a kind of laser spectrum power combining methods, it is applied to laser spectrum
Power synthetic system, the system comprises：Spectral power synthesis module, optical sampler and multiple light sources module, the multiple light
Source module is coupled with the spectral power synthesis module, and the spectral power synthesis module is coupled with the optical sampler, institute
Optical sampler is stated to couple with the multiple light source module respectively, the method includes：
S201：Multiple light sources module generates laser beam respectively；
S202：The laser beam that multiple light sources module generates is synthesized a laser beam by spectral power synthesis module；
S203：The laser beam that optical sampler exports the spectral power synthesis module is sampled, and obtains spectrum work(
Intensity belongs to the laser beam of presumptive area in the laser beam of rate synthesis module output, will sample the laser beam point obtained
Multiple light sources module is not fed back to；
S204：Each light source module exports the wavelength and line of laser beam according to the feedback laser light beam adjustment obtained
It is wide.
It is apparent to those skilled in the art that for convenience and simplicity of description, the method for foregoing description
Specific work process, can refer to aforementioned system, device and unit embodiment in corresponding process, details are not described herein.
As shown in figure 3, the embodiment of the present invention additionally provides another laser spectrum power combining methods, it is applied to laser light
Spectral power synthesis system, the system comprises：Fiber optic splitter, sampling spectroscope, spectral power synthesis module, optical sampler and
Multiple light sources module, wherein the light source module includes fibre laser oscillator and power amplifier, and each optical fiber swashs
Optical generator is coupled with a power amplifier, and multiple power amplifiers synthesize mould with the spectral power
Block couples, and the optical sampler couples with the fiber optic splitter, the fiber optic splitter respectively with multiple optical-fiber lasers
Oscillator couples, the method includes：
S301：Multiple optical-fiber laser oscillations generate low power sources respectively；
S302：Low power sources power amplification of each power amplifier to the input power amplifier；
S303：The laser beam that multiple power amplifiers export is synthesized a laser light by spectral power synthesis module
Beam；
S304：The laser beam that spectral power synthesis module exports is separated a branch of sub- laser beam by sampling spectroscope, will
The sub- laser beam inputs the optical sampler；
S305：The optical sampler is sampled the sub- laser beam, obtains the intensity in the sub- laser beam
The laser beam of highest zone will sample the laser beam obtained and feed back to fiber optic splitter；
S306：The feedback laser light beam that the optical sampler exports is divided into multiple identical feedback and swashed by fiber optic splitter
Light light beam inputs a sub- laser beam of feedback to each fibre laser oscillator.
It is apparent to those skilled in the art that for convenience and simplicity of description, the method for foregoing description
Specific work process, can refer to aforementioned system, device and unit embodiment in corresponding process, details are not described herein.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of laser spectrum power synthetic system, which is characterized in that including：Spectral power synthesis module, optical sampler and more
A light source module, the multiple light source module are coupled with the spectral power synthesis module, the spectral power synthesis module
It is coupled with the optical sampler, the optical sampler is coupled with the multiple light source module respectively；
The multiple light source module for generating laser beam respectively；
The spectral power synthesis module is used to the laser beam that multiple light source modules generate synthesizing a laser light
Beam；
The laser beam that the optical sampler is used to export the spectral power synthesis module is sampled, and obtains the spectrum
Intensity belongs to the laser beam of presumptive area in the laser beam of power combing module output, will sample the laser beam obtained
The multiple light source module is fed back to respectively；
Each light source module is used for wavelength and line width according to the feedback laser light beam adjustment output laser beam obtained.
2. laser spectrum power synthetic system according to claim 1, which is characterized in that further include：Sample spectroscope, institute
It states spectral power synthesis module to couple with the sampling spectroscope, the spectroscopical sampling output end of sampling and the Optical Sampling
Device couples；
The sampling spectroscope, which is used to the near field for the laser beam that the spectral power synthesis module exports separating a branch of son, to swash
The sub- laser beam is inputted the optical sampler by light light beam by the sampling output end, wherein the sub- laser beam with
The parameter characteristic of the laser beam of the spectral power synthesis module output is consistent；
The optical sampler is specifically used for being sampled the sub- laser beam, obtains the intensity category in the sub- laser beam
In the fraction of laser light light beam of presumptive area, the laser beam obtained will be sampled and feed back to the multiple light source module respectively.
