CN105428976A - Mode-locked fiber laser and pulse laser generation method - Google Patents
Mode-locked fiber laser and pulse laser generation method Download PDFInfo
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- CN105428976A CN105428976A CN201610015734.6A CN201610015734A CN105428976A CN 105428976 A CN105428976 A CN 105428976A CN 201610015734 A CN201610015734 A CN 201610015734A CN 105428976 A CN105428976 A CN 105428976A
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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
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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
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
- H01S3/1106—Mode locking
Abstract
The invention provides a mode-locked fiber laser and a pulse laser generation method, and belongs to the field of a fiber laser. The mode-locked fiber laser comprises a pumped source and a mode-locked laser resonator, and the mode-locked laser resonator comprises a reflection part, a gain fiber, a polarization-maintaining filter and a saturable absorption mirror which are successively coupled, wherein the saturable absorption mirror is used for mode locking. Pump light emitted by the pumped source penetrates into the gain fiber to generate signal light, the signal light penetrates into the saturable absorption mirror after being processed into signal light in a preset polarization direction and within a preset wavelength scope by the polarization-maintaining filter and returns to the polarization-maintaining filter after mode locking of the saturable absorption mirror, the signal light returning to the polarization-maintaining filter re-penetrates into the gain fiber and is input to the reflection part after being amplified by the gain fiber, and the portion, which meets the transmission condition of the reflection part, in the signal light amplified by the gain fiber is output. Compared to a conventional mode-locked fiber laser, the mode-locked fiber laser provided by the invention is simple in structure and high in stability and reliability, thereby facilitating engineering application.
Description
Technical field
The present invention relates to fiber laser field, in particular to a kind of mode locked fiber laser and pulse laser production method.
Background technology
Mode locked fiber laser, as the front end seed source of ultra-short pulse laser system, is the key of ultra-short pulse laser system, and its key property index and stability indicator directly affect the reliability of system.Wherein, the non-maintaining function of the self-starting of mode locked fiber laser is that it realizes industrialized inevitable requirement.Self-starting refers to that mode-locked laser can realize start and namely start, and exports mode locking pulse.Non-maintaining refer to mode-locked laser can realize under various complex environment mode locking pulse export, as adverse circumstances such as high temperature, low temperature, vibration, high humiditys.Current mode locked fiber laser generally adopts thermostatic control (namely utilize thermostatic control, resist the pulse losing lock that Yin Wendu causes), Electronic control and cure package etc. to realize the non-maintaining function of mode locked fiber laser.But, though these class methods can realize the through engineering approaches application of mode locked fiber laser, but complex structure, non-maintaining poor reliability.Therefore, mode locked fiber laser, as a kind of important ultra-short pulse laser output device, needs to start with from the design of mode locked fiber laser structure, improves the reliability of the non-maintaining function of mode locked fiber laser.
Summary of the invention
The object of the present invention is to provide a kind of mode locked fiber laser and pulse laser production method, by the design to mode locked fiber laser self structure, effectively ensure the reliability of the non-maintaining function of mode locked fiber laser, to improve above-mentioned problem.
To achieve these goals, the technical scheme of embodiment of the present invention employing is as follows:
First aspect, a kind of mode locked fiber laser that the embodiment of the present invention provides, for exporting pulse laser, comprise: pumping source and mode-locked laser resonant cavity, described mode-locked laser resonant cavity comprises the reflection part, gain fibre, the inclined filter of guarantor and the saturable absorbing mirror for locked mode that are coupled successively;
The pump light that described pumping source sends enters described gain fibre and generates flashlight;
Described flashlight enters described saturable absorbing mirror after the inclined filter process of described guarantor is the flashlight of default polarization direction and preset wavelength scope;
The flashlight of described default polarization direction and preset wavelength scope returns the inclined filter of described guarantor after described saturable absorbing mirror locked mode;
The flashlight returning the inclined filter of described guarantor enters described gain fibre again, after described gain fibre amplifies, input to described reflection part;
The part meeting described reflection part Transmission Conditions in flashlight after described gain fibre amplifies exports.
