CN110518450B - Preparation method of light-induced condensing laser and light-induced condensing laser - Google Patents
Preparation method of light-induced condensing laser and light-induced condensing laser Download PDFInfo
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- CN110518450B CN110518450B CN201910735216.5A CN201910735216A CN110518450B CN 110518450 B CN110518450 B CN 110518450B CN 201910735216 A CN201910735216 A CN 201910735216A CN 110518450 B CN110518450 B CN 110518450B
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Abstract
The invention discloses a light-induced condensing laser and a preparation method thereof. The preparation method of the light-induced condensing laser comprises the following steps: (1) sequentially adding a gain material and a photoinitiator into a polymer monomer, and mixing to form a precursor solution; (2) cutting and focusing the ultraviolet laser through an optical slit to form a focused light spot with a required shape and size; (3) sealing the precursor solution in a light-transmitting container, carrying out ultraviolet light induced polymerization on a polymer monomer to form a solid polymer with high refractive index, and allowing a luminous functional group of the gain material to interact with the solid polymer to form an aggregation-state gain material with high optical gain; (4) under the pumping of the exciting light, the solid polymer is used as a micro resonant cavity which is used for providing high-efficiency optical feedback for the luminescence of the gathering-state gain material so as to realize the light-induced gathering laser. Compared with the traditional dye laser, the light-induced condensing laser has the advantages of high doping concentration, good light stability and high laser gain.
Description
Technical Field
The invention relates to the technical field of laser, in particular to a preparation method of a light-induced condensing laser and the light-induced condensing laser.
Background
In the technical field of laser, organic laser materials have the advantages of rich excited state energy levels, large absorption emission cross sections, flexibility, easiness in processing and the like, and have important application in the fields of laser sensing detection, photoelectron integration and the like. Traditional laser dyes (such as rhodamine 6G, rhodamine B, phthalocyanine and the like) are limited by the concentration quenching effect of luminophors, namely, the traditional laser dyes emit light well in a dilute solution, generate obvious luminescence quenching under slightly high doping concentration (such as 5 wt%) or a solid state, are difficult to further improve the optical gain of materials by improving the doping concentration, and seriously limit the development of the materials in the field of high-performance laser. The gathered laser is a laser type opposite to the traditional organic laser, and is characterized in that the gain material does not emit light in a dilute solution, the light emitting efficiency after gathering (in a concentrated solution or in a solid state) is obviously enhanced, and laser emission is formed under the excitation of pump light. The problem of luminescence quenching of the traditional dye laser can be effectively avoided by the gathered laser, and a new direction is provided for further improving the optical gain of the organic laser material. However, how to realize a non-contact, safe and rapid aggregation regulation and control means, and applying the aggregated laser to the fields of optical switches, tunable lasers and the like still is an urgent problem to be solved.
Disclosure of Invention
Therefore, a non-contact, safe and fast preparation method of the light-induced condensing laser and the light-induced condensing laser used in the fields of optical switches, tunable lasers and the like are needed to be provided.
A preparation method of a light-induced condensing laser comprises the following steps:
(1) after removing a polymerization inhibitor from a polymer monomer solution through alkaline washing and reduced pressure distillation, sequentially adding a gain material and a photoinitiator into the polymer monomer solution, and uniformly mixing to form a precursor solution;
(2) cutting and focusing the ultraviolet laser through an optical slit to form a focused light spot with a required shape and size;
(3) sealing the precursor solution in a light-transmitting container, irradiating the precursor solution by the focusing light spot, and polymerizing the polymer monomer under light induction to form a solid polymer with high refractive index, wherein the solid polymer and the focusing light spot keep the same shape and size; the luminescent functional group of the gain material in the precursor solution interacts with the solid polymer to form an aggregate-state gain material with high optical gain;
(4) under the pumping of the exciting light, the solid polymer is used as a micro resonant cavity which is used for providing high-efficiency optical feedback for the luminescence of the gathering-state gain material so as to realize the light-induced gathering laser.
In one embodiment, the gain material comprises an organic laser material having a donor-acceptor structure and/or aggregation-inducing luminescent molecules.
In one embodiment, the organic laser material with donor-acceptor structure comprises a laser material including one or more of p-phenylene vinylene derivative (CNDPASDB), azaanthracene derivative (CNDPA), benzodithiophene derivative, Perylene Diimide (PDI) derivative;
the aggregation-induced emission molecule comprises one or more of tetraphenylethylene and derivatives thereof, tetraphenylthiophene, 9, 10-diphenylvinyl anthracene and derivatives thereof, triphenylamine and derivatives thereof, boron-based aggregation-induced emission molecules and derivatives thereof, and silicon-based aggregation-induced emission molecules and derivatives thereof.
In one embodiment, the size of the solid polymer is determined by the focused light spot, the shape of the solid polymer is one or more of a circle, an ellipse and a regular polygon, and the size of the solid polymer ranges from 5 μm to 300 μm.
In one embodiment, the emission wavelength range of the light-induced condensing laser is 400nm-900 nm.
