CN103166094A - High-pulse-contrast-ratio nanosecond fiber laser - Google Patents
High-pulse-contrast-ratio nanosecond fiber laser Download PDFInfo
- Publication number
- CN103166094A CN103166094A CN2013100549419A CN201310054941A CN103166094A CN 103166094 A CN103166094 A CN 103166094A CN 2013100549419 A CN2013100549419 A CN 2013100549419A CN 201310054941 A CN201310054941 A CN 201310054941A CN 103166094 A CN103166094 A CN 103166094A
- Authority
- CN
- China
- Prior art keywords
- fiber
- laser
- nanosecond
- pulse
- bundling device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses a high-pulse-contrast-ratio nanosecond fiber laser which comprises a pump laser, a pump combiner, a gain fiber, a fiber loop mirror and a fiber bragg grating. Lasers which are propagated along a fiber ring, in the clockwise direction and the counter clockwise direction, in the fiber loop mirror, are mutually intervened at the output port, the splitting ratio of the coupler is changed, power size of transmission light and reflected light can be changed, and the fiber loop mirror and the fiber bragg grating collectively form a resonant cavity. The high-pulse-contrast-ratio nanosecond fiber laser has the advantages of being compact in structure, good in stability, high in switching speed, and high in pulse contrast ratio. In addition, light leakage cannot occur when the high-pulse-contrast-ratio nanosecond fiber laser is used for marking and engraving and the like of sensitive materials, machining edges are clear, and effects are better.
Description
[technical field]
The present invention relates to a kind of nanosecond fiber laser of high impulse contrast, belong to laser technology field.
[background technology]
Single pulse energy is widely used in electronics, clothes, chip manufacturing field at the nanosecond laser pulses of the burnt magnitude of milli, especially beat the occasions such as coloured silk, flexible ceramic boring at the golden plastic cement stripping of sensitivity paint, stainless steel, particularly urgent to the demand of high impulse contrast nanosecond optical-fiber laser.The nanosecoud pulse laser that the current industrial manufacture field is commonly used mainly contains two large classes: the MOPA structure pulse laser of acousto-optic Q modulation nanosecoud pulse laser and the main amplification of seed source vibration.
Acousto-optic Q modulation nanosecoud pulse laser technology maturation, occupation rate of market is high, but be subject to transmitance and the response speed of Q switching, the pulse Temporal asymmetric, trailing edge has the hangover of hundreds of nanoseconds, still have the light leak of 100mW left and right under the laser shutdown state, be used for sensitive material and add the edge blurry in man-hour, image has ghost image.Existing Q switching is actually on the body acousto-optic crystal increases coupling fiber, is not strict full optical fibre device, and under the long-term work state, coupled fiber and crystal junction are easily aging, and the long-time stability of acoustooptic Q-switching still need be improved.
The advantages such as the nanosecoud pulse laser of MOPA structure has pulse duration and repetition rate is tunable, and pulse shape is controlled, and the parameter adjustable extent is large, but because the power output of semiconductor seed source is little, generally need to adopt the structure of a plurality of amplifier cascades, cost is high, system's relative complex.In multistage amplification process, easily produce the amplified spont-aneous emission noise, cause direct current light background, deteriorated pulse contrast causes the pulse distortion.Simultaneously, some nonlinear effects relevant to length in optical fiber, as stimulated Raman scattering, also the increase with optical fiber link strengthens, and even burns out optical fiber when serious.
Therefore, be necessary to solve as above problem.
[summary of the invention]
The present invention has overcome the deficiency of above-mentioned technology, a kind of nanosecond fiber laser of high impulse contrast is provided, be connected to form in turn laserresonator by fiber grating, gain fibre, fiber loop mirror, by changing fiber loop mirror fiber turns polarization state, obtain the resonant cavity that output is more adjustable than flexibly, pulse duration is variable, realize the nanosecond laser output of high impulse contrast, it has compact conformation, the time domain hangover is little, the advantage that long-time stability are good.