In conjunction with first aspect, the embodiment of the present invention additionally provides the first possibility execution mode of first aspect, wherein, the inclined filter of described guarantor comprises the polarizer, bandpass filter and housing, the described polarizer and described bandpass filter are all positioned at described housing, the centre wavelength of described bandpass filter is consistent with the centre wavelength of described pulse laser, the described polarizer is used for entering the flashlight protecting inclined filter and be adjusted to the flashlight of default polarization direction, described bandpass filter is used for the flashlight flashlight entering the inclined filter of described guarantor being adjusted to preset wavelength scope.
In conjunction with the first possibility execution mode of first aspect, the embodiment of the present invention additionally provides the second possibility execution mode of first aspect, wherein, the inclined filter of described guarantor also comprises the first collimating lens and the second collimating lens, described first collimating lens and described second collimating lens are all positioned at described housing, the described polarizer and described bandpass filter are between described first collimating lens and described second collimating lens, described first collimating lens, described bandpass filter, the optical axis coincidence of the described polarizer and described second collimating lens, described first collimating lens is coupled with described gain fibre by the first optical fiber, described second collimating lens is coupled with described saturable absorbing mirror by the second optical fiber.
In conjunction with first aspect or first aspect the first may the second of execution mode or first aspect may execution mode, the embodiment of the present invention additionally provides the third possibility execution mode of first aspect, wherein, described mode locked fiber laser also comprises wavelength division multiplexer, described wavelength division multiplexer is arranged on outside described mode-locked laser resonant cavity, described wavelength division multiplexer comprises the first signal end and closes Shu Duan, reflection part described in described conjunction Shu Duanyu is by the 3rd coupling fiber, described first signal end is coupled with described pumping source, described pump light enters described first signal end, described reflection part is exported to from described conjunction Shu Duan, from described reflection part through entering described gain fibre.
In conjunction with the third possibility execution mode of first aspect, the embodiment of the present invention additionally provides the 4th kind of possibility execution mode of first aspect, wherein, described mode locked fiber laser also comprises optical isolator, described wavelength division multiplexer also comprises secondary signal end, and described optical isolator is coupled with described secondary signal end.
In conjunction with the 4th kind of possibility execution mode of first aspect, the embodiment of the present invention additionally provides the 5th kind of possibility execution mode of first aspect, wherein, by the 4th coupling fiber between described reflection part and described gain fibre, described 3rd optical fiber and described 4th optical fiber are polarization maintaining optical fibre.
In conjunction with first aspect or first aspect the first may the second of execution mode or first aspect may execution mode, the embodiment of the present invention additionally provides the 6th kind of possibility execution mode of first aspect, wherein, described mode locked fiber laser also comprises wavelength division multiplexer, described wavelength division multiplexer is arranged in described mode-locked laser resonant cavity, described optical coupler comprises the first signal end, secondary signal end and conjunction Shu Duan, gain fibre coupling described in described conjunction Shu Duanyu, described first signal end is coupled with described pumping source, described secondary signal end is coupled with described reflection part.
In conjunction with first aspect, the embodiment of the present invention additionally provides the 7th kind of possibility execution mode of first aspect, wherein, described saturable absorbing mirror is any one in semiconductor saturable absorbing mirror, carbon nano-tube saturable absorbing mirror, Graphene saturable absorbing mirror or graphene oxide saturable absorbing mirror.
In conjunction with first aspect, the embodiment of the present invention additionally provides the 8th kind of possibility execution mode of first aspect, and wherein, described reflection part is fiber grating, the centre wavelength of described fiber grating and the consistent wavelength of described pulse laser.
Second aspect, a kind of pulse laser production method, be applied to above-mentioned Mode-locked laser device, described method comprises:
The pump light that gain fibre sends according to pumping source generates flashlight, and flashlight is exported to the inclined filter of guarantor;
The described flashlight received is treated to the flashlight of default polarization direction and preset wavelength scope and exports saturable absorbing mirror to by the inclined filter of described guarantor;
The inclined filter of described guarantor is transferred to again after the flashlight of described saturable absorbing mirror to described default polarization direction and preset wavelength scope carries out locked mode;
The flashlight that inclined for described guarantor filter exports amplifies and transfers to reflection part by described gain fibre;
Described reflection part will meet the part signal light output of the Transmission Conditions of described reflection part.
