CN110445001A - A kind of pulse temporal width can a wide range of continuous scanning laser - Google Patents
A kind of pulse temporal width can a wide range of continuous scanning laser Download PDFInfo
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- CN110445001A CN110445001A CN201910664217.5A CN201910664217A CN110445001A CN 110445001 A CN110445001 A CN 110445001A CN 201910664217 A CN201910664217 A CN 201910664217A CN 110445001 A CN110445001 A CN 110445001A
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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
- H01S3/0078—Frequency filtering
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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
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06716—Fibre compositions or doping with active elements
Abstract
The invention discloses a kind of pulse temporal width can a wide range of continuous scanning laser, it include: pump laser, bundling device, working-laser material, first collimator, second collimator, beam splitter, circulator, mode locker, Polarization Controller and filter, the output end of the pump laser and the first input end of bundling device connect, one end of the Polarization Controller and the second input terminal of bundling device connect, the output end of the bundling device is connect by optical fiber with working-laser material, the filter includes: D-shaped reflecting mirror, prism pair, shelter and reflecting mirror.The laser can continuously change bandpass spectrum ingredient by a wide range of to the spectrum of any wave band progress flexible modulation to the filter for core using with prism, so that the pulse temporal width of the mode-locked laser can be scanned interior on a large scale.Present invention is mainly used for laser technology fields.
Description
Technical field
The present invention relates to optical technical field, in particular to a kind of pulse temporal width can a wide range of continuous scanning laser
Device.
Background technique
Time pulsewidth is an important parameter of laser, and current laser is all set time width, continuous light,
Nanosecond, picosecond, femtosecond or Ah Miao.Due to the change of the change inevitable requirement spectrum width of laser pulse time width, due to existing
Filter cannot the spectrum width to any wave band continuously tuned, therefore, existing laser can not be on time width
Realize a wide range of continuous scanning.
Summary of the invention
The object of the present invention is to provide the lasers that one kind can carry out a wide range of continuous scanning to pulse temporal width.
The solution that the present invention solves its technical problem is: a kind of pulse temporal width can a wide range of continuous scanning swash
Light device, comprising: pump laser, bundling device, working-laser material, first collimator, the second collimator, beam splitter, circulator,
Mode locker, Polarization Controller and filter, the output end of the pump laser and the first input end of bundling device connect, described
One end of Polarization Controller and the second input terminal of bundling device connect, and the output end of the bundling device passes through optical fiber and laser work
Substance connection, the filter include: D-shaped reflecting mirror, prism to, shelter and reflecting mirror, and working-laser material passes through first
Collimator issues complex light, and the prism is to including: the first prism and the second prism, first prism and the two or three
The optical characteristics of prism is all the same, and the complex light enters the first prism, second prism with brewster angle incidence
Light incident surface it is parallel with the light-emitting face of the first prism, the complex light successively passes through the first prism and the second prism
After form dispersed light, the dispersed light, which is blocked after object filtering, reaches reflecting mirror, and the reflecting mirror is with first angle towards prism
To inclination, the angle value of the first angle is 1 ° -2 °, and the dispersed light is reflected and is back to prism to mixed by the reflecting mirror
Synthesis outgoing complex light, the outgoing complex light are mapped in the input terminal of the second collimator by D-shaped reflecting mirror, second collimation
The output end of device and the input terminal of beam splitter connect, and the first output end of the beam splitter and the first interface of circulator connect,
The input terminal of the second interface of the circulator and mode locker connects, the third interface of the circulator and Polarization Controller it is another
The second output terminal of one end connection, the beam splitter exports laser.
Further, the working-laser material is erbium-doped fiber, one end of the erbium-doped fiber and the output end of bundling device
Connection, the other end of the erbium-doped fiber are connect with first collimator.
Further, the working-laser material is Yb dosed optical fiber, one end of the Yb dosed optical fiber and the output end of bundling device
Connection, the other end of the Yb dosed optical fiber are connect with first collimator.
Further, the working-laser material is thulium doped fiber, one end of the thulium doped fiber and the output end of bundling device
Connection, the other end of the thulium doped fiber are connect with first collimator.
Further, the material of first prism is N-SF11, optical transmission window is 420nm-2.3 μm.
Further, the material of first prism is F2, optical transmission window is 385nm-2 μm.
Further, the material of first prism is calcirm-fluoride, optical transmission window is 600nm-8 μm.
