CN1877926A - High-power blue-light fiber laser - Google Patents
High-power blue-light fiber laser Download PDFInfo
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- CN1877926A CN1877926A CN 200610043062 CN200610043062A CN1877926A CN 1877926 A CN1877926 A CN 1877926A CN 200610043062 CN200610043062 CN 200610043062 CN 200610043062 A CN200610043062 A CN 200610043062A CN 1877926 A CN1877926 A CN 1877926A
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Abstract
The invention discloses a high-power blue optical fiber laser, which contains front end input coupling device, wherein the first optical fiber device is set behind the front end input coupling device; the first optical fiber device, multiple frequency device and second optical fiber device connect to form resonant cavity through optical fiber; the resonant cavity is changed into activating cavity excited by double-end pump of front end input coupling device and rear end pump device; the laser working material is fiber core material of optical fiber system double-layer optical fiber, which outputs high-power blue laser through output aligning lens after realizing cavity multiple frequency. The invention improves switching efficiency, which is applied in the laser reserving, image display, laser TV and seawater communication domains widely.
Description
Technical field
The present invention relates to double-clad optical fiber laser, particularly a kind of high power, high efficiency blue laser fiber laser.
Background technology
In recent years, along with the maturation of cladding pumping technology, double-clad optical fiber laser is good with its conversion efficiency height, output quality, compact conformation realizes that easily advantage such as integrated has obtained development rapidly.Fiber laser is little with its volume, advantages such as power output is high, good beam quality can be used as desirable red, green, blue tricolor laser sources, field such as laser projection, laser television, and application prospect is very bright.Nowadays green-light fiber laser has been realized high power output, the development bottleneck in this field mainly is the Blue-light optical fiber laser that can produce high power levels at present, all be to produce the output of blue light optical-fiber laser by non-linear effects such as conversions on the active optical fiber in the past, but its power output is low, usually lower in milliwatt magnitude and conversion efficiency, limited its range of application, other is bulky because of Laser Devices such as the scheme that produces blue light by solid state laser or semiconductor laser, efficient is low, inherent shortcomings such as cost height and can not be widely used in Projection Display, laser television, seawater communication etc. needs the field of small size blue-light source.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of high-power blue-light fiber laser, this laser power is big, volume is little, efficient is high, good stability, life-span height, noise are low.
Technical scheme of the present invention is achieved in that
High-power blue-light fiber laser of the present invention comprises: front end input coupling device, first fiber device, frequency multiplication device, second fiber device and terminal pump arrangement; It is characterized in that behind the front end input coupling device first fiber device is set, first fiber device, frequency multiplication device and second fiber device connect and compose resonant cavity by optical fiber successively, and terminal pump arrangement is set behind second fiber device.Both-end pumping at front end input coupling device and terminal pump Pu device excites down, this resonant cavity becomes active cavity, working-laser material is the core material of fibre system doubly clad optical fiber, realizes intracavity frequency doubling through the frequency multiplication device again, after the blue laser of output collimating lens output high-power.
Described front end input coupling device comprises: the first laser diode LD pumping source, front end dichroic mirror, first input coupled lens group and the 940nm high-frequency impulse information source oscillator; Set gradually the first laser diode LD pumping source, front end dichroic mirror and the first input coupled lens group along optical path direction, the three is in same light path, 135 ° of front end dichroic mirrors tilt to place, and the output of information source oscillator is perpendicular to this light path, and are arranged on the dichroiscopic top of front end;
The high transmittance film of the high-reflecting film of this front end dichroic mirror plating information source oscillator output signal, plating laser diode LD pumping source output pump light; The fine output of this first laser diode LD pumping source magnetic tape trailer, the peak absorbtivity wavelength of wavelength and doubly clad optical fiber core material is complementary; This first input coupled lens group adopts non-spherical lens group or micro objective.
Described first fiber device comprises: first double color plate, optical fiber contact pins, first doubly clad optical fiber and optical fiber twine rod; First double color plate is pasted with optical fiber contact pins and is connected, and the first doubly clad optical fiber left end is inserted in the optical fiber contact pins and fiber end face is close to first double color plate, and the first doubly clad optical fiber remainder is wrapped in optical fiber and twines on the rod;
This first double color plate is high saturating to the pump light that front end input coupling device sends, and is anti-to fundamental light wave and frequency doubled light wave height.
