CN103138146A - All-fiber laser with ultralow threshold value self-starting mode locking - Google Patents
All-fiber laser with ultralow threshold value self-starting mode locking Download PDFInfo
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- CN103138146A CN103138146A CN201310057034XA CN201310057034A CN103138146A CN 103138146 A CN103138146 A CN 103138146A CN 201310057034X A CN201310057034X A CN 201310057034XA CN 201310057034 A CN201310057034 A CN 201310057034A CN 103138146 A CN103138146 A CN 103138146A
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Abstract
The invention discloses an all-fiber laser with an ultralow threshold value self-starting mode locking. A semiconductor saturable absorber mirror (SESAM) and a Sagnac annular nonlinear reflector which are packaged with optical fibers are utilized to establish the all-fiber laser. Based on the fact that Sagnac interference produces nonlinear reflection which has clamp effect on the peak power in an optical fiber laser cavity, the saturable absorption threshold value in the optical fiber laser cavity is reduced, the ultralow threshold value self-starting mode locking which is low in pulse fluctuation, free of external interference and stable in the long term is achieved, probable damages on the SESAM are avoided, adverse effect on pulse width from spectrum distortion induced by nonlinear effect in the optical fiber laser cavity and an optical fiber nonlinear integral B is overcome, and output pulses are easily compressed to obtain femtosecond pulses. Pump light is added, the width of optical fiber laser output pulses becomes larger, the output pulse width can be conveniently tuned through the adjustment on pump light power to obtain microsecond pulses, and the all-fiber laser with the ultralow threshold value the self-starting mode locking is suitable for the mode locking of low repetition frequency optical fiber lasers.
Description
[technical field]
The present invention relates to a kind of full-optical-fiber laser of ultralow threshold value self-starting locked mode, belong to laser technology field.
[background technology]
Fiber laser has advantages of that volume is little, lightweight, it is integrated to be easy to.Fiber laser is amplified the laser pulse that can obtain high power, stable performance as seed source.Can be applied in the fields such as industrial cutting, laser marking, laser weapon, biological detection.for adopting the nonlinear polarization rotation effect to realize the fiber laser of locked mode, due to the non-linear relation between the polarization angle that has utilized light pulse and luminous intensity, can realize locked mode so need higher pumping light power, and this fiber laser can not be realized the self-starting locked mode under lower pump power, and the state that can not guarantee at every turn to start locked mode is all identical, stability is bad, caused great inconvenience in commercial Application, limited its range of application, the laser of nonlinear polarization rotation locked mode need to be regulated manually Polarization Controller and realize locked mode in addition, trivial operations, this has also caused this laser cost of labor aborning high, be unfavorable for applying.
For existing semiconductor saturable absorption speculum (be called for short: the SESAM) fiber laser of locked mode, in the laser operation process, the zone of laser long-term irradiation SESAM, the useful life that can reduce SESAM.If can reduce the pumping threshold of locked mode, reduce the light intensity that SESAM bears, can extend the life-span of SESAM mode-locked laser.And the laser of simple SESAM locked mode is difficult to obtain the mode locking pulse of low-repetition-frequency.and (be called for short: Sagnac) for annular non-linear reflector, it can be by utilizing the nonlinear phase shift of light in annular mirror, the light of varying strength produces different phase-shift phases, when light intensity makes phase shift be π, maximum transmitance can be arranged, the transmitance of the light of other intensity is less, this has been equivalent to obtain the character of saturable absorber, and can have lower locked mode threshold value, the stability of pulse is also very superior, but due to the simple laser that uses annular non-linear reflector, need to add Polarization Controller to complete locked mode in the chamber, so its use inconvenience the same as the nonlinear polarization rotation locked mode.
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 full-optical-fiber laser of ultralow threshold value self-starting locked mode is provided, its by in a laser cavity in conjunction with the mode of semiconductor saturable absorption speculum and two kinds of pulses that narrow of annular non-linear reflector, make laser have both advantages concurrently, can either realize self-starting, can obtain stable mode locking pulse again, also have very low pumping threshold, can extend the useful life of semiconductor saturable absorption speculum.The laser of this structure also has pulse duration can regulate, can realize the advantages such as low-repetition-frequency output, exportable Gaussian spectrum, and pass through semiconductor saturable absorbing mirror and fibre-optic package, can realize the mode-locked laser of full optical fiber, the output pulse further can obtain the femtosecond magnitude after compression, can amplify as the seed source of performance high-quality, be used for the fields such as industrial cutting, military weapon, biomolecule detection, light spectrum image-forming.