Mode locked fiber laser provided by the invention devises protects inclined filter, for the ACTIVE CONTROL of mode locking pulse polarization state, by protecting inclined filter, mode locking pulse polarization state is fixed, the factors such as temperature, vibration, stress of effectively having resisted, on the impact of this mode locked fiber laser, ensure that this mode locked fiber laser has reliable non-maintaining function.The present invention is compared to traditional mode locked fiber laser, and structure is simple, reliable and stable, is convenient to engineer applied.Further, the present invention adopts saturable absorbing mirror as mode-locking device, makes this mode locked fiber laser have self-starting function simultaneously.
Other features and advantages of the present invention are set forth at specification subsequently, and, partly become apparent from specification, or understand by implementing the embodiment of the present invention.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.Shown in accompanying drawing, above-mentioned and other object of the present invention, Characteristics and advantages will be more clear.Reference numeral identical in whole accompanying drawing indicates identical part.Deliberately do not draw accompanying drawing by actual size equal proportion convergent-divergent, focus on purport of the present invention is shown.
Fig. 1 shows the structural representation of a kind of mode locked fiber laser that first embodiment of the invention provides;
Fig. 2 shows the structural representation of the inclined filter of guarantor of a kind of mode locked fiber laser that first embodiment of the invention provides;
Fig. 3 shows the structural representation of the another kind of mode locked fiber laser that first embodiment of the invention provides;
Fig. 4 shows the method flow diagram of a kind of pulse laser production method that second embodiment of the invention provides.
Wherein, Reference numeral is respectively:
Pumping source 100; Wavelength division multiplexer 200; Mode-locked laser resonant cavity 300; Reflection part 310; Gain fibre 320; Protect inclined filter 330; Housing 331; First collimating lens 332; Bandpass filter 333; The polarizer 334; Second collimating lens 335; Saturable absorbing mirror 340; Optical isolator 400.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, carry out clear, complete description to the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
First embodiment
Embodiments providing a kind of mode locked fiber laser, for exporting pulse laser, comprising: pumping source 100 and mode-locked laser resonant cavity 300.As shown in Figure 1, mode-locked laser resonant cavity 300 comprise again be coupled successively reflection part 310, gain fibre 320, protect inclined filter 330 and the saturable absorbing mirror 340 for locked mode.
Flashlight multiple oscillation in mode-locked laser resonant cavity 300 that reflection part 310 and saturable absorbing mirror 340 produce for making gain fibre 320, to export Mode-locked laser.Wherein, reflection part 310 is mainly used in Mode-locked laser and exports, a part of Mode-locked laser is exported, another part is reflected back in mode-locked laser resonant cavity 300 and continues vibration, such as, can adopt fiber grating or laser output mirror, described laser output mirror is can the speculum of permeation parts laser; Saturable absorbing mirror 340 is mainly used in locking laser longitudinal module, to obtain pulse laser, such as, can be the mode-locking device that semiconductor saturable absorbing mirror, Graphene saturable absorbing mirror etc. have saturable absorption effect.Laser polarization state controls, mode locking pulse centre wavelength is selected and the filtering of remnant pump light for realizing to protect inclined filter 330.Mode locking pulse for generation of flashlight, and amplifies, to export Mode-locked laser by gain fibre 320.Pumping source 100 is for providing pump light.
The course of work that described mode locked fiber laser exports pulse laser is: the pump light that pumping source 100 sends enters gain fibre 320, gain fibre 320 is made to generate flashlight, it should be noted that, described flashlight refers to gain fibre 320 under the excitation of pump light, the light for exporting pulse laser that spontaneous radiation produces.The flashlight that gain fibre 320 generates enters described saturable absorbing mirror 340 after the inclined filter of described guarantor 330 is treated to the flashlight of default polarization direction and preset wavelength scope, the flashlight of described default polarization direction and preset wavelength scope returns the inclined filter 330 of described guarantor after described saturable absorbing mirror 340 locked mode, the flashlight returning the inclined filter of described guarantor 330 is after the Polarization Control of protecting inclined filter 330 and filtering process, again enter described gain fibre 320, described reflection part 310 is inputed to after described gain fibre 320 amplifies, the part meeting described reflection part 310 Transmission Conditions in flashlight after described gain fibre 320 amplifies exports, and the part signal light not meeting Transmission Conditions is reflected back toward mode-locked laser resonant cavity relaying persistent oscillation.Described Transmission Conditions is the transmitance of reflection part 310, such as, the transmitance of reflection part 310 is 10%, then in the flashlight after described gain fibre 320 amplifies, the light energy of 10% exports, and the light energy of 90% is reflected back toward mode-locked laser resonant cavity relaying persistent oscillation.Said process is that flashlight completes the process of once vibrating in mode-locked laser resonant cavity 300, after multiple oscillation, gets final product the pulse laser of stable output.