For achieving the above object, the present invention has adopted following technical proposal:
a kind of nanosecond fiber laser of high impulse contrast, include pump laser 2, the pulse modulated circuit 1 that is used for driving the pump laser 2 required pump lights of output that is connected with pump laser 2, the fiber grating 4 of antiradar reflectivity, gain fibre 5 for generation of the required population inversion of laser gain, and has saturated absorption for the fiber loop mirror 6 of edge hangover after suppressor pulse, described fiber grating 4 is connected to form laserresonator by gain fibre 5 and fiber loop mirror 6, also be provided with on laserresonator for the pump light coupling of pump laser 2 being injected the bundling device 3 of laserresonator, described bundling device 3 is provided with one and closes Shu Duan, one pump light input and a signal incident end, described pump laser 2 outputs are connected with bundling device 3 pump light inputs.
As optimizing embodiment, described bundling device 3 is arranged on fiber grating 4 away from an end of fiber loop mirror 6, and the Shu Duanyu fiber grating 4 that closes of bundling device 3 connects, and the signal incident end of bundling device 3 is as the nanosecond pulse output.
As optimizing embodiment, described bundling device 3 is arranged between fiber grating 4 and gain fibre 5, the Shu Duanyu gain fibre 5 that closes of bundling device 3 connects, and the signal incident end of bundling device 3 is connected with fiber grating 4, and fiber grating 4 other ends are as the nanosecond pulse output.
As optimizing embodiment, also be provided with the fiber coupler 9 for coupling output between described gain fibre 5 and fiber loop mirror 6, described fiber coupler 9 is provided with an input, a high coupling ratio output and a low coupling ratio output, the input of fiber coupler 9 is connected with fiber loop mirror 6, the high coupling ratio output of fiber coupler 9 is connected with gain fibre 5, and the low coupling ratio output of fiber coupler 9 is as the nanosecond pulse output.
As optimization, described fiber loop mirror 6 adopts directed fiber coupler, and described fiber coupler two output ports are joined together to form the loop part of fiber loop mirror 6.
As optimization, the optical fiber 7 of nonlinear effect intensity and the polarization state that is used for changing in the chamber change the pulse duration of output pulse and the Polarization Controller 8 of power in the loop of fiber loop mirror 6 part also is provided with for increasing the chamber.
Single mode or double clad gain fibre that gain fibre 5 as above is the doped rare earth element ion.
Compared with prior art, the invention has the beneficial effects as follows:
1, fiber loop mirror is full optical fibre device, and insertion loss is little, dependable performance.
2, the pumping pulse of microsecond magnitude is at the Gain modulation of gain fibre, and the acting in conjunction of fiber loop mirror saturated absorption, obtains the nanosecond pulse that pulsewidth is narrower, threshold value is lower, contrast is higher.
3, in fiber turns, the opposite two-beam ripple in the direction of propagation interferes effect at the fiber loop mirror output port, and the pulse trailing edge is more precipitous, and the time domain hangover is little.
4, change the coupling ratio of fiber coupler, perhaps change the fiber turns polarization state of annular mirror, change the switching time of the reflection of fiber loop mirror and transmissivity, fiber loop mirror etc. thereupon, can obtain output more adjustable than flexibly, the resonant cavity that pulse duration is variable.
[description of drawings]
Fig. 1 is embodiments of the invention 1 structure principle charts.
Fig. 2 is embodiments of the invention 2 structure principle charts.
Fig. 3 is embodiments of the invention 3 structure principle charts.
[embodiment]
Feature of the present invention and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that technical staff's of the same trade understanding:
Embodiment 1:
As shown in Figure 1, a kind of nanosecond fiber laser of high impulse contrast includes pulse modulated circuit 1, pump laser 2, bundling device 3, fiber grating 4, gain fibre 5 and fiber loop mirror 6.
Described pump laser 2 is semiconductor laser, and centre wavelength is corresponding with the absorption line of gain fibre 5.
Described bundling device 3 is wavelength division multiplexer or high power bundling device.
Single mode or double clad gain fibre that described gain fibre 5 is the doped rare earth element ion.
The fiber turns loop part that described fiber loop mirror 6 comprises a directed fiber coupler and is joined together to form by these coupler two output ports, coupler are that splitting ratio draws tapered full optical fibre device arbitrarily.
