CN204927791U - Bi -pass amplifier of photonic crystal optic fibre - Google Patents
Bi -pass amplifier of photonic crystal optic fibre Download PDFInfo
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- CN204927791U CN204927791U CN201520628189.9U CN201520628189U CN204927791U CN 204927791 U CN204927791 U CN 204927791U CN 201520628189 U CN201520628189 U CN 201520628189U CN 204927791 U CN204927791 U CN 204927791U
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Abstract
The utility model provides a bi -pass amplifier of photonic crystal optic fibre, relate to laser technical field, its pilot light passes through half -wave plate (1) in proper order, polaroid (2), first lens (3), bar -shaped photonic crystal optic fibre (5) and second lens (6) back, by first double -colored mirror (9) reflection through fourth wave plate or 45 polarization apparatuss (7) back, pass through fourth wave plate (7) once more by concave surface speculum (8) reflection, later pass through second lens (6) in proper order by first double -colored mirror (9) reflection, bar -shaped photonic crystal optic fibre (5) and first lens (3) to polaroid (2), and by reflection output, pumping light passes through first double -colored mirror (9) in proper order, second lens (6) are arrived in bar -shaped photonic crystal optic fibre (5), the utility model discloses the abundant amplifying power that utilizes bar -shaped optic fibre for the pilot light passes through bar -shaped photonic crystal optic fibre for twice, realizes the effective amplification of high energy ultrashort pulse, and it is high that it enlargies the gain.
Description
Technical field
The utility model relates to laser technology field, particularly relates to a kind of Double-pass amplifier utilizing bar-shaped photonic crystal fiber to realize the photonic crystal fiber that bilateral is amplified.
Background technology
High energy femtosecond laser has the advantages such as pulse width, peak power is high, spectral width is large, has a wide range of applications in the field such as hyperfine micro Process, micro-photonic device manufacture, ultra-fast nonlinear optical, Terahertz generation, nano biological engineering, national defence laser weapon.Obtain the Laser output of high energy femtosecond in a fiber, general employing chirped pulse amplification, but due to the restriction of optical fiber self structure, its mode field diameter is smaller, hundred micro-Jiao high energy ultrashort pulse even MJ is in communication process, nonlinear iterated process is large, easily causes the pulse after final amplification to be difficult to be obtained by effective compression the ultrashort femtosecond pulse of high s/n ratio.
Photonic crystal fiber has large mode field area, its mode field diameter is maximum at present can reach about 100 μm, and pump absorption efficiency is high, the high-gain that signal amplifies can be realized, there is the beam quality protecting inclined output characteristic and nearly diffraction limit export, its laser damage threshold is high simultaneously, is the gain media that desirable ultrashort pulse is amplified.
The amplification mode of bar-shaped photonic crystal fiber more common is at present single pass amplifier, and as shown in Figure 1, signal end, flashlight focuses on and is coupled into bar-shaped photonic crystal fiber 32 its basic light path by lens 31, reflects away through dichroic mirror 34.The pumping end of this single pass amplifier adopts backward pump, and pump light is coupled into bar-shaped photonic crystal fiber through convex lens 36 and convex lens 33, vertically arranges dichroic mirror 34,35 between convex lens 36 and convex lens 33.The flashlight of dichroic mirror 34,35 couples of 1030nm is high anti-, and thoroughly high to the pump light of 976nm, dichroic mirror 34,35 is vertically placed, on the one hand as the isolation of amplifying light, prevent the laser amplified from entering pumping LD laser, destroy pumping LD laser, on the other hand as the derivation mirror amplifying light.This single pass amplifier is the technology of current comparative maturity, but its major defect is the amplifying power that can not utilize rod-type optical fibre fully, and gain amplifier is lower.
Utility model content
Based on this, be necessary the problems referred to above existed for prior art, the utility model provides a kind of Double-pass amplifier of photonic crystal fiber, effectively to solve prior art Problems existing.
