CN218275506U - Hundred picoseconds high-energy 595nm dye laser - Google Patents
Hundred picoseconds high-energy 595nm dye laser Download PDFInfo
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- CN218275506U CN218275506U CN202220921874.0U CN202220921874U CN218275506U CN 218275506 U CN218275506 U CN 218275506U CN 202220921874 U CN202220921874 U CN 202220921874U CN 218275506 U CN218275506 U CN 218275506U
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Abstract
The utility model discloses a hundred picoseconds' high energy 595nm dye laser belongs to dye laser technical field, including the laser instrument body, the laser instrument body is including the pumping source that is used for producing the light source, the first optical assembly who is used for changing light output wave band, be used for to light expand the second optical assembly of a beam, collimation, be used for improving the enlarged subassembly of the accurate nature that light wave band enlargies. The utility model discloses a hundred burnt hectometre grades of 532nm laser as the pumping source, the solid dyestuff of doping PM597 in the pumping, PM597 solid dyestuff concentration and the setting of output mirror chamber membrane parameter through the control doping to realize hundred picoseconds burnt 595nm output of rank a little, this output is enlarged through the PM597 ethanol liquid dyestuff of xenon lamp pumping after the plastic, realizes hundred picoseconds burnt 595nm output of rank a hundred luxurious.
Description
Technical Field
The invention relates to the technical field of fuel lasers, in particular to a hundred picosecond high-energy 595nm dye laser.
Background
The laser, as the name implies is a device capable of emitting laser, and the optical field generally divides all lasers into five major categories according to the difference of the physical state of the working substance, which are respectively:
1. solid state lasers, which use as working substance crystals and glasses made by doping metal ions capable of generating stimulated radiation into a crystal or glass matrix to form luminescent centers;
2. gas lasers, the working substance used by them is gas, and further divided into atomic gas lasers, ion gas lasers, molecular gas lasers, quasi-molecular gas lasers, etc. according to the different nature of the working particles which really generate stimulated emission;
3. the working substance adopted by the laser mainly comprises two types, one type is organic fluorescent dye solution, and the other type is inorganic compound solution containing rare earth metal ions, wherein the metal ions play a role of working particles, and the inorganic compound liquid plays a role of matrix;
4. semiconductor lasers, which use a certain semiconductor material as a working substance to generate stimulated emission, and the principle is that through a certain excitation mode, such as electric injection, optical pumping or high-energy electron beam injection, the number of particles between energy bands of the semiconductor material or between the energy bands and impurity energy levels is reversed by exciting nonequilibrium carriers, so as to generate the stimulated emission of light;
5. the free electron laser is a special type of novel laser, the working substance is a directional free electron beam moving at high speed in a space period changing magnetic field, tunable coherent electromagnetic radiation can be generated by only changing the speed of the free electron beam, and the coherent radiation spectrum can be transited from an X-ray wave band to a microwave region in principle.
In the field of medical science and beauty, a medical laser is also frequently used, and in the medical laser, hundreds of picoseconds is a very important index of the pulse width of the buttocks.
The invention patent of patent application publication number CN112382918A discloses a dye laser, and belongs to the technical field of dyes. The dye laser comprises a light source, and a transmission optical fiber, a frequency doubling module, a reflector, a cylindrical gain medium body and an output mirror which are sequentially arranged along the output direction of the light source; the reflector and the output mirror are arranged at two ends of the cylindrical gain medium body, the reflector, the output mirror and the cylindrical gain medium body form a resonant cavity, and the output mirror outputs a stable laser beam. The invention has simple structure, high miniaturization degree and high light energy utilization rate.
However, in practical use, there still exist many disadvantages, for example, 595nm output of hundred picoseconds and hundred milli focal class cannot be realized, and for this reason, we propose a hundred picoseconds high-energy 595nm dye laser to solve the above problems.
Disclosure of Invention
In order to overcome the above defects in the prior art, the present invention provides a dye laser with large energy of 595nm in hundred picoseconds, which solves the problems proposed in the background art mentioned above by using a pump source for generating a light source, a first optical component for changing the light output waveband, a second optical component for expanding and collimating the light, and an amplifying component for improving the precision of light waveband amplification.
