CN108832471A - A kind of dual wavelength lock-out pulse optical fiber laser - Google Patents
A kind of dual wavelength lock-out pulse optical fiber laser Download PDFInfo
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- CN108832471A CN108832471A CN201811082089.5A CN201811082089A CN108832471A CN 108832471 A CN108832471 A CN 108832471A CN 201811082089 A CN201811082089 A CN 201811082089A CN 108832471 A CN108832471 A CN 108832471A
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- 230000009977 dual effect Effects 0.000 title claims abstract description 41
- 239000013307 optical fiber Substances 0.000 title claims abstract description 38
- 230000010287 polarization Effects 0.000 claims abstract description 78
- 239000000835 fiber Substances 0.000 claims abstract description 28
- 239000006185 dispersion Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000013078 crystal Substances 0.000 claims description 3
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 2
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 claims 1
- 238000002955 isolation Methods 0.000 claims 1
- 230000001419 dependent effect Effects 0.000 abstract description 10
- 239000006096 absorbing agent Substances 0.000 description 6
- 210000001367 artery Anatomy 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- 210000003462 vein Anatomy 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009022 nonlinear effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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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
- H01S3/06712—Polarising fibre; Polariser
-
- 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
-
- 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
- H01S3/0675—Resonators including a grating structure, e.g. distributed Bragg reflectors [DBR] or distributed feedback [DFB] fibre lasers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
- H01S3/10023—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by functional association of additional optical elements, e.g. filters, gratings, reflectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10061—Polarization control
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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
The present invention discloses a kind of dual wavelength lock-out pulse optical fiber laser, and laser diode, bundling device, gain fibre, first collimator, the second collimator constitute the fiber section of laser；Free space portion between first collimator and the second collimator is disposed with the first Polarization Controller, polarization beam apparatus, birefringent filter, polarization-dependent isolator and the second Polarization Controller from the second collimator to first collimator direction；Output port of the reflected light of polarization beam apparatus as laser, the asynchronous mode locking pulse of output dual wavelength；First grating and the second parallel gratings are placed, and composition grating carries out dispersion compensation to the asynchronous mode locking pulse of the dual wavelength exported and obtain the pulse of dual wavelength synchronizing mode-licked to being set at the output port of laser.
Description
Technical field
The present invention relates to optical fiber laser fields, and in particular to a kind of optical-fiber laser of exportable dual wavelength lock-out pulse
Device.
Background technique
Dual wavelength lock-out pulse laser is in terms of nonlinear frequency conversion, ultra broadband light source and THz wave
There is important application.Mode-locking technique is to obtain the common method of ultrashort light pulse.The core devices for realizing passive mode-locking are saturables
Absorber, the equivalent saturable absorber constituted including the use of fiber nonlinear effect and the saturable absorption characteristic using material
The true saturable absorber of production.Its working principle is that the loss of saturable absorber subtracts with the increase of incident intensity
Small, edge of a pulse partial intensities are small, and loss is big, and pulse center partial intensities are big, and loss is small, and therefore, pulse passes through saturable
It is narrowed when absorber.
Compared to solid lock-out pulse laser, optical fiber lock-out pulse laser has compact-sized, good heat dissipation effect, turns
The advantages that changing high-efficient and good beam quality.At present in optical fiber laser, the method for realizing double-wavelength pulse output is general
It is that two resonant cavities share a saturable absorber, or use two kinds of gain fibres in a resonant cavity, obtains simultaneously
The pulse of 1.0 μm and 1.5 mu m wavebands.Structure is complicated for this mode, and when being transmitted in a fiber due to the pulse of different wave length
Speed is different, is difficult so that two pulses are fully synchronized.
Summary of the invention
To solve the above problems, the present invention provides a kind of dual wavelength lock-out pulse optical fiber laser, dual wavelength can be generated
Lock-out pulse output.