Further, the material of first prism is zinc selenide, optical transmission window is 2 μm -16 μm.
Further, the shelter is filtered dispersed light with shielding mode.
Further, the shelter is connected with motorized precision translation stage, and the motorized precision translation stage is moved for controlling the shelter
It moves to control shelter to the amount of blocking of dispersed light, the shelter is filtered dispersed light with shielding mode.
Further, the shelter is plate-like.
The beneficial effects of the present invention are: the laser is utilized with prism to the filter for core to the wide range of laser gain
Ingredient carries out continuously adjustable bandpass filtering, so that the mode-locked laser can large-scale scanning pulse time width.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.Obviously, described attached drawing is a part of the embodiments of the present invention, rather than is all implemented
Example, those skilled in the art without creative efforts, can also be obtained according to these attached drawings other designs
Scheme and attached drawing.
Fig. 1 is the index path of laser；
Fig. 2 is the location diagram of reflecting mirror.
Specific embodiment
It is carried out below with reference to technical effect of the embodiment and attached drawing to design of the invention, specific structure and generation clear
Chu is fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright a part of the embodiment, rather than whole embodiments, based on the embodiment of the present invention, those skilled in the art are not being paid
Other embodiments obtained, belong to the scope of protection of the invention under the premise of creative work.In addition, be previously mentioned in text
All connection/connection relationships not singly refer to that component directly connects, and referring to can be added deduct according to specific implementation situation by adding
Few couple auxiliary, Lai Zucheng more preferably coupling structure.Each technical characteristic in the invention, in not conflicting conflict
Under the premise of can be with combination of interactions.
Embodiment 1, with reference to Fig. 1 and Fig. 2, a kind of pulse temporal width can a wide range of continuous scanning laser, comprising: pump
Pu laser 510, bundling device 520, working-laser material 530, first collimator 540, the second collimator 590, beam splitter 580,
Circulator 570, mode locker 560, Polarization Controller 550 and filter, the output end and bundling device of the pump laser 510
520 first input end connection, one end of the Polarization Controller 550 are connect with the second input terminal of bundling device 520, the conjunction
The output end of beam device 520 is connect by optical fiber with working-laser material 530, and the filter includes: D-shaped reflecting mirror 100, prism
To 200, shelter 300 and reflecting mirror 400, the shelter 300 is preferably plate shelter, and working-laser material 530 passes through
First collimator 540 issues complex light 110, and the prism 200 is to including: the first prism 210 and the second prism 220, institute
The optical characteristics for stating the first prism 210 and the second prism 220 is all the same, and the complex light 110 is with brewster angle incidence
Into the first prism 210, the light incident surface of second prism 220 is parallel with the light-emitting face of the first prism 210, institute
It states complex light 110 and successively forms dispersed light 120, the dispersed light 120 after the first prism 210 and the second prism 220
The object 300 that is blocked filtering after reach reflecting mirror 400, wherein reflecting mirror 400 with first angle α towards prism to inclination, with reference to figure
1 and 2, it expresses for convenience, draws coordinate system in fig. 1, wherein the plane of drawing is the face x-y, and going deep into drawing direction is z
Direction.With reference to Fig. 2, reflecting mirror 400 is tilted towards prism to 200 with first angle α, and the angle value of first angle α is 1 ° -2 °,
The angle value refers to the angle value between z-axis.The dispersed light 120 is reflexed to prism and mixed to 200 by the reflecting mirror 400
Synthesis outgoing complex light 130, the outgoing complex light 130 are mapped in the input terminal of the second collimator 590 by D-shaped reflecting mirror 100,
The output end of second collimator 590 is connect with the input terminal of beam splitter 580, the first output end of the beam splitter 580 with
The first interface 1 of circulator 570 connects, and the second interface 2 of the circulator 570 is connect with the input terminal of mode locker 560, described
The third interface 3 of circulator 570 is connect with the other end of Polarization Controller 550, the second output terminal output of the beam splitter 580
Laser.