Mutually interfere at output port with the laser of counterclockwise propagating in a clockwise direction along fiber turns loop part in fiber loop mirror 6, change the splitting ratio of directed fiber coupler, can change transmitted light and catoptrical watt level.Fiber loop mirror 6 compact conformations, dependable performance, easily be connected with optical fiber, be equivalent to output than adjustable laser resonant cavity speculum.Properties in nonlinear optical loop mirror is equivalent to saturated absorbing body, and its fast response time is applied to the laser that laser can produce the high impulse contrast.
under the driving of pulse modulated circuit 1, pump laser 2 produces time domain width microsecond magnitude, the pump light that centre wavelength is corresponding with the absorption line of gain fibre 5, pump light is through bundling device 3, see through fiber grating 4, be coupled to gain fibre 5, gain fibre 5 automodulations produce small-pulse effect, directed fiber coupler by fiber loop mirror 6 enters fiber turns, the light wave that enters fiber turns is divided into transmission in opposite direction, the discrepant two-beam of intensity, the light path of this two-beam in optical fiber is identical, but due in optical fiber from phase-modulation, the nonlinear phase shift that the nonlinear effects such as Cross-phase Modulation cause is different, two-beam produces coherent interference in directed fiber coupler, be equivalent to saturable absorbing mirror.Light wave through gain fibre 5, incides fiber grating 4 after fiber loop mirror 6 reflections.Adopt the lower fiber grating 4 of reflectivity, part laser is from fiber grating 4 transmissions, through bundling device 3, from the signal incident end output of bundling device 3.Fiber grating 4 and fiber loop mirror 6 are equivalent to two chamber mirrors, form laserresonator; Gain fibre 5 is under the effect of impulse type pump light, and the effect of its gain modulation is equivalent to optical switch, forms pulse output.Employing has the fiber loop mirror 6 of saturated absorption as a chamber mirror of resonant cavity, along the generation of hangover, obtains the nanosecond pulse of high impulse contrast after the energy suppressor pulse.
Embodiment 2:
As shown in Figure 2, a kind of nanosecond fiber laser of high impulse contrast includes pulse modulated circuit 1, pump laser 2, bundling device 3, fiber grating 4, gain fibre 5 and fiber loop mirror 6.
Described pump laser 2 is semiconductor laser, and centre wavelength is corresponding with gain fibre 5 gain media absorption lines.
Described bundling device 3 is wavelength division multiplexer or high power bundling device.
Single mode or double clad gain fibre that described gain fibre 5 is the doped rare earth element ion.
The fiber turns loop part that described fiber loop mirror 6 comprises a directed fiber coupler and is joined together to form by these coupler two output ports, coupler are that splitting ratio draws tapered full optical fibre device arbitrarily.
Under the driving of pulse modulated circuit 1, pumping half laser 2 produces time domain width microsecond magnitude, the pump light that centre wavelength is corresponding with gain fibre 5 gain media absorption lines, pump light is through bundling device 3, be coupled to gain fibre 5, the gain fibre spontaneous radiation produces small-pulse effect, enter into fiber turns by directed fiber coupler on fiber loop mirror 6, the light wave that enters fiber turns is divided into transmission, the discrepant two-beam of intensity in opposite direction.The light path of this two-beam in optical fiber is identical, but because the nonlinear phase shift that causes from nonlinear effects such as phase-modulation, Cross-phase Modulations in optical fiber is different, two-beam produces coherent interference in directed fiber coupler, be equivalent to the nonlinear optical switch.Light wave successively passes through gain fibre 5, bundling device 3 after fiber loop mirror 6 reflections, incide fiber grating 4.Fiber grating 4 and fiber loop mirror 6 are equivalent to two chamber mirrors, form laserresonator; Gain fibre 5 is under the effect of impulse type pump light, and the effect of its gain modulation is equivalent to optical switch, forms pulse output.Employing has the fiber loop mirror 6 of saturated absorption as a chamber mirror of resonant cavity, along the generation of hangover, obtains the nanosecond pulse of high impulse contrast after the energy suppressor pulse.