Described frequency multiplication device is made of first, second optical fiber contact pins, first, second GRIN Lens and frequency-doubling crystal; The right-hand member of first doubly clad optical fiber of first fiber device inserts first optical fiber contact pins, paste the left side of the right side of first optical fiber contact pins and first GRIN Lens, the left side of frequency-doubling crystal is close in the right side of first GRIN Lens, the left side of the right side of frequency-doubling crystal and second GRIN Lens is close to, and the right side of second GRIN Lens and second optical fiber contact pins are pasted.
Described second fiber device comprises: second doubly clad optical fiber, optical fiber twine rod, optical fiber contact pins, second double color plate; In second optical fiber contact pins, second doubly clad optical fiber is wrapped in optical fiber and twines on the rod in the left end insertion frequency multiplication device of second doubly clad optical fiber, and the second doubly clad optical fiber right-hand member inserts in the optical fiber contact pins, and the optical fiber contact pins and second double color plate are pasted;
This second double color plate is high saturating, high anti-, saturating to the frequency doubled light wave height to fundamental light wave to the pump light of terminal pump arrangement.
Described terminal pump arrangement is made up of terminal dichroic mirror, the second input coupled lens group, the second laser diode LD pumping source and output collimating lens; Place at 45 ° of inclination angles of terminal dichroic mirror, the second input coupled lens group is set thereafter, after the second input coupled lens group the second laser diode LD pumping source is set, the three is in same collimated light path, terminal dichroic mirror tilts to place for 45 ° to be exported blue light with the direction perpendicular to this light path, the output collimating lens is positioned at this vertical optical path and dichroiscopic endways top.
This end dichroic mirror is high saturating to the pump light of the second laser diode LD pumping source, and is anti-to output frequency doubled light wave height; The fine output of this second laser diode LD pumping source magnetic tape trailer, the peak absorbtivity wavelength of the wavelength and the second doubly clad optical fiber core material is complementary; This output collimating lens is single non-globe lens or micro objective.
First doubly clad optical fiber that described first fiber device comprises is the same with material, the architectural characteristic of second doubly clad optical fiber that second fiber device comprises, and all is doubly clad optical fibers of particular design, and concrete parameter is as follows:
Core material is a working-laser material, make by the quartz glass that neodymium Nd, germanium Ge mix altogether, its core diameter is between the 27-33 micron, numerical aperture is between 0.04-0.08, neodymium-doped Nd concentration (representing with absorption coefficient) is 5-10dB/m (pumping wavelength is between 808-812nm), its multimode pumping inner cladding diameter is between the 120-130 micron, and numerical aperture is between 0.38-0.45, and multimode pumping inner cladding cross-sectional profile is rectangle, hexagon or other polygonized structures.
The frequency-doubling crystal of described frequency multiplication device is the non-linear crystal with matching angle and fundamental light wave appearance coupling, as KTP KTP, beta-barium borate BBO, or adopt the periodic polarized lithium niobate PPLN of quasi-phase matching, periodic polarized crystal such as KTP PPKTP, this frequency-doubling crystal left side be coated with to first laser diode LD pumping source output laser high saturating, to fundamental frequency light high saturating, to the high anti-deielectric-coating of frequency doubled light, the right side is coated with the anti-reflection film to the output laser of the second laser diode LD pumping source, fundamental frequency light and frequency doubled light.
The radius that first, second optical fiber of described first, second fiber device twines rod is 35-39mm.
The present invention adopts neodymium ion (Nd) doping double-cladding optical fiber as working-laser material, the high gain lasers of utilizing bending loss of optical fiber to suppress effectively between neodymium ion (Nd) 1082-1090nm is vibrated, guarantee the high power vibration between its 938-942nm, and employing intracavity frequency doubling technology, the frequency-doubling conversion efficiency height, and between optical fiber and frequency multiplication device, adopt ripe coupled apparatus and technology such as optical fiber contact pins and GRIN Lens, coupling efficiency is higher, has realized the blue light optical-fiber laser output of high power, high light beam quality.Because this laser aid adopted optical fiber structure, have that compact conformation, volume are little, the characteristics of working stability, can realize integratedly, can be widely used in the fields such as laser television, seawater communication.
Description of drawings
Fig. 1 is the structural representation of high-power blue-light fiber laser of the present invention;
Fig. 2 is the schematic cross-section of doubly clad optical fiber of the present invention.
Below in conjunction with accompanying drawing content of the present invention is described further.