Pump laser 510, bundling device 520, working-laser material 530, first collimator 540, the second collimator 590,
Beam splitter 580, circulator 570, mode locker 560, Polarization Controller 550 and filter constitute a mode-locked laser, wherein filter
Wave device is located in the laser cavity of the mode-locked laser, and working-laser material is wider multiple by the generation spectrum width of first collimator 540
Light combination 110, the first prism 210 and the second prism 220 composition prism are to 200, when complex light 110 passes through the first prism
When 210, complex light 110 is done only once dispersion, and complex light 110 is opened according to spectrum by dispersion, and the complex light 110 after dispersion enters
Second prism 220, under the action of the second prism 220, the complex light 110 after dispersion forms dispersed light by dispersion again
120, allow shelter 300 in sky so that dispersed light 120 scatters completely in space according to wavelength by dispersion twice
Between the light of upper stop portions wavelength pass through.Through shelter 300 in a manner of blocking, dispersed light 120 is filtered, preferably
, shelter is controlled by motorized precision translation stage, continuously blocking for repeatability is carried out to spectrum, the spectrum for the part that is blocked can not arrive
Up to reflecting mirror 400, to realize the band broad range consecutive variations of bandpass filtering.Reflecting mirror 400 carries out anti-dispersed light 120
It penetrates, to change the transmission route for the astigmatism 120 that fades, dispersed light 120 returns to prism to 200, and it is multiple that dispersed light 120 is combined into outgoing
Light combination 130.The outgoing complex light 130 is projected by D-shaped reflecting mirror 400, and reaches beam splitter 580 by the second collimator 590,
Laser is exported eventually by the second output terminal of beam splitter 580.
The laser utilizes continuously adjustable to wide range ingredient realization of the filter for core to laser gain with prism
Bandpass filtering, so that the pulse temporal width of mode-locked laser can a wide range of continuous scanning.
As optimization, the working-laser material 530 is erbium-doped fiber, one end of the erbium-doped fiber and bundling device 520
Output end connection, the other end of the erbium-doped fiber connect with first collimator 540.
As optimization, the working-laser material 530 is Yb dosed optical fiber, one end of the Yb dosed optical fiber and bundling device 520
Output end connection, the other end of the Yb dosed optical fiber connect with first collimator 540.
As optimization, the working-laser material 530 is thulium doped fiber, one end of the thulium doped fiber and bundling device 520
Output end connection, the other end of the thulium doped fiber connect with first collimator 540.
As optimization, the material of first prism 210 is N-SF11, optical transmission window is 420nm-2.3 μm.Passing through will
The material selection of first prism 210 is N-SF11, optical transmission window is 420nm-2.3 μm, be may be implemented to 420nm-2.3 μm
Spectrum segment is filtered.
As optimization, the material of first prism 210 is F2, optical transmission window is 385nm-2 μm.By by the one or three
The material of prism 210 is F2, optical transmission window is 385nm-2 μm, and effective filtering of the spectrum segment to 385nm-2 μm may be implemented.
As optimization, the material of first prism 210 is calcirm-fluoride, optical transmission window is 600nm-8 μm.By by
The material of one prism 210 is selected as calcirm-fluoride, optical transmission window is 600nm-8 μm, and the spectrum segment to 600nm-8 μm may be implemented
Effectively filtering.
As optimization, the material of first prism 210 is zinc selenide, optical transmission window is 2 μm -16 μm.By by
The material of one prism 210 is selected as zinc selenide, optical transmission window is 2 μm -16 μm, and having for the spectrum segment to 2 μm -16 μm may be implemented
Effect filtering.
Better embodiment of the invention is illustrated above, but the invention is not limited to the implementation
Example, those skilled in the art can also make various equivalent modifications on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent variation or replacement are all included in the scope defined by the claims of the present application.
Claims (10)
1. a kind of pulse temporal width can a wide range of continuous scanning laser characterized by comprising pump laser, conjunction
Beam device, working-laser material, first collimator, the second collimator, beam splitter, circulator, mode locker, Polarization Controller and filtering
Device, the output end of the pump laser and the first input end of bundling device connect, one end of the Polarization Controller and conjunction beam
Second input terminal of device connects, and the output end of the bundling device is connect by optical fiber with working-laser material, the filter packet
Include: to, shelter and reflecting mirror, working-laser material issues complex light by first collimator, described for D-shaped reflecting mirror, prism
For prism to including: the first prism and the second prism, the optical characteristics of first prism and the second prism is all the same,
The complex light enters the first prism, the light incident surface and the first prism of second prism with brewster angle incidence
Light-emitting face it is parallel, the complex light successively forms dispersed light, the dispersion after the first prism and the second prism
Light is blocked after object filtering and reaches reflecting mirror, the reflecting mirror with first angle towards prism to inclination, the first angle
Angle value is 1 ° -2 °, and the dispersed light is reflected and is back to prism to being mixed into outgoing complex light by the reflecting mirror, it is described go out
Complex light is penetrated to be mapped to by D-shaped reflecting mirror in the input terminal of the second collimator, the output end of second collimator and beam splitter
Input terminal connection, the first output end of the beam splitter and the first interface of circulator connect, the second interface of the circulator
It is connect with the input terminal of mode locker, the third interface of the circulator and the other end of Polarization Controller connect, the beam splitter
Second output terminal export laser.