Embodiment 3:
As shown in Figure 3, a kind of nanosecond fiber laser of high impulse contrast includes pulse modulated circuit 1, pump laser 2, bundling device 3, fiber grating 4, gain fibre 5, fiber loop mirror 6, optical fiber 7, Polarization Controller 8, fiber coupler 9.
Described pump laser 2 is semiconductor laser, and centre wavelength is corresponding with gain fibre 5 gain media absorption lines.
Described bundling device 3 is wavelength division multiplexer or high power bundling device.
Single mode or double clad gain fibre that described gain fibre 5 is the doped rare earth element ion.
The fiber turns loop part that described fiber loop mirror 6 comprises a directed fiber coupler and is joined together to form by these coupler two output ports, coupler is that splitting ratio draws tapered full optical fibre device arbitrarily, optical fiber 7 and Polarization Controller 8 are arranged on fiber turns loop part, Polarization Controller is manual or electronic control type device, and the polarization state that changes in the chamber changes pulse duration and the power of exporting pulse.
Under the driving of pulse modulated circuit 1, pump laser 2 produces time domain width microsecond magnitude, the pump light that centre wavelength is corresponding with gain fibre 5 gain media absorption lines, pump light is coupled to gain fibre 5 through bundling device 3, gain fibre 5 spontaneous radiations, produce small-pulse effect, through coupler 9, fiber loop mirror 6, enter into fiber turns loop part, the light wave that enters fiber turns is divided into transmission, the discrepant two-beam of intensity in opposite direction.The light path of this two-beam in optical fiber is identical, but because the nonlinear phase shift that causes from nonlinear effects such as phase-modulation, Cross-phase Modulations in optical fiber is different, two-beam produces coherent interference in directed fiber coupler, be equivalent to non-linear saturated absorbing body.Optical fiber 7 in fiber turns works to increase nonlinear effect intensity in the chamber, regulate Polarization Controller 8, change the polarization state in the chamber, can regulate in fiber turns along phase difference clockwise and the counter clockwise direction propagates light, final pulse duration and the power of exporting pulse that changes.Light wave is through fiber loop mirror 6 reflections, and part is from an end output of coupler 9 low coupling ratios, and another part is through an end of coupler 9 high coupling ratios, again successively through gain fibre 5, another beam splitting end of bundling device 3 incides fiber grating 4, is reflected by fiber grating 4.Fiber grating 4 and fiber loop mirror 6 are equivalent to two chamber mirrors, form laserresonator; Gain fibre 5 is under the effect of impulse type pump light, and the effect of its gain modulation is equivalent to optical switch, forms pulse output.Employing has the fiber loop mirror 6 of saturated absorption as a chamber mirror of resonant cavity, along the generation of hangover, obtains the nanosecond pulse of high impulse contrast after the energy suppressor pulse.
As mentioned above; what the present invention protected is a kind of nanosecond fiber laser of high impulse contrast; fiber grating 4 is connected to form laserresonator by gain fibre 5 and fiber loop mirror 6; by changing fiber loop mirror 6 fiber turns polarization states; obtain the resonant cavity that output is more adjustable than flexibly, pulse duration is variable, realize the nanosecond laser output of high impulse contrast, it has compact conformation; the time domain hangover is little, the advantage that long-time stability are good.The technical scheme that all or this case embodiments identical with this case structure are equal to replacement all should be shown in the protection range that falls into this case.
Claims (9)
1. the nanosecond fiber laser of a high impulse contrast, it is characterized in that: include pump laser (2), the pulse modulated circuit (1) that is used for driving the required pump light of pump laser (2) output that is connected with pump laser (2), the fiber grating of antiradar reflectivity (4), gain fibre (5) for generation of the required population inversion of laser gain, and has saturated absorption for the fiber loop mirror (6) of edge hangover after suppressor pulse, described fiber grating (4) is connected to form laserresonator by gain fibre (5) and fiber loop mirror (6), also be provided with on laserresonator for the pump light coupling of pump laser (2) being injected the bundling device (3) of laserresonator, described bundling device (3) is provided with one and closes Shu Duan, one pump light input and a signal incident end, described pump laser (2) output is connected with bundling device (3) pump light input.