For achieving the above object, the present invention has adopted following technical proposal:
a kind of full-optical-fiber laser of ultralow threshold value self-starting locked mode, include the pumping source 1 for generation of pump light, gain fibre 3 for generation of the required population inversion of laser gain, be used for non-linear absorption, induce the semiconductor saturable absorption speculum 4 of locked mode self-starting, and be used for nonlinear reflection to clamp down on the annular non-linear reflector 6 of locked mode pulse peak power in laser cavity, described annular non-linear reflector 6 incident ends are connected to form laserresonator by gain fibre 3 and semiconductor saturable absorption speculum 4, be provided with on laserresonator for the pump light with pumping source 1 and inject the wavelength division multiplexer 2 of laserresonator and be used for the fiber coupler 5 that mode locking pulse is exported in coupling, described wavelength division multiplexer 2 is provided with a pump light input, one signal incident end and a multiplexing end, the pump light input of described wavelength division multiplexer 2 is connected with pumping source 1 output, the signal incident end of wavelength division multiplexer 2, multiplexing end is connected in laserresonator, described fiber coupler 5 is provided with an input, one straight-through output and a coupling output, the input of fiber coupler 5, straight-through output is connected in laserresonator, the coupling output of fiber coupler 5 is as the mode locking pulse output.
As optimizing embodiment, described wavelength division multiplexer 2, fiber coupler 5 all are arranged between annular non-linear reflector 6 and gain fibre 3, fiber coupler 5 inputs are connected with annular non-linear reflector 6 incident ends, the straight-through output of fiber coupler 5 is connected with the signal incident end of wavelength division multiplexer 2, and the multiplexing end of wavelength division multiplexer 2 is connected with gain fibre 3.
As optimizing embodiment, described wavelength division multiplexer 2 is arranged between annular non-linear reflector 6 and gain fibre 3, described fiber coupler 5 is arranged between gain fibre 3 and semiconductor saturable absorption speculum 4, the signal incident end of wavelength division multiplexer 2 is connected with annular non-linear reflector 6 incident ends, the multiplexing end of wavelength division multiplexer 2 is connected with gain fibre 3 one ends, gain fibre 3 other ends are connected with the input of fiber coupler 5, and the straight-through output of fiber coupler 5 is connected with semiconductor saturable absorption speculum 4.
As optimizing embodiment, described wavelength division multiplexer 2 is arranged between annular non-linear reflector 6 and gain fibre 3, described fiber coupler 5 is arranged between gain fibre 3 and semiconductor saturable absorption speculum 4, the signal incident end of wavelength division multiplexer 2 is connected with annular non-linear reflector 6 incident ends, the multiplexing end of wavelength division multiplexer 2 is connected with gain fibre 3 one ends, gain fibre 3 other ends are connected with the straight-through output of fiber coupler 5, and the input of fiber coupler 5 is connected with semiconductor saturable absorption speculum 4.
As optimizing embodiment, described wavelength division multiplexer 2 is arranged between semiconductor saturable absorption speculum 4 and gain fibre 3, described fiber coupler 5 is arranged between gain fibre 3 and annular non-linear reflector 6, the signal incident end of wavelength division multiplexer 2 is connected with semiconductor saturable absorption speculum 4, the multiplexing end of wavelength division multiplexer 2 is connected with gain fibre 3 one ends, gain fibre 3 other ends are connected with the straight-through output of fiber coupler 5, and the input of fiber coupler 5 is connected with annular non-linear reflector 6 incident ends.
As optimizing embodiment, described fiber coupler 5, wavelength division multiplexer 2 all are arranged between semiconductor saturable absorption speculum 4 and gain fibre 3, the input of fiber coupler 5 is connected with semiconductor saturable absorption speculum 4, the straight-through output of fiber coupler 5 is connected with the signal input part of wavelength division multiplexer 2, and the multiplexing end of wavelength division multiplexer 2 is connected with gain fibre 3.
Annular non-linear reflector as above 6 is for connecting and composing by two outputs with the fiber coupler of 2 * 2, and annular non-linear reflector 6 is provided with a residue end that can be used for exporting mode locking pulse.
As optimization, the loop of described annular non-linear reflector 6 partly is provided with for increasing the monomode fiber 7 of chamber length with the repetition rate of adjusting laser.