In order to achieve the purpose, the invention adopts the following technical scheme: a hundred picosecond high-energy 595nm dye laser comprises a laser body, wherein the laser body comprises a pumping source for generating a light source, a first optical assembly for changing a light output waveband, a second optical assembly for expanding and collimating light, and an amplifying assembly for improving the accuracy of light waveband amplification;
the light emitted by a pumping source is shaped by a first optical component, amplified by a second optical component and amplified by an amplifying component to realize the 595nm wave band output of hundred picoseconds hundred-milli-focal level of the light, and the 532nm laser with the pulse width of hundred picoseconds, the repetition frequency of 1-5Hz and the energy of hundred micro-focal level is realized by passive bonding crystal external cavity frequency doubling KTP of 808nm semiconductor laser pumping Nd, YAG, cr and YAG.
In a preferred embodiment, the first optical assembly comprises a collimating lens, a focusing lens, an input coupling mirror, a laser crystal, an output mirror, a first plano-convex mirror, a 1/2 glass slide (8), an isolator and a first 45-degree total reflection mirror, the collimating lens, the focusing lens, the input coupling mirror, the laser crystal, the output mirror, the first plano-convex mirror, the 1/2 glass slide, the isolator and the first 45-degree total reflection mirror are sequentially distributed along the direction of the pumping source emitting light, the laser crystal is positioned between the input coupling mirror and the output mirror and used for outputting the light at 595nm, and the light transmitted by the pumping source is refracted through the first 45-degree total reflection mirror and is emitted to the second optical assembly;
the 595nm wave band light output by the output mirror is collimated through the plano-convex mirror;
the isolator prevents the influence of the backward light on the whole structure;
and (3) performing coating operation on the first 45-degree total-reflection mirror, wherein HR @595nm of the coated second 45-degree total-reflection mirror.
In a preferred embodiment, the light emitted by the pump source passes through a collimating lens and a focusing lens in sequence, and the focusing lens is matched with the collimating lens to shape the light emitted by the pump source.
In a preferable embodiment, the input coupling mirror is coated, so that HR @595nm and AR @532nm in the coated input coupling mirror are obtained; plating the output mirror to make PR @595nm, R =50% @595nm, AR @550nm-590nm, AR @600nm-650nm in the coated output mirror;
the output of other wave bands of light in the light is inhibited through the output mirror.
In a preferred embodiment, the laser crystal is doped with a solid dye of PM597, such that 595nm output is achieved by light passing through the laser crystal;
the laser crystal adopts solid dye doped with PM597, so that the stability of light output in a 595nm wave band can be improved.
In a preferred embodiment, the second optical assembly comprises a second 45-degree full-reflecting mirror, a plano-concave mirror and a second plano-convex mirror, the second 45-degree full-reflecting mirror, the plano-concave mirror and the second plano-convex mirror are arranged in sequence, and the second 45-degree full-reflecting mirror is used for refracting the light rays of the first 45-degree full-reflecting mirror to the plano-concave mirror;
and receiving the light output by the second 45-degree total reflection lens through the plano-concave lens, and expanding the beam.
In a preferred embodiment, the planoconcave mirror is used for receiving the light transmitted by the second 45-degree total reflection mirror and outputting the light to the second planoconcave mirror, and expanding the light output by the second 45-degree total reflection mirror, and the second planoconcave mirror is used for receiving the light transmitted by the planoconcave mirror and outputting the light to the amplification assembly, so as to collimate the light output by the planoconcave mirror;
and (3) performing coating operation on the second 45-degree total-reflection mirror, wherein HR @595nm of the coated second 45-degree total-reflection mirror.
In a preferred embodiment, the amplifying assembly includes a xenon lamp, a liquid fuel for receiving the light emitted from the second optical assembly and outputting the light, and a maintaining member.
In a preferred embodiment, the liquid fuel is doped with PM597 ethanol liquid dye, and the light is amplified at 595nm by controlling the doping concentration and the temperature of the liquid dye;
accurate 595nm amplification is realized by controlling the temperature of the PM 597-doped ethanol liquid dye, the liquid dye is adopted for liquid fuel, and large energy output can be realized by amplifying by a larger multiple by making a large size.
In a preferred embodiment, the maintaining member is used for maintaining the correct absorbance of the dye in the dye solution reservoir and inhibiting the triplet effect in the liquid dye amplification process;
therefore, the precision of the amplification effect on the 595nm wave band light can be further improved.