A kind of Double-pass amplifier of photonic crystal fiber, it comprises: the half-wave plate (1) coaxially set gradually along the first axle, polarizer (2), first lens (3), bar-shaped photonic crystal fiber (5), second lens (6) and the first dichroic mirror (9), and the quarter-wave plate coaxially to arrange along the second axle or 45 ° of polarization apparatuss (7) and concave mirror (8), described first axle and described second axle intersect at the plane of incidence of described first dichroic mirror (9) towards described bar-shaped photonic crystal fiber (5), and described first dichroic mirror (9) is positioned at described second axle simultaneously,
The pump light of pumping end, after described first dichroic mirror (9), is coupled in described bar-shaped photonic crystal fiber (5) by the focusing of described second lens (6);
The flashlight of signal end is successively after described half-wave plate (1) and described polarizer (2), be coupled to described bar-shaped photonic crystal fiber (5) by the focusing of described first lens (3) and pass described bar-shaped photonic crystal fiber (5), described flashlight carries out first time in conjunction with pump light and amplifies in described bar-shaped photonic crystal fiber (5), then, through the flashlight that once amplifies by described second lens (6), again through described first dichroic mirror (9), and reflexed to described quarter-wave plate or 45 ° of polarization apparatuss (7) by described first dichroic mirror (9), after described quarter-wave plate or 45 ° of polarization apparatuss (7), described quarter-wave plate or 45 ° of polarization apparatuss (7) are reflected back by described concave mirror (8) former road, again after described quarter-wave plate or 45 ° of polarization apparatuss (7), also again focused on coupling through described second lens (6) by described first dichroic mirror (9) reflection and pass back through described bar-shaped photonic crystal fiber (5), flashlight through once amplifying carries out second time in conjunction with pump light and amplifies in described bar-shaped photonic crystal fiber (5), afterwards through secondary amplifying signal light again through described first lens (3) and described polarizer (2), finally exported by described polarizer (2) reflection.
In the utility model one better embodiment, described first axle and described second axle intersect vertically.
In the utility model one better embodiment, also comprise the spherical reflector (4) be coaxially arranged between described first lens (3) and described bar-shaped photonic crystal fiber (5), the pump light through described bar-shaped photonic crystal fiber (5) is reflected back in described bar-shaped photonic crystal fiber (5) by described spherical reflector (4).
In the utility model one better embodiment, the sphere centre of described spherical reflector (4) is positioned at the end face of described bar-shaped photonic crystal fiber (5) towards described polarizer (2).
In the utility model one better embodiment, also comprise and be coaxially arranged at the second dichroic mirror (10) that described first dichroic mirror (9) receives the side of pump light, between described second dichroic mirror (10) and described first dichroic mirror (9), become V-type to arrange.
In the utility model one better embodiment, described first dichroic mirror (9) and described second dichroic mirror (10) are all high anti-, thoroughly high to pump light to flashlight, and vertically arrange each other.
In the utility model one better embodiment, also comprise the 3rd lens (11), it is coaxially arranged at the side that described second dichroic mirror (10) receives pump light.
In the utility model one better embodiment, described second lens (6), described first dichroic mirror (9), described second dichroic mirror (10) and described 3rd lens (11) are arranged in same lens barrel.
In the utility model one better embodiment, described first lens (3) are for planoconvex spotlight and precision is adjustable, and it is convex surface facing described bar-shaped photonic crystal fiber (5).
In the utility model one better embodiment, described polarizer (2) is film polarizer.
In the utility model one better embodiment, flashlight is linearly polarized light, centre wavelength 1030nm or 1053nm.
In the utility model one better embodiment, pumping end adopts high power laser light, the pump light of output center wavelength 976nm.
Compared to prior art, the Double-pass amplifier of the photonic crystal fiber that the utility model provides utilizes the amplifying power of rod-type optical fibre fully, flashlight is made to pass twice through bar-shaped photonic crystal fiber, extract the energy stored in rod-type optical fibre, realize effective amplification of high energy ultrashort pulse, its gain amplifier is high.
Accompanying drawing explanation
Fig. 1 is that the single-pass of existing bar-shaped photonic crystal fiber amplifies index path;
The index path of the Double-pass amplifier of the photonic crystal fiber that Fig. 2 provides for the utility model preferred embodiment.