Compared with prior art, the invention has the beneficial effects as follows:
1, the pumping light power threshold value of this laser is low, only needs very low pumping light power just can realize locked mode, can reduce the nonlinear effect in laser cavity.
2, this laser utilizes semiconductor saturable absorption speculum and fibre-optic package to realize the mode-locked laser of full optical fiber, add annular non-linear reflector in fiber laser cavity, the nonlinear reflection of annular non-linear reflector helps to reduce the threshold value of saturated absorption, form stable locked mode self-starting, do not need artificial adjustment, easy to use, be fit to suitability for industrialized production.
3, the nonlinear reflectivity of this laser utilization annular non-linear reflector produces to peak power in fiber laser cavity the effect of clamping down on, guarantee the high stability of self-starting mode locking pulse, obtain the mode locking pulse sequence of good stability, reduce simultaneously mode locking pulse intensity fluctuation and phase noise.
4, the non-linear annular reflection of this laser utilization annular non-linear reflector realizes that the mode locking pulse peak power clamps down on, and is beneficial to overcome the pulse fluctuation to the possible damage of semiconductor saturable absorption speculum.
5, this laser can come regulating impulse width easily by regulating pumping light power, increases pump light, and the optical-fiber laser output pulse width broadens.
6, this laser locked mode self-starting under low pumping threshold can overcome the impact of nonlinear fiber B integration pulse-width, and the output pulse is easy to compression, obtains the high pure femtosecond pulse of pulse contrast.
7, this laser is realized the self-starting locked mode of ultralow threshold value, is fit to the locked mode of low-repetition-frequency optical-fiber laser; Can by increase the monomode fiber of hundreds of rice in the chamber, realize the laser pulse output lower than the 1MHz repetition rate.
8, this laser locked mode self-starting under low pumping threshold can overcome the spectrum distortion that in optical fiber cavity, nonlinear effect may be induced, and output is without the Gaussian spectrum of spectrum distortion.
[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.
Fig. 4 is embodiments of the invention 4 structure principle charts.
Fig. 5 is embodiments of the invention 5 structure principle charts.
[embodiment]
Be described in further detail below in conjunction with accompanying drawing and embodiments of the present invention:
a kind of full-optical-fiber laser of ultralow threshold value self-starting locked mode, include the pumping source 1 for generation of pump light, gain fibre 3 for generation of the required population inversion of laser gain, be used for non-linear absorption, induce the semiconductor saturable absorption speculum 4 of locked mode self-starting, and be used for nonlinear reflection to clamp down on the annular non-linear reflector 6 of locked mode pulse peak power in laser cavity, described annular non-linear reflector 6 incident ends are connected to form laserresonator by gain fibre 3 and semiconductor saturable absorption speculum 4, be provided with on laserresonator for the pump light with pumping source 1 and inject the wavelength division multiplexer 2 of laserresonator and be used for the fiber coupler 5 that mode locking pulse is exported in coupling, described wavelength division multiplexer 2 is provided with a pump light input, one signal incident end and a multiplexing end, the pump light input of described wavelength division multiplexer 2 is connected with pumping source 1 output, the signal incident end of wavelength division multiplexer 2, multiplexing end is connected in laserresonator, described fiber coupler 5 is provided with an input, one straight-through output and a coupling output, the input of fiber coupler 5, straight-through output is connected in laserresonator, the coupling output of fiber coupler 5 is as the mode locking pulse output.
Wavelength division multiplexer 2 as above and fiber coupler 5 can be arranged on the diverse location of laserresonator, wavelength division multiplexer 2 is used for the pump light of pumping source 1 is injected laserresonator, fiber coupler 5 is used for coupling output mode locking pulse, and its specific embodiment has following 5 kinds.
Embodiment 1:
As shown in Figure 1, the present embodiment provides the full-optical-fiber laser of the ultralow threshold value locked mode self-starting of a kind of Yb of mixing, but the gain fibre of this structure is not limited to Yb-doped fiber, also can use doped fiber or the Raman gain optical fiber of other rare earth ions.
In the present embodiment, laser adopt pumping source 1, the 976nm/1040nm of 976nm wavelength division multiplexer 2, mix Yb single mode gain fibre 3, semiconductor saturable absorption speculum 4, the fiber coupler 5 of 30:70, annular non-linear reflector 6, HI1060 monomode fiber 7.