Wherein, the flashlight that gain fibre 320 generates enters described saturable absorbing mirror 340 and is specially after the inclined filter of described guarantor 330 is treated to the flashlight of default polarization direction and preset wavelength scope: only have the satisfied part signal light presetting polarization direction and preset wavelength scope can enter saturable absorbing mirror 340 by protecting inclined filter 330, other part signal light not meeting default polarization direction and preset wavelength scope is then by filtering.Concrete, according to the needs of user, the light transmission condition protecting inclined filter 330 can be designed to default polarization direction and preset wavelength scope.
In the present embodiment, gain fibre 320 can be the optical fiber doped with rare earth ion, described gain fibre 320, can be Yb dosed optical fiber, Er-doped fiber, thulium doped fiber etc., population inversion is there is in these gain fibres 320 under the excitation of pump light, and then spontaneous radiation produces flashlight, such as, when gain fibre 320 adopts Er-doped fiber, the ultrashort laser pulse that can be realized 1560nm wave band by the pump light of 975nm is exported.
Mode locking pulse polarization state is fixed by protecting inclined filter 330 by the mode locked fiber laser that the present embodiment provides, export to realize linear polarization Mode-locked laser, effectively can resist the factors such as temperature, vibration, stress to the impact of mode locked fiber laser by protecting inclined filter 330, making this mode locked fiber laser have reliable non-maintaining function.Therefore, the present invention is compared to traditional mode locked fiber laser, and structure is simple, reliable and stable, is convenient to engineer applied.Further, the present invention adopts saturable absorbing mirror as mode-locking device, makes this mode locked fiber laser have self-starting function simultaneously.
In the present embodiment, reflection part 310 preferably adopts fiber grating, and the reflectivity of described fiber grating can need design according to user.The flashlight transferring to fiber grating can be reflected back toward in mode-locked laser resonant cavity 300 according to a reflectivity condition part for fiber grating and continue vibration, and another part exports.The centre wavelength of this fiber grating and mode locked fiber laser need the consistent wavelength of the pulse laser exported.Pumping source 100 can adopt laser diode, certainly, other also can be adopted to may be used for exciting the light source of gain fibre 320.Described saturable absorbing mirror 340 is made up of saturable absorber and speculum, due to the laser amplitude modulating characteristic of saturable absorber, achieve the longitudinal mode PGC demodulation of the laser of vibration in mode-locked laser resonant cavity 300, export pulse laser to make this mode locked fiber laser.Wherein, described saturable absorber can semiconductor saturable absorber, single armed carbon nano-tube, Graphene or graphene oxide.
Further, in the present embodiment, protect inclined filter 330 and can comprise the polarizer 334, bandpass filter 333 and housing 331, the polarizer 334 and bandpass filter 333 are all positioned at housing 331.Wherein, the polarizer 334 will be for entering the flashlight protecting inclined filter 330 and be adjusted to the flashlight of default polarization direction; Bandpass filter 333 is for being adjusted to the flashlight of preset wavelength scope by the flashlight entering the inclined filter 330 of described guarantor, the low-loss transmission region scope of bandpass filter 333 is preset wavelength scope, and the centre wavelength of bandpass filter 333 and this mode locked fiber laser need the consistent wavelength of the pulse laser exported.Certainly, due in mode-locked laser resonant cavity 300, no matter be export from gain fibre 320 light protecting inclined filter 330 to, or reflexing to by saturable absorbing mirror 340 light protecting inclined filter 330 all exists the angle of divergence, therefore in order to improve the effective rate of utilization of flashlight, protect in inclined filter 330 and also comprise the first collimating lens 332 and the second collimating lens 335, first collimating lens 332 and the second collimating lens 335 and be all positioned at housing 331.The polarizer 334 and bandpass filter 333 are between the first collimating lens 332 and the second collimating lens 335, and as shown in Figure 2, the optical axis of the first collimating lens 332, second collimating lens 335, the polarizer 334 and bandpass filter 333 is on same straight line.Now, the first collimating lens 332 is coupled with gain fibre 320 by the first optical fiber, and gain fibre 320 is coupled with reflection part 310 by the 4th optical fiber, and the second collimating lens 335 is coupled with saturable absorbing mirror 340 by the second optical fiber.