The technical scheme is that：A kind of dual wavelength lock-out pulse optical fiber laser, including：Laser diode (2) closes
It is beam device (3), gain fibre (4), first collimator (1), the second collimator (5), the first grating (11), the second grating (12), straight
Angle prism (13)；
Laser diode (2) is connect with bundling device (3), and bundling device (3) connects first collimator (1), another way warp all the way
Gain fibre (4) connects the second collimator (5)；Laser diode (2), bundling device (3), gain fibre (4), first collimator
(1), the second collimator (5) constitutes the fiber section of laser；
Free space portion between first collimator (1) and the second collimator (5), from the second collimator (5) to first
It is related that collimator (1) direction is disposed with the first Polarization Controller (6), polarization beam apparatus (7), birefringent filter, polarization
Isolator (9) and the second Polarization Controller (10)；
The fiber section and free space portion of laser collectively form annular chamber；
Output port of the reflected light of polarization beam apparatus (7) as laser, the asynchronous mode locking pulse of output dual wavelength；
First grating (11) and the second grating (12) are placed in parallel composition grating pair, and right-angle prism (13) is by the defeated of grating pair
Light is reverse back to grating pair out；Grating is to being set at the output port of laser, to the asynchronous mode locking arteries and veins of the dual wavelength exported
It rushes in row dispersion compensation and obtains the pulse of dual wavelength synchronizing mode-licked.
Laser diode (2) is connect with bundling device (3).
Further, birefringent filter (8) is made of birefringece crystal.
Further, gain fibre (4) is Yb dosed optical fiber.
Further, the first Polarization Controller (6) includes half wave plate (6-1) and the first quarter-wave plate (6-
2)；Half wave plate (6-1) is located at close to the side of the second collimator (5), and the first quarter-wave plate (6-2) is located at close
The side of first collimator (1).
Further, the second Polarization Controller (10) is the second quarter-wave plate (10-1).
Further, the second Polarization Controller (10) includes a half wave plate and a quarter-wave plate.
Further, the first grating (11), the second grating (12) are reflecting grating.
Further, the first grating (11), the second grating (12) are transmission grating.
Dual wavelength lock-out pulse optical fiber laser provided by the invention, the asynchronous arteries and veins of laser annular chamber output dual wavelength
Punching, by grating to dispersion compensation is carried out after pulse output, grating is to pulse spacing of changeable double-wavelength pulse, by excellent
Change the spacing between grating pair, may make asynchronous impulses to be converted into lock-out pulse, realize that the pulse of two wavelength is fully synchronized.
This optical fiber laser is additionally provided with birefringent filter, rotating birefringence penetrate optical filter, it can be achieved that different central wavelengths dual wavelength
Lock-out pulse output.
Detailed description of the invention
Fig. 1 is structure of the invention schematic illustration.
Fig. 2 is a specific implementation structural schematic diagram of the invention.
Fig. 3 is a specific implementation of the invention, optical output schematic diagram when grating is to using reflecting grating.
Fig. 4 is the spectrogram for the double-wavelength pulse that specific implementation numerical simulation of the present invention obtains.
Fig. 5 is two arteries and veins of two wavelength of the polarization beam apparatus output that specific implementation numerical simulation of the present invention obtains
Punching.
Fig. 6 be specific implementation numerical simulation of the present invention obtain through grating to the synchronous arteries and veins of dual wavelength after dispersion compensation
Punching.
In figure, 1- first collimator, 2- laser diode, 3- bundling device, 4- gain fibre, the second collimator of 5-, 6-
One Polarization Controller, 7- polarization beam apparatus, 8- birefringent filter, 9- polarization-dependent isolator, the second Polarization Controller of 10-,
The first grating of 11-, the second grating of 12-, 13- right-angle prism, 6-1- half wave plate, the first quarter-wave plate of 6-2-, 10-
The second quarter-wave plate of 1-.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawing and by specific embodiment, and following embodiment is to the present invention
Explanation, and the invention is not limited to following implementation.
As shown in Figure 1, dual wavelength lock-out pulse optical fiber laser provided by the invention, including：Laser diode 2 closes beam
Device 3, gain fibre 4, first collimator 1, the second collimator 5, the first Polarization Controller 6, polarization beam apparatus 7, birefringent optical filtering
Piece 8, polarization-dependent isolator 9, the second Polarization Controller 10, the first grating 11, the second grating 12.