Described wavelength division multiplexer 2, fiber coupler 5 all are arranged between annular non-linear reflector 6 and gain fibre 3, fiber coupler 5 inputs are connected with annular non-linear reflector 6 incident ends, the straight-through output of fiber coupler 5 is connected with the signal incident end of wavelength division multiplexer 2, and the multiplexing end of wavelength division multiplexer 2 is connected with gain fibre 3.
The specific works process: the pumping source 1 that wavelength is 976nm connects the pump light input of the wavelength division multiplexer 2 of 976nm/1040nm, input pumping light; The multiplexing end of wavelength division multiplexer 2 is connected with single mode gain fibre 3 one ends of mixing Yb, pump light is injected in gain fibre 3 produces population inversion; Mix Yb gain fibre 3 other ends and a block semiconductor saturable absorption speculum 4 is used the optics glue bond, the operation wavelength of semiconductor saturable absorption speculum 4 is 1040nm, and trap is 40%, and the relaxation time is 500fs, semiconductor saturable absorption speculum 4 produces non-linear absorption, causes locked mode; 976nm/1040nm wavelength division multiplexer 2 signal incident ends are connected with 70% end of the fiber coupler 5 of the 30:70 splitting ratio of an operation wavelength 1040nm, 30% end of 30:70 fiber coupler is as coupling output output mode locking pulse, the input of fiber coupler 5 is connected with annular non-linear reflector 6 incident ends, annular non-linear reflector 6 is fused into by the fiber coupler of the 25:75 splitting ratio of operation wavelength 1040nm, and the residue end of annular non-linear reflector 6 also can be used as output output mode locking pulse; Increase the chamber at the HI1060 monomode fiber 7 of the loop part welding 200m of annular non-linear reflector 6 long, obtain the fiber pulse laser lower than the 1MHz repetition rate.
Embodiment 2:
As shown in Figure 2, the present embodiment provides the full-optical-fiber laser of the ultralow threshold value locked mode self-starting of a kind of Er of mixing, but the gain fibre of this structure is not limited to Er-doped fiber, also can use doped fiber or the Raman gain optical fiber of other rare earth ions.
In the present embodiment, laser adopt 976nm pumping source 1,976nm/1550nm wavelength division multiplexer 2, mix Er single mode gain fibre 3, semiconductor saturable absorption speculum 4, the fiber coupler 5 of 30:70, annular non-linear reflector 6, SMF-28 monomode fiber 7.
Described wavelength division multiplexer 2 is arranged between annular non-linear reflector 6 and gain fibre 3, described fiber coupler 5 is arranged between gain fibre 3 and semiconductor saturable absorption speculum 4, the signal incident end of wavelength division multiplexer 2 is connected with annular non-linear reflector 6 incident ends, the multiplexing end of wavelength division multiplexer 2 is connected with gain fibre 3 one ends, gain fibre 3 other ends are connected with the input of fiber coupler 5, and the straight-through output of fiber coupler 5 is connected with semiconductor saturable absorption speculum 4.
The specific works process: the pumping source 1 that wavelength is 976nm connects the pump light input of the wavelength division multiplexer 2 of 976nm/1550nm, input pumping light; The multiplexing end of wavelength division multiplexer 2 is connected with single mode gain fibre 3 one ends of mixing Er, pump light is injected into to mix in gain fibre 3 produce population inversion; Gain fibre 3 other ends are connected with the input of the fiber coupler 5 of the 30:70 splitting ratio of an operation wavelength 1550nm, 30% end of 30:70 fiber coupler 5 is as coupling output output mode locking pulse, 70% end is used the optics glue bond as straight-through output and a block semiconductor saturable absorption speculum 4, the operation wavelength of semiconductor saturable absorption speculum 4 is 1550nm, trap is 37%, relaxation time is 2ps, semiconductor saturable absorption speculum 4 produces non-linear absorption, causes locked mode; The signal incident end of 976nm/1550nm wavelength division multiplexer 2 is connected with annular non-linear reflector 6 incident ends, annular non-linear reflector 6 is fused into by the fiber coupler of the 25:75 splitting ratio of operation wavelength 1550nm, and the residue end of annular non-linear reflector 6 also can be used as output output mode locking pulse; Increase the chamber at the SMF-28 optical fiber 7 of the loop part welding 200m of annular non-linear reflector 6 long, obtain the fiber pulse laser lower than the 1MHz repetition rate.