Embodiment
With reference to shown in Figure 1, in the high-power blue-light fiber laser of the present invention, setting gradually laser diode LD pumping source 1 from left to right along optical path direction, dichroic mirror 2, input coupled lens group 3 and double color plate 5, four are in same light path, dichroic mirror 2 tilts to place with 135 °, the output of information source oscillator 4 is perpendicular to this light path, and be arranged on the top of dichroic mirror 2, the right side of double color plate 5 is pasted with optical fiber contact pins 6 and is connected, the left end of doubly clad optical fiber 7 is inserted in the optical fiber contact pins 6 and fiber end face is close to double color plate 5, the remainder of first doubly clad optical fiber 7 is wrapped in optical fiber and twines on the rod 8, the right-hand member of first doubly clad optical fiber 7 inserts in the optical fiber contact pins 9, paste the left side of the right side of optical fiber contact pins 9 and GRIN Lens 10, the left side of frequency-doubling crystal 11 is close in the right side of GRIN Lens 10, the left side of the right side of frequency-doubling crystal 11 and GRIN Lens 12 is close to, the right side of GRIN Lens 12 and optical fiber contact pins 13 are pasted, the left end of second doubly clad optical fiber 14 inserts in the optical fiber contact pins 13, second cladded fiber 14 is wrapped in optical fiber and twines on the rod 15, the right-hand member of second doubly clad optical fiber 14 inserts in the optical fiber contact pins 16, optical fiber contact pins 16 is pasted with double color plate 17, the dichroic mirror 18 that place at 45 ° of inclination angles is set behind the double color plate 17, set gradually input coupled lens group 19 and laser diode LD pumping source 20 behind the dichroic mirror 18, and double color plate 17, dichroic mirror 18, input coupled lens group 19 and laser diode LD pumping source 20 4 are in same collimated light path, dichroic mirror 18 is placed blue light with the direction output perpendicular to this light path with 45 ° of inclination angles, and output collimating lens 21 is positioned at this vertical optical path and above dichroic mirror 18.
With reference to shown in Figure 2, this is the schematic cross-section of used doubly clad optical fiber, and 40 is fiber core, and 41 is multimode pumping inner cladding, and 42 is surrounding layer, and 43 is protective layer.Its structure is the middle fiber core 40 that is, the fiber core 40 outer multi-mode pump Pu inner claddings 41 that are provided with have surrounding layer 42 outside the multimode pumping inner cladding 41, the surrounding layer 42 outer protective layers 43 that are provided with.
The concrete course of work: first fiber device 31, the frequency multiplication device 32 and second fiber device 33 constitute the F-P resonant cavity of a standard, front cavity mirror is double color plate 5 (plating 808nm pump light high transmittance film and a fundamental light wave (between 938-942nm), the high-reflecting film of frequency multiplication light wave (between 469-471nm)), Effect of Back-Cavity Mirror is that (plating 808nm pump light is high saturating for double color plate 17, fundamental light wave (between 938-942nm) is high anti-, frequency multiplication light wave (between 469-471nm) high transmittance film), annexation between each device and the part is as above with reference to shown in Figure 1, two laser diode LD pumping sources 1,20 carry out end pumping after the past respectively, through first, the second input coupled lens group 3,19 focussing force is coupled into first with pumping laser respectively, second fiber device 31, doubly clad optical fiber 7 in 33,14 inner cladding, with fibre core Nd ion excitation, form active cavity, under the guiding of laser signal between the high repetition 938-942nm that front end input coupling device 30 provides, and in conjunction with of the inhibition of experimental techniques such as bending loss of optical fiber to four-level laser generation between Nd ion 1082-1090nm, in this F-P resonant cavity, set up the light laser vibration between 938-942nm, the second harmonic effect of frequency-doubling crystal 11 realizes intracavity frequency doubling in intracavity frequency doubling device 32, to obtain the output of high-power blue-light collimation by output coupled lens 21 at last, the concrete parameter of each several part element is as follows in the course of work:
Described front end input coupling device 30 comprises: laser diode LD pumping source 1, dichroic mirror 2 and input coupled lens group 3, (selectable) can produce the information source oscillator 4 of high-frequency impulse between 938-942nm; In the present embodiment, this laser diode LD pumping source 1 adopts the fine output of magnetic tape trailer, centre wavelength is at 808nm, peak power can reach the commercial lasers diode of 25W, tail optical fiber output numerical aperture is 0.22, spot size is 200 microns, and the peak absorbtivity wavelength of its output wavelength and core material is complementary; High-frequency pulse signal between the 938-942nm of 2 pairs of information source oscillators of this dichroic mirror, 4 outputs is high instead (in the present embodiment, reflectivity＞98%), to the pumping light high saturating (transmissivity＞99% in the present embodiment) of the 808nm of laser diode LD pumping source 1 output; This input coupled lens group 3 can be with the fibre core of the flashlight coupled into double-clad fiber 7 of information source oscillator 4 and with the inner cladding of the pump light coupled into double-clad fiber 7 of laser diode LD pumping source 1 output, and it adopts a non-spherical lens group.