2. a kind of pulse temporal width according to claim 1 can a wide range of continuous scanning laser, which is characterized in that
The working-laser material is erbium-doped fiber, and one end of the erbium-doped fiber and the output end of bundling device connect, described to mix bait light
The fine other end is connect with first collimator.
3. a kind of pulse temporal width according to claim 1 can a wide range of continuous scanning laser, which is characterized in that
The working-laser material is Yb dosed optical fiber, and one end of the Yb dosed optical fiber and the output end of bundling device connect, described to mix ytterbium light
The fine other end is connect with first collimator.
4. a kind of pulse temporal width according to claim 1 can a wide range of continuous scanning laser, which is characterized in that
The working-laser material is thulium doped fiber, and one end of the thulium doped fiber and the output end of bundling device connect, described to mix thulium light
The fine other end is connect with first collimator.
5. a kind of pulse temporal width according to claim 1 can a wide range of continuous scanning laser, which is characterized in that
The material of first prism is N-SF11, optical transmission window is 420nm-2.3 μm.
6. a kind of pulse temporal width according to claim 1 can a wide range of continuous scanning laser, which is characterized in that
The material of first prism is F2, optical transmission window is 385nm-2 μm.
7. a kind of pulse temporal width according to claim 1 can a wide range of continuous scanning laser, which is characterized in that
The material of first prism is calcirm-fluoride, optical transmission window is 600nm-8 μm.
8. a kind of pulse temporal width according to claim 1 can a wide range of continuous scanning laser, which is characterized in that
The material of first prism is zinc selenide, optical transmission window is 2 μm -16 μm.
9. a kind of pulse temporal width according to claim 1 can a wide range of continuous scanning laser, which is characterized in that
The shelter is connected with motorized precision translation stage, and the motorized precision translation stage is mobile to control shelter pair for controlling the shelter
The amount of blocking of dispersed light, the shelter are filtered dispersed light with shielding mode.
10. a kind of pulse temporal width according to claim 9 can a wide range of continuous scanning laser, feature exists
In the shelter is plate-like.
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| CN201910664217.5A CN110445001A (en) | 2019-07-23 | 2019-07-23 | A kind of pulse temporal width can a wide range of continuous scanning laser |
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| CN201910664217.5A CN110445001A (en) | 2019-07-23 | 2019-07-23 | A kind of pulse temporal width can a wide range of continuous scanning laser |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3907430A (en) * | 1973-08-13 | 1975-09-23 | Northrop Corp | Optical bandpass filter |
| CN106129798A (en) * | 2016-08-26 | 2016-11-16 | 中国工程物理研究院激光聚变研究中心 | Mode locked fiber laser |
| CN108141003A (en) * | 2015-10-16 | 2018-06-08 | 统雷有限公司 | For the linear electric machine or voice coil of quick tuning laser device chamber |
| CN109861070A (en) * | 2019-03-15 | 2019-06-07 | 苏州贝亚敏光电科技有限公司 | A kind of generating device of laser |
-
2019
- 2019-07-23 CN CN201910664217.5A patent/CN110445001A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3907430A (en) * | 1973-08-13 | 1975-09-23 | Northrop Corp | Optical bandpass filter |
| CN108141003A (en) * | 2015-10-16 | 2018-06-08 | 统雷有限公司 | For the linear electric machine or voice coil of quick tuning laser device chamber |
| CN106129798A (en) * | 2016-08-26 | 2016-11-16 | 中国工程物理研究院激光聚变研究中心 | Mode locked fiber laser |
| CN109861070A (en) * | 2019-03-15 | 2019-06-07 | 苏州贝亚敏光电科技有限公司 | A kind of generating device of laser |
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Application publication date: 20191112 |
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