Concrete, because gain fibre 320 exports the light protecting inclined filter 330 to except the flashlight having compared with wide spectral that gain fibre 320 produces under pump light excitation, also comprise the pump light of remnants.That is, it is inner that the light exported in gain fibre 320 enters by the first optical fiber the housing 331 protecting inclined filter 330, parallelly bandpass filter 333 is incident to after the first collimating lens 332 collimates, bandpass filter 333 pairs of remnant pump light carry out filtering and after carrying out centre wavelength selection to flashlight, flashlight through bandpass filter 333 is incident to the polarizer 334, preset the linear polarization light of polarization direction by the polarizer 334, other polarization state is cut off.Such as, the polarizer 334 can adopt fast axle to end the polarizer.Flashlight through the polarizer 334 is parallel is incident to the second collimating lens 335, passes through the second Optical Fiber Transmission again to saturable absorbing mirror 340 after the second collimating lens 335 focuses on.Now, the light entering saturable absorbing mirror 340 is default polarization direction and the flashlight of preset wavelength scope.
Certainly, the mode locked fiber laser that the present embodiment provides also comprises wavelength division multiplexer 200, and wavelength division multiplexer 200 forms coupling pump light system together with pumping source 100.As shown in Figure 1, described wavelength division multiplexer 200 is arranged on outside mode-locked laser resonant cavity 300, described wavelength division multiplexer 200 comprises the first signal end, secondary signal end and closes Shu Duan, and described conjunction Shu Duanyu reflection part 310 is by the 3rd coupling fiber, and described first signal end is coupled with pumping source 100.The pump light that pumping source 100 sends enters from described first signal end of wavelength division multiplexer 200, exports reflection part 310 to from described conjunction Shu Duan, from reflection part 310 through entering described gain fibre 320.It should be noted that, the secondary signal end of wavelength division multiplexer 200 is for exporting pulse laser.
In addition, this mode locked fiber laser also comprises optical isolator 400, and described optical isolator 400 is coupled with the secondary signal end of wavelength division multiplexer 200.Due to the direction limited characteristic of optical isolator 400, efficiently avoid and meet reflection part 310 and export rear section through the pulse laser of condition through described secondary signal end and be reflected back mode-locked laser resonant cavity 300 by fiber end face, effectively improve the efficiency of transmission of pulse laser, and then improve the power output of mode locked fiber laser.
In order to the polarization direction of the flashlight ensureing vibration in mode-locked laser resonant cavity 300 is further fixed, realize linear polarization Mode-locked laser to export, reflection part 310, gain fibre 320, protect inclined filter 330, saturable absorbing mirror 340 is coupled by polarization maintaining optical fibre successively, the first namely above-mentioned optical fiber, the second optical fiber, the 3rd optical fiber and the 4th optical fiber are polarization maintaining optical fibre.In addition, gain fibre 320 also adopts polarization maintaining optical fibre.It should be noted that, the optical fiber dispersion value of optical fiber also affects the pulse duration that mode locked fiber laser exports pulse laser, therefore, adopts the optical fiber with different fiber dispersion values that this mode locked fiber laser can be made to export the pulse laser of different pulse duration.