Described first fiber device 31 comprises that double color plate 5, optical fiber contact pins 6, doubly clad optical fiber 7 and optical fiber twine rod 8; The pump light high saturating (in the present embodiment, transmissivity＞96%) of the 808nm that 5 pairs of front end inputs of this double color plate coupling device 30 sends is to fundamental light wave and frequency doubled light wave height anti-(reflectivity＞99% in the present embodiment); The selection that this optical fiber twines excellent 8 radiuses makes curved fiber produce greater than the bending loss of 10dB the bending loss of the generation of the laser transition between 938-942nm less than 0.5dB the laser generation between 1082-1090nm.
Described frequency multiplication device 32 is made of optical fiber contact pins 9,13, GRIN Lens 10,12 and frequency-doubling crystal 11; Optical fiber contact pins 9 and GRIN Lens 10 are closely pasted, and optical fiber contact pins 13 and GRIN Lens 12 are closely pasted, and the another side of GRIN Lens 10,12 is close to the front/rear end of frequency-doubling crystal 11 respectively.
Described second fiber device 33 comprises that doubly clad optical fiber 14, optical fiber twine rod 15, optical fiber contact pins 16, double color plate 17; In the present embodiment, the selection of twining excellent 15 radiuses of this optical fiber makes curved fiber produce greater than the bending loss of 10dB the laser generation between 1082-1090nm the laser transition between 938-942nm is produced bending loss less than 0.5dB; The 808nm pump light of 17 pairs of terminal pump arrangements 34 of this double color plate is high thoroughly (in the present embodiment, transmissivity＞96%), high instead (in the present embodiment to fundamental light wave (between 938-942nm), reflectivity＞99%), to frequency multiplication light wave (between 469-471nm) high saturating (transmissivity＞90% in the present embodiment).
Described terminal pump arrangement 34 is made up of dichroic mirror 18, input coupled lens group 19, laser diode (LD) pumping source 20 and output collimating lens 21; In the present embodiment, this laser diode LD pumping source 20 adopts the fine output of magnetic tape trailer, centre wavelength is at 808nm, power is adjustable continuously, peak power output can reach the commercial lasers diode of 35W, tail optical fiber output numerical aperture is 0.22, and spot size is 200 microns, and the peak absorbtivity wavelength of its output wavelength and core material is complementary; The pump light of the 808nm of 18 pairs of laser diode LD pumping sources 20 of this dichroic mirror high saturating (in the present embodiment, transmissivity＞99%) is to output frequency multiplication light wave (between 469-471nm) high anti-(reflectivity＞98% in the present embodiment); Input coupled lens group 19 is with the inner cladding of the 808nm pump light coupled into double-clad fiber 14 of laser diode LD pumping source 20, and it is non-spherical lens group or micro objective group normally, and output collimating lens 21 adopts single non-globe lens or micro objective.
The doubly clad optical fiber 14 that the doubly clad optical fiber 7 that described first fiber device 31 comprises and second fiber device 33 comprise all adopts the The Nomenclature Composition and Structure of Complexes of particular design: core material is a working-laser material, by neodymium (Nd), the quartz glass that germanium (Ge) is mixed is altogether made, its fibre core 40 diameters are between the 27-33 micron, numerical aperture is between 0.04-0.08, Nd ion doped (Nd) concentration (representing with absorption coefficient) is 5-10dB/m (pumping wavelength is between 808-812nm), its multimode pumping inner cladding 41 diameters are between the 120-130 micron, numerical aperture is between 0.38-0.45, multimode pumping inner cladding cross-sectional profile is a rectangle, hexagon or other polygonized structures, doubly clad optical fiber 7,14 length is respectively 25m.By the design of this The Nomenclature Composition and Structure of Complexes, make described doubly clad optical fiber can greatly improve the ratio of the transition branch of fluorescence wave band between its 938-942nm.