2. the nanosecond fiber laser of a kind of high impulse contrast according to claim 1, it is characterized in that described bundling device (3) is arranged on fiber grating (4) away from an end of fiber loop mirror (6), the Shu Duanyu fiber grating (4) that closes of bundling device (3) connects, and the signal incident end of bundling device (3) is as the nanosecond pulse output.
3. the nanosecond fiber laser of a kind of high impulse contrast according to claim 1, it is characterized in that described bundling device (3) is arranged between fiber grating (4) and gain fibre (5), the Shu Duanyu gain fibre (5) that closes of bundling device (3) connects, the signal incident end of bundling device (3) is connected with fiber grating (4), and fiber grating (4) other end is as the nanosecond pulse output.
4. the nanosecond fiber laser of a kind of high impulse contrast according to claim 1, it is characterized in that also being provided with between described gain fibre (5) and fiber loop mirror (6) fiber coupler (9) for coupling output, described fiber coupler (9) is provided with an input, one high coupling ratio output and a low coupling ratio output, the input of fiber coupler (9) is connected with fiber loop mirror (6), the high coupling ratio output of fiber coupler (9) is connected with gain fibre (5), the low coupling ratio output of fiber coupler (9) is as the nanosecond pulse output.
5. the nanosecond fiber laser of a kind of high impulse contrast according to claim 1, it is characterized in that described fiber loop mirror (6) adopts directed fiber coupler, described fiber coupler two output ports are joined together to form the loop part of fiber loop mirror (6).
6. the nanosecond fiber laser of a kind of high impulse contrast according to claim 5, is characterized in that the optical fiber (7) of nonlinear effect intensity in the loop part of fiber loop mirror (6) also is provided with for increasing the chamber and the polarization state that is used for changing in the chamber change the pulse duration of output pulse and the Polarization Controller (8) of power.
7. the nanosecond fiber laser of a kind of high impulse contrast according to claim 1, is characterized in that described pump laser (2) is semiconductor laser.
8. the nanosecond fiber laser of a kind of high impulse contrast according to claim 1, is characterized in that described bundling device (3) is wavelength division multiplexer or high power bundling device.
9. the nanosecond fiber laser of a kind of high impulse contrast according to claim 1, is characterized in that described gain fibre (5) is the single mode of doped rare earth element ion or double clad gain fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100549419A CN103166094A (en) | 2013-02-20 | 2013-02-20 | High-pulse-contrast-ratio nanosecond fiber laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100549419A CN103166094A (en) | 2013-02-20 | 2013-02-20 | High-pulse-contrast-ratio nanosecond fiber laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103166094A true CN103166094A (en) | 2013-06-19 |
Family
ID=48588945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100549419A Pending CN103166094A (en) | 2013-02-20 | 2013-02-20 | High-pulse-contrast-ratio nanosecond fiber laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103166094A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110380328A (en) * | 2019-08-02 | 2019-10-25 | 武汉光至科技有限公司 | A kind of fiber oscillator device |
| CN114050469A (en) * | 2022-01-13 | 2022-02-15 | 北京凯普林光电科技股份有限公司 | Integrated device for optical fiber laser and manufacturing and testing method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050084208A1 (en) * | 2003-09-06 | 2005-04-21 | Kim Ho Y. | Modulation frequency tunable optical oscillator |
| CN201213262Y (en) * | 2008-07-04 | 2009-03-25 | 北京交通大学 | Tunable microwave/millimeter wave generator for optical fiber |
| CN101907495A (en) * | 2010-07-14 | 2010-12-08 | 北京交通大学 | Fiber bragg grating wavelength demodulation system with long-period fiber bragg grating Sagnac loop |
| CN102227043A (en) * | 2011-05-10 | 2011-10-26 | 中国科学院上海光学精密机械研究所 | linearly polarized light fiber laser base on polarization maintaining fiber polarization maintaining fiber annular mirror |