Compared with the prior art, the invention has the beneficial effects that:
1. compared with the prior art, the integral structure designed by the invention adopts a 532nm laser with hundred micro-second level as a pumping source, the PM597 solid dye is doped in the pumping, the output of 595nm with hundred micro-second level is realized by controlling the concentration of the doped PM597 solid dye and the parameter setting of an output mirror cavity film, and the output is amplified by the PM597 ethanol liquid dye pumped by a xenon lamp after being shaped, so that the 595nm output with hundred micro-second level is realized.
2. The 595nm wave band is the optimum wavelength for treating vascular lesion by pulse dye laser, in the medical and American fields, the refrigerant is sprayed on the surface of skin several milliseconds before each laser pulse, only the epidermis is cooled, the epidermis is accurately protected during treatment, so that blood vessels are coagulated, the treatment is comfortable, and various vascular skin problems are easily broken.
Drawings
Fig. 1 is a schematic diagram of an overall structure of a hundred picosecond high-energy 595nm dye laser provided by the invention.
Fig. 2 is a schematic diagram of the light direction inside a hundred picosecond high-energy 595nm dye laser provided by the invention.
Fig. 3 is a schematic structural diagram of the first optical assembly according to the present invention, after removing the first 45 degree total reflection mirror and the second 45 degree total reflection mirror.
In the figure: 1. a pump source; 2. a collimating lens; 3. a focusing lens; 4. an input coupling mirror; 5. A laser crystal; 6. an output mirror; 7. a first plano-convex mirror; 8. 1/2 slide; 9. an isolator; 10. a first 45 degree fully reflective mirror; 11. a second 45 degree fully reflective mirror; 12. a plano-concave mirror; 13. a second plano-convex mirror; 14. a xenon lamp; 15. a liquid dye; 16. a retaining member.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
The hundred picosecond high-energy 595nm dye laser shown in the attached figures 1 to 3 comprises a laser body, wherein the laser body comprises a pumping source 1 for generating a light source, a first optical component for changing a light output waveband, a second optical component for expanding and collimating light, and an amplifying component for improving the amplification accuracy of the light waveband.
Specifically, the first optical assembly comprises a collimating lens 2, a focusing lens 3, an input coupling mirror 4, a laser crystal 5, an output mirror 6, a first plano-convex mirror 7, a 1/2 glass slide 8, an isolator 9 and a first 45-degree total reflection mirror 10, the collimating lens 2, the focusing lens 3, the input coupling mirror 4, the laser crystal 5, the output mirror 6, the first plano-convex mirror 7, the 1/2 glass slide 8, the isolator 9 and the first 45-degree total reflection mirror 10 are sequentially distributed along the direction of light emitted by the pumping source 1, the laser crystal 5 is located between the input coupling mirror 4 and the output mirror 6 and used for outputting light at 595nm, and the light transmitted by the pumping source 1 is refracted through the first 45-degree total reflection mirror 10 and emitted to the second optical assembly.
Further, the light emitted by the pump source 1 sequentially passes through the collimating lens 2 and the focusing lens 3, and the focusing lens 3 is matched with the collimating lens 2 to shape the light emitted by the pump source 1.
It should be noted that the input coupling mirror 4 is coated so that hr @595nm and ar @532nm are present in the coated input coupling mirror 4; the output mirror 6 is coated such that PR @595nm, R =50% @595nm, AR @550nm-590nm, and AR @600nm-650nm are present in the coated output mirror 6.
It is noteworthy that laser crystal 5 is doped with a solid dye of PM597, so that 595nm output is achieved by light passing through laser crystal 5.
Besides, the second optical assembly comprises a second 45-degree total reflection mirror 11, a plano-concave mirror 12 and a second plano-convex mirror 13, the second 45-degree total reflection mirror 11, the plano-concave mirror 12 and the second plano-convex mirror 13 are arranged and distributed in sequence, and the second 45-degree total reflection mirror 11 is used for refracting light rays of the first 45-degree total reflection mirror 10 to the plano-concave mirror 12.
It has to be said that the plano-concave mirror 12 is used for receiving the light transmitted by the second 45 degree total reflection mirror 11 and outputting the light to the second plano-convex mirror 13, expanding the light output by the second 45 degree total reflection mirror 11, and the second plano-convex mirror 13 is used for receiving the light transmitted by the plano-concave mirror 12 and outputting the light to the amplifying assembly for collimating the light output by the plano-concave mirror 12.