The frequency-doubling crystal 11 of described frequency multiplication device 32, be the KTP ktp crystal of 4 * 4 * 5mm in the present embodiment, employing is to the II class phase matched mode of wavelength between 938-942nm, this frequency-doubling crystal left side cross pair 808nm pump light high saturating, to fundamental frequency light between 938-942nm high saturating, to the high anti-deielectric-coating of frequency doubled light between 469-471nm, the anti-reflection film of frequency doubled light between fundamental frequency light and 469-471nm is crossed between pair 808nm pump light, 938-942nm in the right side.
The high-power blue-light fiber laser of this example output blue laser power can reach watt more than the level, and tiltedly efficient is higher, and good beam quality is desirable blue light fiber optic laser source.
Claims (9)
1, a kind of high-power blue-light fiber laser comprises, front end input coupling device (30), first fiber device (31), frequency multiplication device (32), second fiber device (33) and terminal pump arrangement (34); It is characterized in that, behind the front end input coupling device (30) first fiber device (31) is set, first fiber device (31), frequency multiplication device (32) and second fiber device (33) are connected to form resonant cavity by optical fiber successively, and terminal pump arrangement (34) is set behind second fiber device (33).
2, high-power blue-light fiber laser according to claim 1, it is characterized in that described front end input coupling device (30) comprising: laser diode LD pumping source (1), dichroic mirror (2), input coupled lens group (3) and 940nm high-frequency impulse information source oscillator (4); Set gradually laser diode LD pumping source (1), dichroic mirror (2) and input coupled lens group (3) along optical path direction, the three is in same light path, dichroic mirror (2) the 135 ° of placements of tilting, the output of information source oscillator (4) are perpendicular to this light path, and be arranged on dichroic mirror (2) directly over;
The high-reflecting film of this dichroic mirror (2) plating information source oscillator (4) output signal, the high transmittance film of plating laser diode LD pumping source (1) output pump light; The fine output of this laser diode LD pumping source (1) magnetic tape trailer, the peak absorbtivity wavelength of wavelength and first, second doubly clad optical fiber (7,14) core material is complementary; This input coupled lens group (3) adopts non-spherical lens group or micro objective.
3, high-power blue-light fiber laser according to claim 1 is characterized in that, described first fiber device (31) comprising: double color plate (5), optical fiber contact pins (6), first doubly clad optical fiber (7) and optical fiber twine rod (8); Double color plate (5) is pasted with optical fiber contact pins (6) and is connected, and first doubly clad optical fiber (7) left end is inserted in the optical fiber contact pins (6) and fiber end face is close to double color plate (5), and first doubly clad optical fiber (7) remainder is wrapped in optical fiber and twines on the rod (8);
Double color plate (5) is high saturating to the pump light that front end input coupling device (30) sends, and is anti-to fundamental light wave and frequency doubled light wave height.
4, high-power blue-light fiber laser according to claim 1 is characterized in that, described frequency multiplication device (32) is made of first, second optical fiber contact pins (9,13), first, second GRIN Lens (10,12) and frequency-doubling crystal (11); The right-hand member of first doubly clad optical fiber (7) of first fiber device (31) inserts optical fiber contact pins (9), paste the left side of the right side of optical fiber contact pins (9) and GRIN Lens (10), the left side of frequency-doubling crystal (11) is close in the right side of GRIN Lens (10), the left side of the right side of frequency-doubling crystal (11) and GRIN Lens (12) is close to, and the right side of GRIN Lens (12) and optical fiber contact pins (13) are pasted.
5, high-power blue-light fiber laser according to claim 1 is characterized in that, described second fiber device (33) comprising: second doubly clad optical fiber (14), optical fiber twine rod (15), optical fiber contact pins (16), double color plate (17); The left end of second doubly clad optical fiber (14) inserts in the middle optical fiber contact pins (13) of frequency multiplication device (32), second doubly clad optical fiber (14) is wrapped in optical fiber and twines on the rod (15), second doubly clad optical fiber (14) right-hand member inserts in the optical fiber contact pins (16), and optical fiber contact pins (16) is pasted with double color plate (17);
This double color plate (17) is high saturating, high anti-, saturating to the frequency doubled light wave height to fundamental light wave to the pump light of terminal pump arrangement (34).