Embodiment 3:
As shown in Figure 3, the present embodiment provides the full-optical-fiber laser of the ultralow threshold value locked mode self-starting of a kind of Tm of mixing, but the gain fibre of this structure is not limited to mix Tm optical fiber, also can use doped fiber or the Raman gain optical fiber of other rare earth ions.
In the present embodiment, laser comprise pumping source 1, the 790nm/1950nm of 790nm wavelength division multiplexer 2, mix Tm single mode gain fibre 3, semiconductor saturable absorption speculum 4, the fiber coupler 5 of 30:70, annular non-linear reflector 6, SMF-28 monomode fiber 7.
Described wavelength division multiplexer 2 is arranged between annular non-linear reflector 6 and gain fibre 3, described fiber coupler 5 is arranged between gain fibre 3 and semiconductor saturable absorption speculum 4, the signal incident end of wavelength division multiplexer 2 is connected with annular non-linear reflector 6 incident ends, the multiplexing end of wavelength division multiplexer 2 is connected with gain fibre 3 one ends, gain fibre 3 other ends are connected with the straight-through output of fiber coupler 5, and the input of fiber coupler 5 is connected with semiconductor saturable absorption speculum 4.
The specific works process: the pumping source 1 that wavelength is 790nm connects the wavelength division multiplexer 2 pump light inputs of 790nm/1950nm, input pumping light; The multiplexing end of wavelength division multiplexer 2 is connected with single mode gain fibre 3 one ends of mixing Tm, pump light is injected in gain fibre 3 produces population inversion; Mixing Tm gain fibre 3 other ends is connected with 70% end of the fiber coupler 5 of the 30:70 splitting ratio of an operation wavelength 1950nm, the input of fiber coupler 5 and a block semiconductor saturable absorption speculum 4 are used the optics glue bond, the operation wavelength of semiconductor saturable absorption speculum 4 is 1950nm, trap is 36%, relaxation time is 10ps, semiconductor saturable absorption speculum 4 produces non-linear absorption, causes locked mode, 30% end output mode locking pulse of 30:70 fiber coupler 3; The signal incident end of 790nm/1950nm wavelength division multiplexer 2 is connected with annular non-linear reflector 6 incident ends, annular non-linear reflector 6 is fused into by the fiber coupler of the 25:75 splitting ratio of operation wavelength 1950nm, and the residue end of annular non-linear reflector 6 also can be used as output output mode locking pulse; Increase the chamber at the SMF-28 monomode fiber 7 of the loop part welding 200m of annular non-linear reflector 6 long, obtain the fiber pulse laser lower than the 1MHz repetition rate.
Embodiment 4:
As shown in Figure 4, the present embodiment provides the full-optical-fiber laser of the ultralow threshold value locked mode self-starting that a kind of Er, Yb mix altogether, but the gain fibre of this structure is not limited to Er, Yb co-doped fiber, also can use doped fiber or the Raman gain optical fiber of other rare earth ions.
In the present embodiment, laser comprises that pumping source 1, the wavelength division multiplexer 2 of 976nm/1550nm, Er, the Yb of 976nm mix single mode gain fibre 3, semiconductor saturable absorption speculum 4, the fiber coupler 5 of 30:70, annular non-linear reflector 6, SMF-28 monomode fiber 7 altogether.
Described wavelength division multiplexer 2 is arranged between semiconductor saturable absorption speculum 4 and gain fibre 3, described fiber coupler 5 is arranged between gain fibre 3 and annular non-linear reflector 6, the signal incident end of wavelength division multiplexer 2 is connected with semiconductor saturable absorption speculum 4, the multiplexing end of wavelength division multiplexer 2 is connected with gain fibre 3 one ends, gain fibre 3 other ends are connected with the straight-through output of fiber coupler 5, and the input of fiber coupler 5 is connected with annular non-linear reflector 6 incident ends.