In addition, as shown in Figure 3, the present embodiment additionally provides the execution mode of another kind of mode locked fiber laser, is arranged in described mode-locked laser resonant cavity 300 by wavelength division multiplexer 200.Now, the conjunction Shu Duanyu gain fibre 320 of wavelength division multiplexer 200 is coupled, and the first signal end is coupled with pumping source 100, and secondary signal end is coupled with reflection part 310, and optical isolator 400 is coupled with reflection part 310.Pump light is coupled by wavelength division multiplexer 200 and directly enters gain fibre 320, and gain fibre 320 receives pump light excitation and generates flashlight and transfer to the inclined filter 330 of guarantor.Enter the flashlight of protecting inclined filter 330 through protecting inclined filter 330 and be treated to default polarization direction and after the flashlight of preset wavelength scope, transfer to saturable absorbing mirror 340, multiple oscillation in mode-locked laser resonant cavity 300 is returned after saturable absorbing mirror 340 locked mode, in oscillatory process, the pulse laser part transferring to reflection part 310 is transmitted through the rear output of optical isolator 400, and another part reflection returns mode-locked laser resonant cavity 300 and continues vibration.Concrete, the transmitted output portion of pulse laser is determined by the reflectivity of reflection part 310 with the ratio of reflection returning part.
Second embodiment
As shown in Figure 4, embodiments provide a kind of pulse laser production method, be applied to the mode locked fiber laser that above-mentioned first embodiment provides, described method comprises:
Step S401: the pump light that gain fibre sends according to pumping source generates flashlight, and flashlight is exported to the inclined filter of guarantor;
Step S402: the described flashlight received is treated to the flashlight of default polarization direction and preset wavelength scope and exports saturable absorbing mirror to by the inclined filter of described guarantor;
Step S403: transfer to the inclined filter of described guarantor again after the flashlight of described saturable absorbing mirror to described default polarization direction and preset wavelength scope carries out locked mode;
Step S404: the flashlight that inclined for described guarantor filter exports amplifies and transfers to reflection part by described gain fibre;
Step S405: described reflection part will meet the part signal light output of the Transmission Conditions of described reflection part.
Those skilled in the art can be well understood to, and for convenience and simplicity of description, the specific works process of the method for foregoing description, with reference to the corresponding process in aforementioned first embodiment, can not repeat them here.
It should be noted that, embodiment of the method shown in Fig. 4 is only enter in mode-locked laser resonant cavity for the pump light exported by pumping source, the flashlight that gain fibre sends under the excitation of pump light completes the process of once vibrating in mode-locked laser resonant cavity 300, and the flashlight that the part after step S405 does not meet Transmission Conditions can be reflected back mode-locked laser resonant cavity continuation vibration, through multiple oscillation, get final product the pulse laser of stable output.
It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, by statement " comprise one ... ... " key element that limits, and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing ", " coupling " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection range of claim.
Claims (10)
1. a mode locked fiber laser, for exporting pulse laser, it is characterized in that, comprising: pumping source and mode-locked laser resonant cavity, described mode-locked laser resonant cavity comprises the reflection part, gain fibre, the inclined filter of guarantor and the saturable absorbing mirror for locked mode that are coupled successively;
The pump light that described pumping source sends enters described gain fibre and generates flashlight;
Described flashlight enters described saturable absorbing mirror after the inclined filter process of described guarantor is the flashlight of default polarization direction and preset wavelength scope;
The flashlight of described default polarization direction and preset wavelength scope returns the inclined filter of described guarantor after described saturable absorbing mirror locked mode;
The flashlight returning the inclined filter of described guarantor enters described gain fibre again, after described gain fibre amplifies, input to described reflection part;
The part meeting described reflection part Transmission Conditions in flashlight after described gain fibre amplifies exports.
2. mode locked fiber laser according to claim 1, it is characterized in that, the inclined filter of described guarantor comprises the polarizer, bandpass filter and housing, the described polarizer and described bandpass filter are all positioned at described housing, the centre wavelength of described bandpass filter is consistent with the centre wavelength of described pulse laser, the described polarizer is used for entering the flashlight protecting inclined filter and be adjusted to the flashlight of default polarization direction, and described bandpass filter is for being adjusted to the flashlight of preset wavelength scope by the flashlight entering the inclined filter of described guarantor.
3. mode locked fiber laser according to claim 2, it is characterized in that, the inclined filter of described guarantor also comprises the first collimating lens and the second collimating lens, described first collimating lens and described second collimating lens are all positioned at described housing, the described polarizer and described bandpass filter are between described first collimating lens and described second collimating lens, described first collimating lens, described bandpass filter, the optical axis coincidence of the described polarizer and described second collimating lens, described first collimating lens is coupled with described gain fibre by the first optical fiber, described second collimating lens is coupled with described saturable absorbing mirror by the second optical fiber.