Laser diode 2 is connect with bundling device 3.First collimator 1, bundling device 3, gain fibre 4 and the second collimator
5 are linked in sequence the fiber section for constituting laser.Laser diode 2 is optical-fiber coupling semiconductor laser diode, output
Pump light enters gain fibre 4 by bundling device 3, passes through energy level transition 1.0 mu m wavebands of generation after the absorption pump light of gain fibre 4
Laser.Wherein gain fibre 4 uses Yb dosed optical fiber.
First Polarization Controller 6, polarization beam apparatus 7, birefringent filter 8, polarization-dependent isolator 9 and the second polarization control
Device 10 processed is placed sequentially in the free space portion of first collimator 1 and the second collimator 5 in order, wherein the first polarization control
Device 6 processed is close to 5 one end of the second collimator, and the second Polarization Controller 10 is close to 1 one end of first collimator.
The fiber section and free space portion of laser collectively form annular chamber, and laser is collimated in annular chamber, polarized
After the processing such as adjustment, stabilized lasers are exported through the reflecting surface of polarization beam apparatus 7.
Second collimator 5 is used to be directional light by the laser alignment of optical fiber output, and first collimator 1 is used for parallel optocoupler
It is bonded to optical fiber.
First Polarization Controller 6 and the second Polarization Controller 10, for adjusting the polarization state of laser pulse.
In annular chamber, the first Polarization Controller 6, polarization-dependent isolator 9 and the second Polarization Controller 10 are collectively formed
Nonlinear polarization rotation module.Polarization beam apparatus 7, birefringent filter 8 and polarization-dependent isolator 9 collectively form filtering mould
Block.Rotating birefringence penetrates optical filter 8, and the centre frequency of dual wavelength can be changed.Wherein birefringent filter 8 uses quartz-crystal system
At.
Output port of the reflected light of polarization beam apparatus 7 as laser, the asynchronous mode locking pulse of output dual wavelength.First
Grating 11 and the second grating 12 are placed in parallel composition grating pair, and the output light of grating pair is reverse back to grating by right-angle prism (13)
It is right.Grating carries out dispersion compensation to being set at the output port of laser, to the asynchronous mode locking pulse of the dual wavelength exported,
By adjusting the spacing between grating pair, thus it is possible to vary the spacing between two pulses may make when grating is suitable to spacing
The pulse of two wavelength is completely coincident, and asynchronous mode locking pulse is converted into synchronizing mode-licked pulse, final to obtain dual wavelength synchrolock
Mould pulse.
The specific working principle is as follows for dual wavelength lock-out pulse optical fiber laser of the present invention：
Ultrashort pulse is obtained by the equivalent saturable absorption effect of nonlinear polarization rotation.Pulsed light passes through polarization beam splitting
Linearly polarized light is converted to after device 7, linearly polarized light is converted elliptically polarized light by the second subsequent polarization control module.Pulse is in light
When transmitting in fibre, the nonlinear effect of optical fiber is acted in two orthogonal polarization components, and the polarization state of pulse is made to change.By
It is that intensity is relevant in nonlinear phase shift, polarization state is no longer consistent along entire pulse.The first polarization control module is adjusted, so that arteries and veins
When punching is again by polarization-dependent isolator 9, the biggish central part of pulse strength is penetrated, and the lower marginal portion of intensity
It is most of to be reflected, to play the role of shaping pulse.
Due to the nonlinear interaction of optical fiber and the adjustment effect of polarization control module, quilt when polarization beam apparatus 7 is passed through in pulse
Shaping, central part transmitance is strong, and marginal portion transmitance is weak, and the output of polarization beam apparatus 7 practical to the reflected light outside chamber is arteries and veins
Rush the part filtered out when shaping.Also, the working condition of characteristic and laser that polarization beam apparatus 7 exports has much relations.
When nonlinear polarization rotation is stronger, pulse center part approximation nondestructively passes through polarization beam apparatus 7, the front and rear side of pulse
Edge point is reflected, at this point, the pulse outside 7 output cavity of polarization beam apparatus is divided into two pulses.