| CN102359943A (en) * | 2011-06-23 | 2012-02-22 | 天津大学 | Photonic crystal fibre-optical air chamber active cavity absorption-type gas detection device |
| CN102625923A (en) * | 2009-08-28 | 2012-08-01 | Nkt光子学有限公司 | Pulsed fiber laser |
| CN203056359U (en) * | 2013-02-20 | 2013-07-10 | 广东汉唐量子光电科技有限公司 | Nanosecond optical fiber laser device with high pulse contrast |
-
2013
- 2013-02-20 CN CN2013100549419A patent/CN103166094A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050084208A1 (en) * | 2003-09-06 | 2005-04-21 | Kim Ho Y. | Modulation frequency tunable optical oscillator |
| CN201213262Y (en) * | 2008-07-04 | 2009-03-25 | 北京交通大学 | Tunable microwave/millimeter wave generator for optical fiber |
| CN102625923A (en) * | 2009-08-28 | 2012-08-01 | Nkt光子学有限公司 | Pulsed fiber laser |
| CN101907495A (en) * | 2010-07-14 | 2010-12-08 | 北京交通大学 | Fiber bragg grating wavelength demodulation system with long-period fiber bragg grating Sagnac loop |
| CN102227043A (en) * | 2011-05-10 | 2011-10-26 | 中国科学院上海光学精密机械研究所 | linearly polarized light fiber laser base on polarization maintaining fiber polarization maintaining fiber annular mirror |
| CN102359943A (en) * | 2011-06-23 | 2012-02-22 | 天津大学 | Photonic crystal fibre-optical air chamber active cavity absorption-type gas detection device |
| CN203056359U (en) * | 2013-02-20 | 2013-07-10 | 广东汉唐量子光电科技有限公司 | Nanosecond optical fiber laser device with high pulse contrast |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110380328A (en) * | 2019-08-02 | 2019-10-25 | 武汉光至科技有限公司 | A kind of fiber oscillator device |
| CN114050469A (en) * | 2022-01-13 | 2022-02-15 | 北京凯普林光电科技股份有限公司 | Integrated device for optical fiber laser and manufacturing and testing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5479291A (en) | Non-linear optical interferometer with saturated amplifier | |
| CN100430815C (en) | Adjustable light pulse time-delay device with wide bandwidth and multiple gains based on stimulated brillouin scatter | |
| US20180019564A1 (en) | Transient bragg gratings in optical waveguides and their applications | |
| CN108767637B (en) | THz high repetition frequency high power femtosecond optical fiber laser based on scattered wave | |
| US20090296759A1 (en) | Sequentially-modulated diode-laser seed-pulse generator | |
| KR19980022444A (en) | Passive Mode Locking Fiber Laser Structure | |
| CN103151684A (en) | Pulse pump type standing wave resonant cavity nanosecond pulse laser | |
| CN109713562B (en) | Random fiber laser based on random Brillouin dynamic grating | |
| CN104409954A (en) | 1.5 micrometer nanosecond pulse double pass and double clad fiber amplifier | |
| KR20180076521A (en) | Optical pulse laser with low repetition rate and driving method of the same | |
| Cuadrado-Laborde et al. | Experimental study of an all-fiber laser actively mode-locked by standing-wave acousto-optic modulation | |
| CN112117629A (en) | All-fiber high-order mode Brillouin erbium-doped laser based on acousto-optic device | |
| KR101915750B1 (en) | Optical pulse laser with low repetition rate and driving method of the same | |
| CN203607667U (en) | Ultrashort pulse all-fiber laser device | |
| CN103166094A (en) | High-pulse-contrast-ratio nanosecond fiber laser | |
| CN110676676B (en) | Pulse light source system and method for generating soliton explosion mode | |
| CN203056358U (en) | Pulse pumping type standing wave resonant cavity nanosecond pulse laser device | |
| CN104836106A (en) | Miniature solid mode locked laser | |
| CN203056359U (en) | Nanosecond optical fiber laser device with high pulse contrast | |
| CN103606807A (en) | Ultrashort pulse all-fiber laser device | |
| CN203150894U (en) | Pulse pump type annular resonant cavity nanosecond pulse laser device | |
| CN108879300B (en) | Supercontinuum light source system and method based on double-constraint mode-locked pulse pumping | |
| CN105390919A (en) | Method for obtaining high-repetition-frequency large-energy tunable laser | |
| CN103199414A (en) | Pulse pumping type annular resonant cavity nanosecond pulse laser | |
| CN105322419B (en) | A kind of pulse optical fiber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130619 |