The specific works process: the pumping source 1 that wavelength is 976nm connects the wavelength division multiplexer 2 of 976nm/1550nm, inputs as pump light; The multiplexing end of wavelength division multiplexer 2 is mixed altogether single mode gain fibre 3 one ends with Er, Yb and is connected, and pump light is injected in gain fibre 3 produces population inversion; Er, Yb mix altogether single mode gain fibre 3 other ends and are connected with 70% end of the 30:70 splitting ratio fiber coupler 5 of an operation wavelength 1550nm, 30% end output mode locking pulse of fiber coupler 5, the input of fiber coupler 5 is connected with annular non-linear reflector 6 incident ends, annular non-linear reflector 6 is fused into by the fiber coupler of the 25:75 splitting ratio of operation wavelength 1550nm, and the residue end of annular non-linear reflector 6 also can be used as output output mode locking pulse; Increase the chamber at the SMF-28 monomode fiber 7 of the loop part welding 200m of annular non-linear reflector 6 long, obtain the fiber pulse laser lower than the 1MHz repetition rate; The signal incident end of 976nm/1550nm wavelength division multiplexer 2 and SESAM absorbing mirror 4 an optics glue bond, the operation wavelength of semiconductor saturable absorption speculum 4 is 1550nm, trap is 37%, relaxation time is 2ps, semiconductor saturable absorption speculum 4 produces non-linear absorption, starts locked mode.
Embodiment 5:
As shown in Figure 5, the present embodiment provides a kind of full-optical-fiber laser of ultralow threshold value locked mode self-starting of Raman gain, but the gain fibre of this structure is not limited to Raman gain optical fiber, also can use the doped fiber of rare earth ion.
In the present embodiment, laser comprises pumping source 1,1342nm/1426nm wavelength division multiplexer 2, Raman gain optical fiber 3, semiconductor saturable absorption speculum 4, the fiber coupler 5 of 30:70, annular non-linear reflector 6, the SMF-28 monomode fiber 7 of 1342nm.
Described fiber coupler 5, wavelength division multiplexer 2 all are arranged between semiconductor saturable absorption speculum 4 and gain fibre 3, the input of fiber coupler 5 is connected with semiconductor saturable absorption speculum 4, the straight-through output of fiber coupler 5 is connected with the signal input part of wavelength division multiplexer 2, and the multiplexing end of wavelength division multiplexer 2 is connected with gain fibre 3.
The specific works process: the pumping source 1 that wavelength is 1342nm connects the wavelength division multiplexer 2 of 1342nm/1426nm, inputs as pump light; The multiplexing end of wavelength division multiplexer 2 is connected with Raman gain optical fiber 3 one ends, pump light is injected in Raman gain optical fiber 3 produces population inversion; Raman gain optical fiber 3 other ends are connected with annular non-linear reflector 6 incident ends, annular non-linear reflector 6 is fused into by the fiber coupler of the 25:75 splitting ratio of operation wavelength 1426nm, and the residue end of annular non-linear reflector 6 also can be used as output output mode locking pulse; Increase the chamber at the loop part welding 200mSMF-28 of annular non-linear reflector 6 monomode fiber 7 long, obtain the fiber pulse laser lower than the 1MHz repetition rate; The signal incident end of 1342nm/1426nm wavelength division multiplexer 2 is connected with 70% end of the fiber coupler 5 of the 30:70 splitting ratio of an operation wavelength 1426nm, 30% end output mode locking pulse, the input of fiber coupler and a block semiconductor saturable absorption speculum 4 are used the optics glue bond, the operation wavelength of semiconductor saturable absorption speculum 4 is 1420nm, trap is 4%, relaxation time is 10ps, and semiconductor saturable absorption speculum 4 produces non-linear absorption, starts locked mode.
As mentioned above; what the present invention protected is a kind of full-optical-fiber laser of ultralow threshold value self-starting locked mode; its by in a laser cavity in conjunction with the mode of semiconductor saturable absorption speculum and two kinds of pulses that narrow of annular non-linear reflector; make laser have both advantages concurrently; can either realize self-starting; can obtain stable mode locking pulse again, also have very low pumping threshold, can extend the useful life of semiconductor saturable absorption speculum.The laser of this structure also has pulse duration can regulate, can realize the advantages such as low-repetition-frequency output, output Gaussian spectrum, and pass through semiconductor saturable absorbing mirror and fibre-optic package, can realize the mode-locked laser of full optical fiber, the output pulse further can obtain the femtosecond magnitude after compression, can amplify as the seed source of performance high-quality.All and the same or analogous technical scheme of this case structure all should be shown in the protection range that falls into this case.