In optical fiber laser, intracavitary net dispersion is different, and pulse has different mechanism of Evolution.When optical fiber laser is intracavitary net
Dispersion is timing, and the comprehensive function of intracavitary non-linear, dispersion, gain and optical filter loss generates dissipative solitons.Dissipative solitons
For linear-chirped-pulse, the spectrum component different along correspondence before and after pulse.Therefore, when laser works are in dissipative solitons state,
And the pulse outside 7 output cavity of polarization beam apparatus, when being divided into two pulses, the spectrum of pulse is divided into two parts simultaneously, becomes corresponding
The Dual-wavelength of different center frequency.
Two pulses of the dual wavelength that polarization beam apparatus 7 exports are asynchronous in time.But since two pulses are close at this time
Like linear chrip, dispersion compensation can be carried out to pulse in space by grating, so that two pulses of two wavelength are in the time
On be completely coincident, to obtain dual wavelength lock-out pulse.
In order to more clearly state technology contents of the invention, the present embodiment is provided in a manner of next concrete implementation.
As shown in Fig. 2, the optical fiber laser includes：First collimator 1, laser diode 2, bundling device 3, gain fibre 4,
Second collimator 5, half wave plate 6-1, the first quarter-wave plate 6-2, polarization beam apparatus 7, birefringent filter 8, partially
Shake dependent isolator 9, the second quarter-wave plate 10-1, the first grating 11, the second grating 12 and right-angle prism 13.
First collimator 1, bundling device 3, gain fibre 4 and the second collimator 5 are linked in sequence, and form the optical fiber of laser
Part.Half wave plate 6-1, the first quarter-wave plate 6-2, polarization beam apparatus 7, birefringent filter 8, polarization it is related every
The free space portion between two collimators is successively placed in order from device 9 and the second quarter-wave plate 10-1, two points
One of wave plate 6-1 be located at close to the position of the second collimator 5, the second quarter-wave plate 10-1 is located at close to first collimator 1
Position.The fiber section and free space portion of laser collectively form annular chamber.
Laser diode 2 is optical-fiber coupling semiconductor laser diode 2, the 976nm pump light of output by bundling device 3 into
Enter 2m and mix ytterbium gain fibre 4, generates the laser of 1.0 mu m wavebands after the absorption pump light of gain fibre 4 by energy level transition.
Second collimator 5 is used to be directional light by the laser alignment of optical fiber output, and first collimator 1 is used for parallel optocoupler
It is bonded to optical fiber.
First quarter-wave plate 6-2 and half wave plate 6-1 forms the first Polarization Controller 6, the second a quarter
Wave plate 10-1 is the second Polarization Controller 10.First Polarization Controller 6 and the second Polarization Controller 10, for adjusting laser
The polarization state of pulse.It should be noted that the second polarizer 10 also may include a half wave plate and one four/
One wave plate.
Half wave plate 6-1, the first quarter-wave plate 6-2, polarization-dependent isolator 9 and the second quarter-wave
Piece 10-1 collectively forms nonlinear polarization rotation module.Polarization beam apparatus 7, birefringent filter 8 and polarization-dependent isolator 9
Collectively form filter module.
Output port of the reflected light of polarization beam apparatus 7 as laser, the asynchronous mode locking pulse of output dual wavelength.First
Grating 11, the second grating 12 are used to carry out dispersion compensation to two pulses of dual wavelength, between adjusting between the pulse of two wavelength
Away from.
First grating 11, the second grating 12 are used to carry out dispersion compensation to two pulses of dual wavelength, adjust two wavelength
Spacing between pulse.
Transmission grating or reflecting grating can be used in first grating 11 and the second grating 12.
When the first grating 11 and the second grating 12 are using transmission grating, the illumination of laser output is mapped to the first grating 11
It was directional light when upper, after the first grating 11 and the transmission of the second grating 12, hot spot is expanded, and right-angle prism 13 is by the second grating
12 transmitted light is reverse back to the second grating 12, and light beam is again through grating pair, the original size of hot spot boil down to, and grating is to mentioning
The dispersion values of confession double.