Embodiment
For the ease of understanding the utility model, below with reference to relevant drawings, the utility model is described more fully.Better embodiment of the present utility model is given in accompanying drawing.But the utility model can realize in many different forms, is not limited to execution mode described herein.On the contrary, provide the object of these execution modes be make to disclosure of the present utility model understand more thorough comprehensively.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.Term as used herein " vertical ", " level ", "left", "right" and similar statement just for illustrative purposes, do not represent it is unique execution mode.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present utility model understand usually.The object of the term used in specification of the present utility model herein just in order to describe concrete execution mode, is not intended to be restriction the utility model.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
Refer to Fig. 2, the utility model one preferred embodiment provides a kind of Double-pass amplifier of photonic crystal fiber, it comprises: the half-wave plate 1, polarizer 2, first lens 3, bar-shaped photonic crystal fiber 5, second lens 6 and the first dichroic mirror 9 that coaxially set gradually along the first axle, and the quarter-wave plate coaxially to arrange along the second axle or 45 ° of polarization apparatuss 7 and concave mirror 8, described first axle and described second axle intersect at the plane of incidence of described first dichroic mirror 9 towards described bar-shaped photonic crystal fiber 5, and described first dichroic mirror 9 is positioned at described second axle simultaneously, the pump light of pumping end, after described first dichroic mirror 9, is focused on by described second lens 6 and is coupled in described bar-shaped photonic crystal fiber 5, the flashlight of signal end is successively after described half-wave plate 1 and described polarizer 2, focused on by described first lens 3 and be coupled to described bar-shaped photonic crystal fiber 5 and pass described bar-shaped photonic crystal fiber 5, described flashlight carries out first time in conjunction with pump light and amplifies in described bar-shaped photonic crystal fiber 5, then, through the flashlight that once amplifies by the second lens 6, again through described first dichroic mirror 9, and reflexed to described quarter-wave plate or 45 ° of polarization apparatuss 7 by described first dichroic mirror 9, after described quarter-wave plate or 45 ° of polarization apparatuss 7, described quarter-wave plate or 45 ° of polarization apparatuss 7 are reflected back by the described former road of concave mirror 8, again reflected by described first dichroic mirror 9 and again focus on coupling through described second lens 6 after described quarter-wave plate or 45 ° of polarization apparatuss 7 and pass back through described bar-shaped photonic crystal fiber 5, flashlight through once amplifying carries out second time in conjunction with pump light and amplifies in described bar-shaped photonic crystal fiber 5, afterwards through secondary amplifying signal light again through the first lens 3 and described polarizer 2, finally reflected output by described polarizer 2.
Preferably, described first axle and described second axle intersect vertically.
The utility model adopts protects partially bar-shaped photonic crystal fiber 5 as gain amplifier medium, the nonlinear iterated process of fibre system can be reduced, flashlight after making to amplify can effectively be compressed, adopt that polarizer 2 carries out Polarization Control, coordinates the first dichroic mirror 9 simultaneously, bilateral that quarter-wave plate or 45 ° of polarization apparatuss 7 and concave mirror 8 have effectively achieved flashlight amplifies, obtain the maximum gain of flashlight.
In the present embodiment, flashlight is linearly polarized light, centre wavelength 1030nm, power 800mW, pulsewidth 600ps, spectral width 6nm, repetition 200KHz.It should be noted that, this group parameter is the present embodiment selected parameter, and in other occasion, wavelength also can be 1053nm, and power, pulsewidth, spectral width, repetition can select other applicable value.
In the present embodiment, the effect of described half-wave plate 1 is the direction of vibration of the linear polarization of adjustment flashlight, makes flashlight all through polarizer 2.
Preferably, described polarizer 2 is film polarizer, the linearly polarized light in its transmission certain vibration direction, reflects the light of the direction of vibration vertical with this transmission direction, for forming the light path that bilateral is amplified.
In the present embodiment, described first lens 3 focus on the flashlight from the transmission of described polarizer 2, preferably, described first lens 3 are loaded in accurate adjustment rack, have fine adjustment function up and down, flashlight is made can be accurately coupled in bar-shaped photonic crystal fiber 5, in the present embodiment, in order to easy to assembly, described first lens 3 are planoconvex spotlight, it is convex surface facing described bar-shaped photonic crystal fiber 5, and focal length is 20mm.In the present embodiment, focal length is in 17-22mm scope, and just when 20mm, effect is best.Be understandable that, the focussing force of described first lens 3 can make flashlight be coupled into bar-shaped photonic crystal fiber 5, and under Best Coupling, can ensure that most of energy of flashlight is in the fibre core of bar-shaped photonic crystal fiber 5.