Claims (9)
1. the full-optical-fiber laser of a ultralow threshold value self-starting locked mode, it is characterized in that: include the pumping source (1) for generation of pump light, gain fibre (3) for generation of the required population inversion of laser gain, be used for non-linear absorption, induce the semiconductor saturable absorption speculum (4) of locked mode self-starting, and be used for nonlinear reflection to clamp down on the annular non-linear reflector (6) of locked mode pulse peak power in laser cavity, described annular non-linear reflector (6) incident end is connected to form laserresonator by gain fibre (3) and semiconductor saturable absorption speculum (4), be provided with on laserresonator for the pump light with pumping source (1) and inject the wavelength division multiplexer (2) of laserresonator and be used for the fiber coupler (5) that mode locking pulse is exported in coupling, described wavelength division multiplexer (2) is provided with a pump light input, one signal incident end and a multiplexing end, the pump light input of described wavelength division multiplexer (2) is connected with pumping source (1) output, the signal incident end of wavelength division multiplexer (2), multiplexing end is connected in laserresonator, described fiber coupler (5) is provided with an input, one straight-through output and a coupling output, the input of fiber coupler (5), straight-through output is connected in laserresonator, the coupling output of fiber coupler (5) is as the mode locking pulse output.
2. the full-optical-fiber laser of a kind of ultralow threshold value self-starting locked mode according to claim 1, it is characterized in that described wavelength division multiplexer (2), fiber coupler (5) all are arranged between annular non-linear reflector (6) and gain fibre (3), fiber coupler (5) input is connected with annular non-linear reflector (6) incident end, the straight-through output of fiber coupler (5) is connected with the signal incident end of wavelength division multiplexer (2), and the multiplexing end of wavelength division multiplexer (2) is connected with gain fibre (3).
3. the full-optical-fiber laser of a kind of ultralow threshold value self-starting locked mode according to claim 1, it is characterized in that described wavelength division multiplexer (2) is arranged between annular non-linear reflector (6) and gain fibre (3), described fiber coupler (5) is arranged between gain fibre (3) and semiconductor saturable absorption speculum (4), the signal incident end of wavelength division multiplexer (2) is connected with annular non-linear reflector (6) incident end, the multiplexing end of wavelength division multiplexer (2) is connected with gain fibre (3) one ends, gain fibre (3) other end is connected with the input of fiber coupler (5), the straight-through output of fiber coupler (5) is connected with semiconductor saturable absorption speculum (4).
4. the full-optical-fiber laser of a kind of ultralow threshold value self-starting locked mode according to claim 1, it is characterized in that described wavelength division multiplexer (2) is arranged between annular non-linear reflector (6) and gain fibre (3), described fiber coupler (5) is arranged between gain fibre (3) and semiconductor saturable absorption speculum (4), the signal incident end of wavelength division multiplexer (2) is connected with annular non-linear reflector (6) incident end, the multiplexing end of wavelength division multiplexer (2) is connected with gain fibre (3) one ends, gain fibre (3) other end is connected with the straight-through output of fiber coupler (5), the input of fiber coupler (5) is connected with semiconductor saturable absorption speculum (4).
5. the full-optical-fiber laser of a kind of ultralow threshold value self-starting locked mode according to claim 1, it is characterized in that described wavelength division multiplexer (2) is arranged between semiconductor saturable absorption speculum (4) and gain fibre (3), described fiber coupler (5) is arranged between gain fibre (3) and annular non-linear reflector (6), the signal incident end of wavelength division multiplexer (2) is connected with semiconductor saturable absorption speculum (4), the multiplexing end of wavelength division multiplexer (2) is connected with gain fibre (3) one ends, gain fibre (3) other end is connected with the straight-through output of fiber coupler (5), the input of fiber coupler (5) is connected with annular non-linear reflector (6) incident end.
6. the full-optical-fiber laser of a kind of ultralow threshold value self-starting locked mode according to claim 1, it is characterized in that described fiber coupler (5), wavelength division multiplexer (2) all are arranged between semiconductor saturable absorption speculum (4) and gain fibre (3), the input of fiber coupler (5) is connected with semiconductor saturable absorption speculum (4), the straight-through output of fiber coupler (5) is connected with the signal input part of wavelength division multiplexer (2), and the multiplexing end of wavelength division multiplexer (2) is connected with gain fibre (3).
7. the full-optical-fiber laser of the described a kind of ultralow threshold value self-starting locked mode of according to claim 1-6 any one, it is characterized in that described annular non-linear reflector (6) for connecting and composing by two outputs with the fiber coupler of 2 * 2, annular non-linear reflector (6) is provided with a residue end that can be used for exporting mode locking pulse.