4. the mode locked fiber laser according to any one of claim 1-3, it is characterized in that, also comprise wavelength division multiplexer, described wavelength division multiplexer is arranged on outside described mode-locked laser resonant cavity, described wavelength division multiplexer comprises the first signal end and closes Shu Duan, reflection part described in described conjunction Shu Duanyu is by the 3rd coupling fiber, described first signal end is coupled with described pumping source, described pump light enters described first signal end, described reflection part is exported to, from described reflection part through entering described gain fibre from described conjunction Shu Duan.
5. mode locked fiber laser according to claim 4, is characterized in that, also comprises optical isolator, and described wavelength division multiplexer also comprises secondary signal end, and described optical isolator is coupled with described secondary signal end.
6. mode locked fiber laser according to claim 5, is characterized in that, by the 4th coupling fiber between described reflection part and described gain fibre, described 3rd optical fiber and described 4th optical fiber are polarization maintaining optical fibre.
7. the mode locked fiber laser according to any one of claim 1-3, it is characterized in that, also comprise wavelength division multiplexer, described wavelength division multiplexer is arranged in described mode-locked laser resonant cavity, described optical coupler comprises the first signal end, secondary signal end and closes Shu Duan, gain fibre coupling described in described conjunction Shu Duanyu, described first signal end is coupled with described pumping source, and described secondary signal end is coupled with described reflection part.
8. mode locked fiber laser according to claim 1, it is characterized in that, described saturable absorbing mirror is any one in semiconductor saturable absorbing mirror, carbon nano-tube saturable absorbing mirror, Graphene saturable absorbing mirror or graphene oxide saturable absorbing mirror.
9. mode locked fiber laser according to claim 1, is characterized in that, described reflection part is fiber grating, the centre wavelength of described fiber grating and the consistent wavelength of described pulse laser.
10. a pulse laser production method, be applied to locked mode optical laser as claimed in any one of claims 1-9 wherein, it is characterized in that, described method comprises:
The pump light that gain fibre sends according to pumping source generates flashlight, and flashlight is exported to the inclined filter of guarantor;
The described flashlight received is treated to the flashlight of default polarization direction and preset wavelength scope and exports saturable absorbing mirror to by the inclined filter of described guarantor;
The inclined filter of described guarantor is transferred to again after the flashlight of described saturable absorbing mirror to described default polarization direction and preset wavelength scope carries out locked mode;
The flashlight that inclined for described guarantor filter exports amplifies and transfers to reflection part by described gain fibre;
Described reflection part will meet the part signal light output of the Transmission Conditions of described reflection part.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846303A (en) * | 2016-06-08 | 2016-08-10 | 中国工程物理研究院激光聚变研究中心 | Mode-locking optical fiber device and mode-locking optical fiber laser device |
| CN105958307A (en) * | 2016-06-21 | 2016-09-21 | 上海理工大学 | Mode-locking device and optical fiber laser applying same |
| CN106129798A (en) * | 2016-08-26 | 2016-11-16 | 中国工程物理研究院激光聚变研究中心 | Mode locked fiber laser |
| CN107104352A (en) * | 2017-06-28 | 2017-08-29 | 中国工程物理研究院激光聚变研究中心 | Optical fiber laser and optical system |