In the present embodiment, the Double-pass amplifier of described photonic crystal fiber also comprises the spherical reflector 4 be coaxially arranged between described first lens 3 and described bar-shaped photonic crystal fiber 5, and the pump light through described bar-shaped photonic crystal fiber 5 is reflected back described bar-shaped photonic crystal fiber 5 by described spherical reflector 4.Particularly, the sphere centre of described spherical reflector 4 is positioned at the end face of described bar-shaped photonic crystal fiber 5 towards described polarizer 2, thus, the pump light exported from described bar-shaped photonic crystal fiber 5 is under the reflection of described spherical reflector 4, come back in described bar-shaped photonic crystal fiber 5, pump light is also achieved and passes twice through the absorption efficiency that bar-shaped photonic crystal fiber 5 improves photonic crystal fiber 5 pairs of pump lights, and then the utilance of pump light can be improved, reduce the heat that unnecessary pump light produces, improve the stability of system.
In the present embodiment, described bar-shaped photonic crystal fiber 5, as the gain media of the Double-pass amplifier of photonic crystal fiber, can amplify the flashlight by its fibre core.Particularly, described bar-shaped photonic crystal fiber 5 be the polarization maintaining optical fibre (core diameter is the bigger the better) of fibre core 100 μm, length 80cm, mode field diameter 76 μm, flashlight numerical aperture 0.02, the pump absorption coefficient of 976nm wavelength be 30dB/m, overall diameter 1.7mm, both-end welding have end cap.
In the present embodiment, the effect of described second lens 6 is mainly used in focusing on coupling pumping light.
In the present embodiment, quarter-wave plate or 45 ° of polarization apparatuss 7, for changing the polarization direction of flashlight, ensure the polarization direction 90-degree rotation altogether when flashlight passes twice through, and then the output signal light amplified finally is derived from described polarizer 2.
In the present embodiment, described concave mirror 8, for reflected signal light, makes the former road of flashlight return.
In the present embodiment, the Double-pass amplifier of described photonic crystal fiber also comprises and is coaxially arranged at the second dichroic mirror 10 that described first dichroic mirror 9 receives the side of pump light, V-type is become to arrange between described second dichroic mirror 10 and described first dichroic mirror 9, be understandable that, the mode that forward can be adopted to arrange between described second dichroic mirror 10 and described first dichroic mirror 9, makes it be positive V-type, also can adopt the mode oppositely arranged, it is made to be reverse V-shaped, i.e. " ∧ type ".Preferably, described first dichroic mirror 9 and described second dichroic mirror 10 are all high anti-, thoroughly high to pump light to flashlight, and vertically arrange each other.Described first dichroic mirror 9 and described second dichroic mirror 10 1 aspect are the isolation to amplifying light, prevent the laser (i.e. flashlight) amplified from entering pumping LD laser, destroy pumping LD laser, on the other hand, as the speculum that bilateral is amplified, the light path providing bilateral to amplify reflects.
In the present embodiment, the Double-pass amplifier of described photonic crystal fiber also comprises the 3rd lens 11, and described 3rd lens 11 are coaxially arranged at the side that described second dichroic mirror 10 receives pump light.
Preferably, described second lens 6, described first dichroic mirror 9, described second dichroic mirror 10 and described 3rd lens 11 are arranged in same lens barrel.
In the present embodiment, pumping end adopts high power laser light, the pump light of output center wavelength 976nm, pump light numerical aperture 0.6.Pump light is coupled in the inner cladding of bar-shaped photonic crystal fiber 5, for the amplification of bar-shaped photonic crystal fiber 5 provides gain by described 3rd lens 11 and described second lens 6 successively.