Further, the amplifying assembly includes a xenon lamp 14, a liquid fuel 15 and a holding member 16, and the liquid fuel 15 is used for receiving the light emitted from the second optical assembly and outputting the light outwards.
It has to be said that the liquid fuel 15 is doped with the PM597 ethanol liquid dye, and the light is amplified at 595nm by controlling the doping concentration and the temperature of the liquid dye.
On the other hand, the maintaining member 16 is used to maintain the correct absorbance of the dye in the dye solution reservoir, and to suppress the triplet effect during the liquid dye amplification process.
Example 2
As shown in fig. 1-3, a 532nm laser with hundred micro-focus and hundred picoseconds is used as a pumping source 1, light output by the pumping source 1 passes through a collimating lens 2, the light passing through the collimating lens 2 continues to pass through a focusing lens 3, the focusing lens 3 can be matched with the collimating lens 2 to integrate the light output by the pumping source 1, and thus the shaped light is output;
the output light in the focusing lens 3 passes through the input coupling mirror 4 and then is input into the laser crystal 5, the laser crystal 5 is doped with PM597 solid dye, the light emitted by the input coupling mirror 4 into the laser crystal 5 can be output in a 595nm wave band by controlling the concentration of dopants, and the PM597 doped in the laser crystal 5 adopts the solid dye, so that the stability of the light output in 595nm is improved;
the light in the laser crystal 5 is emitted to an output mirror 6, the output mirror 6 further controls the light in the integral structure through coating, the light is output in a 595nm waveband, the 595nm waveband light output by the output mirror 6 passes through a first plano-convex mirror 7, the first plano-convex mirror 7 collimates the 595nm output light, the collimated 595nm output light is transmitted to a 1/2 glass slide 8,1/2 glass slide 8 and adopts a 595nm 1/2 glass slide, the polarization direction of the 595nm light passing through the 1/2 glass slide 8 is controlled by controlling an optical axis, and meanwhile, the isolator 9 is combined, the polarization direction of the light passing through the 1/2 glass slide 8 and the isolator 9 is changed by the input polarization requirement of the isolator 9, so that the influence of reverse light on the integral structure is prevented;
the light rays passing through the isolator 9 are emitted to the first 45-degree total-reflection mirror 10, the first 45-degree total-reflection mirror 10 is subjected to coating treatment, the coating film HR @595nm is formed, the light rays emitted from the isolator 9 are refracted, the refraction angle is 90 degrees, the light rays are refracted to the second 45-degree total-reflection mirror 11, meanwhile, the second 45-degree total-reflection mirror 11 is subjected to coating treatment, the coating film HR @595nm is formed, the light rays refracted by the first 45-degree total-reflection mirror 10 are refracted, the refraction angle is 90 degrees, and then the second 45-degree total-reflection mirror 11 is emitted to the steel wire plano-concave mirror 12;
the plano-concave mirror 12 can expand the light rays emitted by the second 45-degree total reflection mirror 11 through the structure of the mirror itself, and emit the expanded light rays to the second plano-convex mirror 13, the second plano-convex mirror 13 collimates the light rays transmitted by the plano-concave mirror 12 through the structure of the second plano-convex mirror 13, and transmits the light rays transmitted by the plano-concave mirror 12 to the liquid fuel 15, and the light rays can be adjusted to the degree matched with the structure of the liquid fuel 15 through the mutual matching of the plano-concave mirror 12 and the second plano-convex mirror 13;
the light penetrates through the liquid fuel 15, the PM597 ethanol liquid dye is doped in the liquid fuel 15, the light emitted to the 595nm wave band of the liquid fuel 15 can be amplified, the light emitted to the liquid fuel 15 is in the 595nm wave band of hundreds of microjoules and hundreds of picoseconds, the light is amplified by the liquid fuel 15 after passing through the liquid fuel 15, the output is amplified to hundreds of millijoules and hundreds of picoseconds, the accurate amplification to the 595nm is realized by controlling the doping concentration and the temperature of the liquid dye, and the liquid fuel 15 is doped with the liquid dye, so that the size of the liquid fuel 15 can be enlarged, the function of amplifying by a larger factor is realized, and the large energy output is realized;
meanwhile, cyclooctatetraene in the maintaining component 16 maintains the correct absorbance of the dye in the dye solution reservoir, the triplet effect in the liquid dye amplification process is inhibited, accurate 595nm amplification is further ensured, and the xenon lamp 14 is a xenon lamp.