6, high-power blue-light fiber laser according to claim 1, it is characterized in that described terminal pump arrangement (34) is made up of dichroic mirror (18), input coupled lens group (19), laser diode LD pumping source (20) and output collimating lens (21); The 45 ° of placements in dichroic mirror (18) inclination angle, input coupled lens group (19) is set thereafter, after the input coupled lens group (19) laser diode LD pumping source (20) is set, the three is in same collimated light path, dichroic mirror (18) tilt 45 ° of placements with blue light with direction output perpendicular to this light path, output collimating lens (21) is positioned at this vertical optical path and in the top of dichroic mirror (18);
This dichroic mirror (18) is high saturating to the pump light of laser diode LD pumping source (20), and is anti-to output frequency doubled light wave height; The fine output of this laser diode LD pumping source (20) magnetic tape trailer, the peak absorbtivity wavelength of wavelength and second doubly clad optical fiber (14) core material is complementary; This output collimating lens (21) is single non-globe lens or micro objective.
7, according to claim 3 or 5 described high-power blue-light fiber lasers, it is characterized in that, described first doubly clad optical fiber (7) and second doubly clad optical fiber (14), its fibre core (40) diameter is between the 27-33 micron, numerical aperture is between 0.04-0.08, multimode pumping inner cladding (41) diameter is between the 120-130 micron, and numerical aperture is between 0.38-0.45, and multimode pumping inner cladding cross-sectional profile is rectangle, hexagon or other polygonized structures.
8, high-power blue-light fiber laser according to claim 4, it is characterized in that, the frequency-doubling crystal (11) of described frequency multiplication device (32) is the non-linear crystal with matching angle and fundamental light wave appearance coupling, refer to KTP KTP, beta-barium borate BBO, or the periodic polarized lithium niobate PPLN of employing quasi-phase matching, periodic polarized KTP PPKTP crystal, this frequency-doubling crystal (11) left side is coated with laser diode LD pumping source (1) output laser high saturating, high saturating to fundamental frequency light, to the high anti-deielectric-coating of frequency doubled light, the right side is coated with the output laser to laser diode LD pumping source (20), the anti-reflection film of fundamental frequency light and frequency doubled light.
9,, it is characterized in that first, second optical fiber winding rod (8) of described first, second fiber device (31), (33), the radius of (15) are 35-39mm according to claim 3,5 described high-power blue-light fiber lasers.
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| CNB2006100430626A CN100372197C (en) | 2006-06-29 | 2006-06-29 | High-power blue-light fiber laser |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868350B (en) * | 2014-02-25 | 2018-03-30 | 福州高意通讯有限公司 | A kind of superpower laser |
| CN110584570A (en) * | 2019-10-12 | 2019-12-20 | 深圳大学 | Endoscopic photoacoustic imaging system for all-optical detection |
| CN111999795A (en) * | 2020-07-27 | 2020-11-27 | 武汉光谷航天三江激光产业技术研究院有限公司 | High-power gain optical fiber capable of simultaneously inhibiting mode instability and nonlinear effect and design method |
| CN114899687A (en) * | 2022-05-13 | 2022-08-12 | 山东大学 | Neodymium-doped all-fiber mode-locked laser based on nonlinear polarization rotation mode locking |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5805631A (en) * | 1994-09-08 | 1998-09-08 | The Regents Of The University Of California | Blue, green, orange, and red upconversion laser |
| US5621749A (en) * | 1995-09-06 | 1997-04-15 | Hewlett-Packard Company | Praseodymium-doped fluoride fiber upconversion laser for the generation of blue light |
| CN1186862C (en) * | 2003-04-25 | 2005-01-26 | 中国科学院上海光学精密机械研究所 | Double-clad optical fiber intracavity frequency-doubling laser |
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2006
- 2006-06-29 CN CNB2006100430626A patent/CN100372197C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868350B (en) * | 2014-02-25 | 2018-03-30 | 福州高意通讯有限公司 | A kind of superpower laser |
| CN110584570A (en) * | 2019-10-12 | 2019-12-20 | 深圳大学 | Endoscopic photoacoustic imaging system for all-optical detection |
| CN111999795A (en) * | 2020-07-27 | 2020-11-27 | 武汉光谷航天三江激光产业技术研究院有限公司 | High-power gain optical fiber capable of simultaneously inhibiting mode instability and nonlinear effect and design method |
| CN114899687A (en) * | 2022-05-13 | 2022-08-12 | 山东大学 | Neodymium-doped all-fiber mode-locked laser based on nonlinear polarization rotation mode locking |
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| CN100372197C (en) | 2008-02-27 |
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