The light path of the Double-pass amplifier of described photonic crystal fiber is: the pump light of pumping end, after the collimation of the 3rd lens 11, passes the second dichroic mirror 10 and the first dichroic mirror 9 successively; Then the coupling through the second lens 6 focuses on, and enters described bar-shaped photonic crystal fiber 5, is reflected back described bar-shaped photonic crystal fiber 5 through after described bar-shaped photonic crystal fiber 5 by spherical reflector 4.The flashlight of signal end collimation input enters half-wave plate 1, after the polarization adjustment of half-wave plate 1, enters polarizer 2 with the polarization direction identical with the transmission direction of polarizer 2, and almost all by polarizer 2; Then after the focusing coupling of lens 3, enter bar-shaped photonic crystal fiber 5, most of energy of flashlight is all in the fibre core of bar-shaped photonic crystal fiber 5; Flashlight is through after bar-shaped photonic crystal fiber 5, by the second lens 6 directive first dichroic mirror 9, and reflexed to quarter-wave plate or 45 ° of polarization apparatuss 7 by the first dichroic mirror 9, concave mirror 8 is arrived after quarter-wave plate or 45 ° of polarization apparatuss 7, quarter-wave plate or 45 ° of polarization apparatuss 7 are reflected back by concave mirror 8, and again by quarter-wave plate or 45 ° of polarization apparatuss 7, now flashlight twice is through quarter-wave plate or 45 ° of polarization apparatuss 7, change of polarized direction 90 degree (vertical with the transmission direction of polarizer 2); Flashlight enters bar-shaped photonic crystal fiber 5 again through the reflection of the first dichroic mirror 9 and the focusing coupling of the second lens 6 afterwards, through after bar-shaped photonic crystal fiber 5 through the first lens 3 directive polarizer 2, because the polarization direction of now flashlight is perpendicular to the transmission direction of polarizer 2, is therefore polarized sheet 2 and reflects and export.
Be understandable that, when flashlight first time is by bar-shaped photonic crystal fiber 5, namely through the first logical amplification, when flashlight second time is back through bar-shaped photonic crystal fiber 5, namely lead to amplification in conjunction with pump light through second, bilateral can be realized to flashlight thus and amplify.
Be understandable that, through the unnecessary pump light of bar-shaped photonic crystal fiber 5, namely the end face having gone out bar-shaped photonic crystal fiber 5 is dispersed out, in the present embodiment, adopt spherical reflector 4, and make its sphere centre be positioned at the output end face of bar-shaped photonic crystal fiber 5, the pump light exported thus is under the reflection of spherical reflector 4, come back in bar-shaped photonic crystal fiber 5, therefore the utilance of pump light can be improved, and effectively can reduce the heat of unnecessary pump light generation, improve the stability of the Double-pass amplifier of photonic crystal fiber.
Checking shows, the Double-pass amplifier of described photonic crystal fiber has efficient amplifying power, is greater than 2.5W, when pumping light power reaches 200W at input signal light power, the ultrashort pulse that can realize exporting hundred psecs of amplifying more than light 70W exports, and gain reaches 35 times.
Compared to prior art, the Double-pass amplifier of the photonic crystal fiber that the utility model provides adopts the partially bar-shaped photonic crystal fiber 5 of the guarantor of large mould field as gain amplifier medium, the nonlinear iterated process of fibre system can be reduced, flashlight after making to amplify can effectively be compressed, adopt that polarizer 2 carries out Polarization Control, coordinates the first dichroic mirror 9 simultaneously, bilateral that quarter-wave plate or 45 ° of polarization apparatuss 7 and concave mirror 8 have effectively achieved flashlight amplifies, obtain the maximum gain of flashlight.And, the Double-pass amplifier of described photonic crystal fiber adopts spherical reflector 4 to reflect through the pump light of bar-shaped photonic crystal fiber 5, pump light is also achieved and passes twice through bar-shaped photonic crystal fiber 5, improve the absorption efficiency of bar-shaped photonic crystal fiber 5 pairs of pump lights, reduce the thermal effect of the unnecessary pump light generation through bar-shaped photonic crystal fiber 5, improve the stability of system.Finally effectively can solve high energy ultrashort pulse efficient scale-up problem in a fiber.
The above embodiment only have expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (12)
1. the Double-pass amplifier of a photonic crystal fiber, it is characterized in that, comprise: the half-wave plate (1) coaxially set gradually along the first axle, polarizer (2), first lens (3), bar-shaped photonic crystal fiber (5), second lens (6) and the first dichroic mirror (9), and the quarter-wave plate coaxially to arrange along the second axle or 45 ° of polarization apparatuss (7) and concave mirror (8), described first axle and described second axle intersect at the plane of incidence of described first dichroic mirror (9) towards described bar-shaped photonic crystal fiber (5), and described first dichroic mirror (9) is positioned at described second axle simultaneously,
The pump light of pumping end, after described first dichroic mirror (9), is coupled in described bar-shaped photonic crystal fiber (5) by the focusing of described second lens (6);
The flashlight of signal end is successively after described half-wave plate (1) and described polarizer (2), be coupled to described bar-shaped photonic crystal fiber (5) by the focusing of described first lens (3) and pass described bar-shaped photonic crystal fiber (5), described flashlight carries out first time in conjunction with pump light and amplifies in described bar-shaped photonic crystal fiber (5), then, through the flashlight that once amplifies by described second lens (6), again through described first dichroic mirror (9), and reflexed to described quarter-wave plate or 45 ° of polarization apparatuss (7) by described first dichroic mirror (9), after described quarter-wave plate or 45 ° of polarization apparatuss (7), described quarter-wave plate or 45 ° of polarization apparatuss (7) are reflected back by described concave mirror (8) former road, again after described quarter-wave plate or 45 ° of polarization apparatuss (7), also again focused on coupling through described second lens (6) by described first dichroic mirror (9) reflection and pass back through described bar-shaped photonic crystal fiber (5), flashlight through once amplifying carries out second time in conjunction with pump light and amplifies in described bar-shaped photonic crystal fiber (5), afterwards through secondary amplifying signal light again through described first lens (3) and described polarizer (2), finally exported by described polarizer (2) reflection.