As shown in figure 3, the light of laser output is through first when the first grating 11 and the second grating 12 are using reflecting grating
After grating 11,12 roundtrip of the second grating, the reflected light of the second grating 12 is reverse back to the second grating 12 by right-angle prism 13.
Fig. 4 show the spectrogram for the double-wavelength pulse that this specific implementation numerical simulation obtains.Central wavelength difference
For 1051.42nm and 1067.9nm, three dB bandwidth is 1.06nm.
The dual wavelength that Fig. 5 is shown outside 7 output cavity of polarization beam apparatus that this specific implementation numerical simulation obtains is non-same
Pace pulse.The width of two pulses is 6.86ps, pulse spacing 16.4ps.
It is -0.62ps to the dispersion values of offer that Fig. 6, which show the transmission grating that this specific implementation numerical simulation obtains,2
The dipulse of Shi Chonghe.Coincidence afterpulse width is 170fs.
The above is only a preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of dual wavelength lock-out pulse optical fiber laser, which is characterized in that including：Laser diode (2), increases bundling device (3)
Beneficial optical fiber (4), first collimator (1), the second collimator (5), the first grating (11), the second grating (12), right-angle prism (13)；
Laser diode (2) is connect with bundling device (3), and bundling device (3) connects first collimator (1), another way through gain all the way
Optical fiber (4) connects the second collimator (5)；Laser diode (2), bundling device (3), gain fibre (4), first collimator (1),
The fiber section of two collimators (5) composition laser；
Free space portion between first collimator (1) and the second collimator (5), from the second collimator (5) to the first collimation
Device (1) direction is disposed with the related isolation of the first Polarization Controller (6), polarization beam apparatus (7), birefringent filter, polarization
Device (9) and the second Polarization Controller (10)；
The fiber section and free space portion of laser collectively form annular chamber；
Output port of the reflected light of polarization beam apparatus (7) as laser, the asynchronous mode locking pulse of output dual wavelength；
First grating (11) and the second grating (12) are placed in parallel composition grating pair, and right-angle prism (13) is by the output light of grating pair
It is reverse back to grating pair；Grating to being set at the output port of laser, to the asynchronous mode locking pulse of the dual wavelength exported into
Row dispersion compensation obtains the pulse of dual wavelength synchronizing mode-licked.
2. dual wavelength lock-out pulse optical fiber laser according to claim 1, which is characterized in that birefringent filter (8)
It is made of birefringece crystal.
3. dual wavelength lock-out pulse optical fiber laser according to claim 1, which is characterized in that gain fibre (4) is to mix
Ytterbium optical fiber.
4. dual wavelength lock-out pulse optical fiber laser according to claim 1, which is characterized in that the first Polarization Controller
It (6) include half wave plate (6-1) and the first quarter-wave plate (6-2)；Half wave plate (6-1) is located at close to second
The side of collimator (5), the first quarter-wave plate (6-2) are located at close to the side of first collimator (1).
5. dual wavelength lock-out pulse optical fiber laser according to claim 4, which is characterized in that the second Polarization Controller
(10) it is the second quarter-wave plate (10-1).
6. dual wavelength lock-out pulse optical fiber laser according to claim 4, which is characterized in that the second Polarization Controller
It (10) include a half wave plate and a quarter-wave plate.
7. dual wavelength lock-out pulse optical fiber laser according to claim 1, which is characterized in that the first grating (11),
Two gratings (12) are reflecting grating.
8. dual wavelength lock-out pulse optical fiber laser according to claim 1, which is characterized in that the first grating (11),
Two gratings (12) are transmission grating.
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| CN201811082089.5A CN108832471A (en) | 2018-09-17 | 2018-09-17 | A kind of dual wavelength lock-out pulse optical fiber laser |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111900596A (en) * | 2020-06-05 | 2020-11-06 | 山东大学 | Laser parameter adjusting system |
| CN115133389A (en) * | 2022-06-28 | 2022-09-30 | 广东大湾区空天信息研究院 | Solid laser based on nonlinear amplification annular mirror |
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| CN102751650A (en) * | 2012-07-09 | 2012-10-24 | 北京工业大学 | Ytterbium doped photonic crystal fiber nonlinear polarization rotation mode-locked laser device |
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