3. laser spectrum power synthetic system according to claim 1 or 2, which is characterized in that the laser beam it is strong
Degree belongs to presumptive area and includes：Centered on the centre wavelength of the laser beam, the institute that delimited as width using pre-set bandwidths
State the intensity highest zone of laser beam.
4. laser spectrum power synthetic system according to claim 3, which is characterized in that the light source module includes optical fiber
Laser oscillator and power amplifier, the fibre laser oscillator are coupled with the power amplifier, the luminous power
Amplifier is coupled with the spectral power synthesis module, and the optical sampler is coupled with the fibre laser oscillator；
The fibre laser oscillator swashs for generating low power sources, and according to the feedback laser light beam adjustment output obtained
The wavelength and line width of light light beam；
The power amplifier is used to carry out power amplification to the low power sources that the fibre laser oscillator exports.
5. laser spectrum power synthetic system according to claim 4, which is characterized in that further include fiber optic splitter, institute
Optical sampler is stated to couple with the fiber optic splitter, the fiber optic splitter respectively with multiple fibre laser oscillator couplings
It closes；
The fiber optic splitter, which is used to the feedback laser light beam that the optical sampler exports being divided into multiple identical feedback, to swash
Light light beam inputs a sub- laser beam of feedback to each fibre laser oscillator.
6. laser spectrum power synthetic system according to claim 5, which is characterized in that further include the first energy transmission light
Fibre, the optical sampler are coupled by first energy transmission optical fibre with the fiber optic splitter.
7. laser spectrum power synthetic system according to claim 6, which is characterized in that further include the second energy transmission light
Fibre, second energy transmission optical fibre is identical as the fibre laser oscillator quantity, and the fiber optic splitter passes through described
Two energy transmission optical fibres are coupled with each fibre laser oscillator.
8. a kind of laser spectrum power combining methods, which is characterized in that be applied to laser spectrum power synthetic system, the system
Including：Spectral power synthesis module, optical sampler and multiple light sources module, the multiple light source module with the spectral power
Synthesis module couples, and the spectral power synthesis module couples with the optical sampler, the optical sampler respectively with it is described more
A light source module coupling, the method includes：
The multiple light source module generates laser beam respectively；
The laser beam that multiple light source modules generate is synthesized a laser beam by the spectral power synthesis module；
The laser beam that the optical sampler exports the spectral power synthesis module is sampled, and obtains the spectral power
Intensity belongs to the laser beam of presumptive area in the laser beam of synthesis module output, will sample the laser beam obtained and distinguishes
Feed back to the multiple light source module；
Each light source module exports the wavelength and line width of laser beam according to the feedback laser light beam adjustment obtained.
9. laser spectrum power combining methods according to claim 8, which is characterized in that the system also includes：Sampling
Spectroscope, the spectral power synthesis module are coupled with the sampling spectroscope, the spectroscopical sampling output end of the sampling and
The optical sampler coupling；
The optical sampler is sampled the near field for the laser beam that the spectral power synthesis module exports, and obtains the light
Intensity belongs to the laser beam of presumptive area in the laser beam of spectral power synthesis module output, will sample the laser light obtained
Beam feeds back to the multiple light source module respectively, including：
The laser beam that the spectral power synthesis module exports is separated a branch of sub- laser beam by the sampling spectroscope, by institute
It states sub- laser beam and the optical sampler is inputted by the sampling output end, wherein the sub- laser beam and the laser light
The parameter characteristic of beam is consistent；
The optical sampler is sampled the sub- laser beam, and the intensity obtained in the sub- laser beam belongs to fate
The fraction of laser light light beam in domain will sample the laser beam obtained and feed back to the multiple light source module.
10. laser spectrum power combining methods according to claim 9, which is characterized in that the intensity of the laser beam
Belonging to presumptive area includes：Centered on the centre wavelength of the laser beam, delimited using pre-set bandwidths as width described in
The intensity highest zone of laser beam.
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| CN201510719376.2A CN105207049B (en) | 2015-10-29 | 2015-10-29 | Laser spectrum power synthetic system and method |
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| CN201510719376.2A CN105207049B (en) | 2015-10-29 | 2015-10-29 | Laser spectrum power synthetic system and method |
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| CN105207049A CN105207049A (en) | 2015-12-30 |
| CN105207049B true CN105207049B (en) | 2018-08-31 |
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