2. the Double-pass amplifier of photonic crystal fiber as claimed in claim 1, it is characterized in that, described first axle and described second axle intersect vertically.
3. the Double-pass amplifier of photonic crystal fiber as claimed in claim 2, it is characterized in that, also comprise the spherical reflector (4) be coaxially arranged between described first lens (3) and described bar-shaped photonic crystal fiber (5), the pump light through described bar-shaped photonic crystal fiber (5) is reflected back in described bar-shaped photonic crystal fiber (5) by described spherical reflector (4).
4. the Double-pass amplifier of photonic crystal fiber as claimed in claim 3, it is characterized in that, the sphere centre of described spherical reflector (4) is positioned at the end face of described bar-shaped photonic crystal fiber (5) towards described polarizer (2).
5. the Double-pass amplifier of photonic crystal fiber as claimed in claim 1, it is characterized in that, also comprise and be coaxially arranged at the second dichroic mirror (10) that described first dichroic mirror (9) receives the side of pump light, between described second dichroic mirror (10) and described first dichroic mirror (9), become V-type to arrange.
6. the Double-pass amplifier of photonic crystal fiber as claimed in claim 5, is characterized in that, described first dichroic mirror (9) and described second dichroic mirror (10) are all high anti-, thoroughly high to pump light to flashlight, and vertically arrange each other.
7. the Double-pass amplifier of photonic crystal fiber as claimed in claim 5, is characterized in that, also comprise the 3rd lens (11), and it is coaxially arranged at the side that described second dichroic mirror (10) receives pump light.
8. the Double-pass amplifier of photonic crystal fiber as claimed in claim 7, it is characterized in that, described second lens (6), described first dichroic mirror (9), described second dichroic mirror (10) and described 3rd lens (11) are arranged in same lens barrel.
9. the Double-pass amplifier of photonic crystal fiber as claimed in claim 1, is characterized in that, described first lens (3) are for planoconvex spotlight and precision is adjustable, and it is convex surface facing described bar-shaped photonic crystal fiber (5).
10. the Double-pass amplifier of photonic crystal fiber as claimed in claim 1, it is characterized in that, described polarizer (2) is film polarizer.
The Double-pass amplifier of 11. photonic crystal fibers as claimed in claim 1, it is characterized in that, flashlight is linearly polarized light, centre wavelength 1030nm or 1053nm.
The Double-pass amplifier of 12. photonic crystal fibers as claimed in claim 1, is characterized in that, pumping end adopts high power laser light, the pump light of output center wavelength 976nm.
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| CN109298582A (en) * | 2018-09-06 | 2019-02-01 | 中国科学院上海光学精密机械研究所 | Generate the device of high-energy Coherent Wideband continuous spectrum |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109298582A (en) * | 2018-09-06 | 2019-02-01 | 中国科学院上海光学精密机械研究所 | Generate the device of high-energy Coherent Wideband continuous spectrum |
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Effective date of registration: 20210525 Address after: Room 4-2-5274, floor 2, building 4, Free Trade Industrial Park, No. 2168, Zhenghe Fourth Road, Fengdong new town, Xi'an City, Shaanxi Province, 710000 Patentee after: Xi'an Zhongke Juneng Laser Technology Co.,Ltd. Address before: 710119, No. 17, information Avenue, new industrial park, hi tech Zone, Shaanxi, Xi'an Patentee before: Xi'an Institute of Optics and precision machinery, Chinese Academy of Sciences |
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