| CN107425409A (en) * | 2017-06-28 | 2017-12-01 | 中国工程物理研究院激光聚变研究中心 | Mode-locked laser and optical system |
| CN108565671A (en) * | 2018-03-26 | 2018-09-21 | 中国工程物理研究院激光聚变研究中心 | A kind of mode locked fiber laser |
| CN110098557A (en) * | 2019-05-06 | 2019-08-06 | 武汉安扬激光技术有限责任公司 | A kind of all -fiber laser with active-passive lock mould |
| CN111725692A (en) * | 2020-06-03 | 2020-09-29 | 华东师范大学 | Mode locking fiber laser based on self-phase modulation |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6097741A (en) * | 1998-02-17 | 2000-08-01 | Calmar Optcom, Inc. | Passively mode-locked fiber lasers |
| US20080151945A1 (en) * | 2006-06-27 | 2008-06-26 | Polaronyx, Inc. | Ultrashort stable mode locked fiber laser at one micron by using polarization maintaining (PM) fiber and photonic bandgap fiber (PBF) |
| CN201181809Y (en) * | 2008-02-02 | 2009-01-14 | 天津大学 | Wide tunable self-start-oscillation passive mode-locking erbium-doped optical fiber laser |
| CN101740995A (en) * | 2009-12-11 | 2010-06-16 | 苏州大学 | Totally positive dispersion cavity mode-locked all-fiber laser |
| CN102916329A (en) * | 2012-11-09 | 2013-02-06 | 天津理工大学 | Fourier domain mode locking optical fiber laser device |
| CN103378541A (en) * | 2013-07-15 | 2013-10-30 | 中国科学院上海光学精密机械研究所 | Polarization maintaining optical fiber mode-locked laser |
| CN104577679A (en) * | 2015-01-29 | 2015-04-29 | 深圳市创鑫激光股份有限公司 | Passive mode-locked fiber laser |
| CN205488987U (en) * | 2016-01-11 | 2016-08-17 | 中国工程物理研究院激光聚变研究中心 | Mode locking fiber laser |
-
2016
- 2016-01-11 CN CN201610015734.6A patent/CN105428976A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6097741A (en) * | 1998-02-17 | 2000-08-01 | Calmar Optcom, Inc. | Passively mode-locked fiber lasers |
| US20080151945A1 (en) * | 2006-06-27 | 2008-06-26 | Polaronyx, Inc. | Ultrashort stable mode locked fiber laser at one micron by using polarization maintaining (PM) fiber and photonic bandgap fiber (PBF) |
| CN201181809Y (en) * | 2008-02-02 | 2009-01-14 | 天津大学 | Wide tunable self-start-oscillation passive mode-locking erbium-doped optical fiber laser |
| CN101740995A (en) * | 2009-12-11 | 2010-06-16 | 苏州大学 | Totally positive dispersion cavity mode-locked all-fiber laser |
| CN102916329A (en) * | 2012-11-09 | 2013-02-06 | 天津理工大学 | Fourier domain mode locking optical fiber laser device |
| CN103378541A (en) * | 2013-07-15 | 2013-10-30 | 中国科学院上海光学精密机械研究所 | Polarization maintaining optical fiber mode-locked laser |
| CN104577679A (en) * | 2015-01-29 | 2015-04-29 | 深圳市创鑫激光股份有限公司 | Passive mode-locked fiber laser |
| CN205488987U (en) * | 2016-01-11 | 2016-08-17 | 中国工程物理研究院激光聚变研究中心 | Mode locking fiber laser |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846303A (en) * | 2016-06-08 | 2016-08-10 | 中国工程物理研究院激光聚变研究中心 | Mode-locking optical fiber device and mode-locking optical fiber laser device |
| CN105958307A (en) * | 2016-06-21 | 2016-09-21 | 上海理工大学 | Mode-locking device and optical fiber laser applying same |
| CN106129798A (en) * | 2016-08-26 | 2016-11-16 | 中国工程物理研究院激光聚变研究中心 | Mode locked fiber laser |
| CN107104352A (en) * | 2017-06-28 | 2017-08-29 | 中国工程物理研究院激光聚变研究中心 | Optical fiber laser and optical system |
| CN107425409A (en) * | 2017-06-28 | 2017-12-01 | 中国工程物理研究院激光聚变研究中心 | Mode-locked laser and optical system |
| CN107104352B (en) * | 2017-06-28 | 2023-09-08 | 中国工程物理研究院激光聚变研究中心 | Fiber laser and optical system |
| CN107425409B (en) * | 2017-06-28 | 2023-10-13 | 中国工程物理研究院激光聚变研究中心 | Mode-locked laser and optical system |
| CN108565671A (en) * | 2018-03-26 | 2018-09-21 | 中国工程物理研究院激光聚变研究中心 | A kind of mode locked fiber laser |
| CN110098557A (en) * | 2019-05-06 | 2019-08-06 | 武汉安扬激光技术有限责任公司 | A kind of all -fiber laser with active-passive lock mould |
| CN111725692A (en) * | 2020-06-03 | 2020-09-29 | 华东师范大学 | Mode locking fiber laser based on self-phase modulation |
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