The related structures related to the embodiments 1-2 can all adopt the conventional structures in the field, and the matched hydraulic system, the solenoid valve and the pipeline can also be provided by manufacturers, besides, the related circuits, the electronic components and the modules in the invention are all the prior art, the technical personnel in the field can completely realize the related structures, and needless to say, the protection content of the invention also does not relate to the improvement of the internal structure and the method.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (9)
1. A hundred picoseconds high-energy 595nm dye laser is characterized in that: comprises a laser body including
A pump source (1) for generating a light source,
A first optical component for changing the light output waveband,
A second optical component for expanding and collimating the light,
The amplifying assembly is used for improving the amplifying accuracy of the light wave band.
2. The hundred picosecond high-energy 595nm dye laser of claim 1, wherein: the first optical component comprises a collimating lens (2), a focusing lens (3), an input coupling mirror (4), a laser crystal (5), an output mirror (6), a first plano-convex mirror (7), a 1/2 glass slide (8), an isolator (9) and a first 45-degree total reflection mirror (10), wherein the collimating lens (2), the focusing lens (3), the input coupling mirror (4), the laser crystal (5), the output mirror (6), the first plano-convex mirror (7), the 1/2 glass slide (8), the isolator (9) and the first 45-degree total reflection mirror (10) are sequentially distributed along the direction of light emitted by the pumping source (1), the laser crystal (5) is located between the input coupling mirror (4) and the output mirror (6) and used for outputting the light at 595nm, and the light transmitted by the pumping source (1) is refracted through the first 45-degree total reflection mirror (10) and is emitted to the second optical component.
3. The hundred picosecond high-energy 595nm dye laser of claim 2, wherein: the light emitted by the pumping source (1) sequentially passes through the collimating lens (2) and the focusing lens (3), and the focusing lens (3) is matched with the collimating lens (2) to shape the light emitted by the pumping source (1).
4. The hundred picosecond high-energy 595nm dye laser of claim 2, wherein: the input coupling mirror (4) is coated, so that HR @595nm and AR @532nm in the coated input coupling mirror (4) are achieved; and (2) plating the output mirror (6) to ensure that PR @595nm, R =50% @595nm, AR @550nm-590nm and AR @600nm-650nm are in the coated output mirror (6).
5. The hundred picosecond high-energy 595nm dye laser of claim 2, wherein: the laser crystal (5) is doped with PM597 solid dye, so that 595nm output is realized by light passing through the laser crystal (5).
6. The hundred picosecond high-energy 595nm dye laser of claim 1, wherein: the second optical assembly comprises a second 45-degree full-reflecting mirror (11), a plano-concave mirror (12) and a second plano-convex mirror (13), the second 45-degree full-reflecting mirror (11), the plano-concave mirror (12) and the second plano-convex mirror (13) are sequentially distributed, and the second 45-degree full-reflecting mirror (11) is used for refracting light of the first 45-degree full-reflecting mirror (10) to the plano-concave mirror (12).
7. The hundred picosecond high-energy 595nm dye laser of claim 6, wherein: the plano-concave mirror (12) is used for receiving light rays transmitted by the second 45-degree full-reflection mirror (11), outputting the light rays to the second plano-convex mirror (13), expanding the light rays output by the second 45-degree full-reflection mirror (11), and the second plano-convex mirror (13) is used for receiving the light rays transmitted by the plano-concave mirror (12), outputting the light rays to the amplifying assembly and collimating the light rays output by the plano-concave mirror (12).
8. The hundred picosecond high-energy 595nm dye laser of claim 1, wherein: the amplifying assembly comprises a xenon lamp (14), liquid fuel (15) and a maintaining member (16), and the liquid fuel (15) is used for receiving the light emitted by the second optical assembly and outputting the light outwards.
9. The hundred picosecond high-energy 595nm dye laser of claim 8, wherein: the maintaining component (16) is used for maintaining the correct light absorption rate of the dye in the dye solution reservoir and inhibiting the triplet state effect in the liquid dye amplifying process.
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| CN202220921874.0U CN218275506U (en) | 2022-04-20 | 2022-04-20 | Hundred picoseconds high-energy 595nm dye laser |
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