8. the full-optical-fiber laser of a kind of ultralow threshold value self-starting locked mode according to claim 7, is characterized in that partly being provided with for increasing the monomode fiber (7) of chamber length with the repetition rate of adjusting laser at the loop of described annular non-linear reflector (6).
9. the full-optical-fiber laser of the described a kind of ultralow threshold value self-starting locked mode of according to claim 1-6 any one, is characterized in that described gain fibre (3) is doped rare earth element ion single mode gain fibre or Raman gain optical fiber.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649418A (en) * | 2018-06-22 | 2018-10-12 | 天津欧泰激光科技有限公司 | Can self-starting Spectral Broadening and offset filtering mode-locked laser |
| CN109581780A (en) * | 2019-01-24 | 2019-04-05 | 广东朗研科技有限公司 | A kind of long ring non-linear reflector that frequency spectrum is cut out and its application |
| CN109787081A (en) * | 2019-01-23 | 2019-05-21 | 广东朗研科技有限公司 | Mid-infrared ultra-short pulse laser light source |
| CN111711061A (en) * | 2020-06-29 | 2020-09-25 | 华南理工大学 | Dual-wavelength all-fiber laser |
| CN111711056A (en) * | 2020-06-22 | 2020-09-25 | 北京交通大学 | Tunable laser based on double-core optical fiber and Sagnac ring double interference |
| CN112909716A (en) * | 2021-01-20 | 2021-06-04 | 华中科技大学 | Full polarization-maintaining femtosecond fiber laser based on hybrid modulation mode locking |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002031824A (en) * | 2000-07-17 | 2002-01-31 | Nec Corp | Optical noise suppressing element |
| CN101771232A (en) * | 2008-12-31 | 2010-07-07 | 中国科学院西安光学精密机械研究所 | Sigma cavity ultrashort pulse fiber laser with variable output rate |
| CN201656239U (en) * | 2010-04-29 | 2010-11-24 | 中国科学院上海光学精密机械研究所 | All fiber ytterbium-doped ultrashort pulse laser |
| CN203056360U (en) * | 2013-02-23 | 2013-07-10 | 广东汉唐量子光电科技有限公司 | Self-startup mode locking all-fiber laser apparatus with ultra low threshold |
-
2013
- 2013-02-23 CN CN201310057034XA patent/CN103138146A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002031824A (en) * | 2000-07-17 | 2002-01-31 | Nec Corp | Optical noise suppressing element |
| CN101771232A (en) * | 2008-12-31 | 2010-07-07 | 中国科学院西安光学精密机械研究所 | Sigma cavity ultrashort pulse fiber laser with variable output rate |
| CN201656239U (en) * | 2010-04-29 | 2010-11-24 | 中国科学院上海光学精密机械研究所 | All fiber ytterbium-doped ultrashort pulse laser |
| CN203056360U (en) * | 2013-02-23 | 2013-07-10 | 广东汉唐量子光电科技有限公司 | Self-startup mode locking all-fiber laser apparatus with ultra low threshold |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649418A (en) * | 2018-06-22 | 2018-10-12 | 天津欧泰激光科技有限公司 | Can self-starting Spectral Broadening and offset filtering mode-locked laser |
| CN108649418B (en) * | 2018-06-22 | 2024-02-02 | 天津欧泰激光科技有限公司 | Self-starting nonlinear spectrum broadening and offset filtering mode-locked laser |
| CN109787081A (en) * | 2019-01-23 | 2019-05-21 | 广东朗研科技有限公司 | Mid-infrared ultra-short pulse laser light source |
| CN109581780A (en) * | 2019-01-24 | 2019-04-05 | 广东朗研科技有限公司 | A kind of long ring non-linear reflector that frequency spectrum is cut out and its application |
| CN109581780B (en) * | 2019-01-24 | 2022-01-04 | 广东朗研科技有限公司 | Long-ring nonlinear reflector for frequency spectrum clipping and application thereof |
| CN111711056A (en) * | 2020-06-22 | 2020-09-25 | 北京交通大学 | Tunable laser based on double-core optical fiber and Sagnac ring double interference |
| CN111711061A (en) * | 2020-06-29 | 2020-09-25 | 华南理工大学 | Dual-wavelength all-fiber laser |
| CN112909716A (en) * | 2021-01-20 | 2021-06-04 | 华中科技大学 | Full polarization-maintaining femtosecond fiber laser based on hybrid modulation mode locking |
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