In one embodiment, the concentration of the gain material in the precursor solution ranges from 0.5 wt% to 50 wt%.
In one embodiment, the polymer monomer is one or more of methyl methacrylate, styrene, acrylate, vinyl bromide, cinnamate.
In one embodiment, the photoinitiator is one or more of azobisisobutyronitrile, bis (2, 4, 6-trimethylbenzoyl) phenylphosphine oxide, acylphosphorous oxide, benzoin and derivatives thereof.
In one embodiment, the photoinitiator is present in a concentration range of 1mg/mL to 20 mg/mL.
In one embodiment, the ultraviolet light is generated by a laser light source with the wavelength of 355nm, the photoinduced curing time is determined by the concentration of the photoinitiator, and the polymerization time ranges from 0.5h to 12 h.
In one embodiment, the light-transmitting container is one of a quartz microgroove, a square capillary, a cylindrical capillary, a bottle-shaped capillary, and a distributed bragg reflector.
The light-induced condensing laser is prepared by the preparation method of the light-induced condensing laser.
The aggregation laser prepared by the preparation method of the light-induced aggregation laser has good light stability, high doping concentration and high optical gain, and has potential application in the aspects of tunable laser and controllable optical switches. The gathered laser is a laser type opposite to the traditional organic laser, and is characterized in that the gain material does not emit light or emits light weakly in a dilute solution, the light emitting efficiency of the gathered gathering state gain material (concentrated solution or solid state) is improved rapidly, and laser emission is formed under the excitation of pump light. Light-induced regulation and control of the concentrated light is a non-contact, safe and rapid means for regulating and controlling the concentration, and has important application in the fields of optical switches and tunable light emission. The light-induced aggregation laser synergistically generates a high-gain aggregation-state gain material and a high-quality optical resonant cavity by means of light-induced regulation, and laser formed under the irradiation of pumping light is emitted, so that a high-performance laser with high doping concentration, low luminescence quenching effect and high optical gain can be realized.
The light-induced condensing laser controls the condensing process through light induction, and has the advantages of non-contact, low cost and high-efficiency control. The light-induced aggregation laser can realize high optical gain through ultrahigh-concentration doping (>22 wt%) of a luminous body, and the prepared light-induced aggregation laser has high photobleaching resistance, and the laser intensity is still kept over 80% within 4 hours (more than 30 ten thousand pump pulses) of continuous optical pumping. The light-induced laser gathering can effectively overcome the defects of the traditional organic dye laser and has potential application in the fields of tunable laser, controllable optical switches and the like.
Drawings
Fig. 1 is a schematic diagram of a method for manufacturing a light-induced condensing laser according to an embodiment of the present invention;
FIG. 2 is a graph showing the luminescence spectra of a gain material at different photoinduced curing times in accordance with an embodiment of the invention;
FIG. 3 is a graph of the luminous intensity of a gain material as a function of light-induced curing time in accordance with one embodiment of the present invention;
FIG. 4 is a quantum efficiency curve of a traditional dye rhodamine B and a gain material azabenzanthrone derivative (CNDPA) under different doping concentrations;
fig. 5 shows the laser intensity data of the gain material in continuous pumping 4h according to an embodiment of the present invention.
Description of the reference numerals
1: an induction laser; 2: a pump laser; 3: a mirror; 4: a light-splitting plain film 1; 5: a light-splitting plain film 2; 6: an objective lens; 7: a spectrometer; 8: a solid polymer; 9: a polymer monomer solution; 10: a light-transmissive container.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
An embodiment of the present invention provides a light-induced condensing laser, and a method for manufacturing the light-induced condensing laser includes the following steps:
referring to fig. 1, (1) after removing a polymerization inhibitor from a polymer monomer solution 9 by alkali washing and reduced pressure distillation, adding a gain material and a photoinitiator in sequence into the polymer monomer solution 9, and mixing to form a precursor solution, wherein the gain material does not emit light in the polymer monomer solution 9 due to the influence of environmental polarity or intramolecular benzene ring movement; the concentration range of the gain material in the precursor solution is 0.5 wt% -50 wt%. The gain material includes an organic molecule having a donor-acceptor (D-a) structure and/or an Aggregation Induced Emission (AIE) molecule.
(2) The precursor solution is sealed in a light-transmitting container 10, ultraviolet light 1 is focused to form light spots with controllable size and shape, and the light spots with the diameter range of 5-300 mu m can be intercepted by an optical slit and comprise circles, ellipses, squares, long strips and the like. The ultraviolet light 1 may be focused by a microscope, and the light spot transparent container 10 may be one of a quartz glass groove, a square capillary tube, a cylindrical capillary tube, a bottle-shaped capillary tube, and a distributed bragg reflector. The size of the light spot can be adjusted by the objective lens of different times of the microscope.
The precursor solution is irradiated by light spots under a microscope, polymer monomers in the precursor solution are induced and polymerized by ultraviolet light 1 to form a solid polymer 8 with controllable size and shape, and the refractive index of the solid polymer is higher than that of the polymer monomer solution 9, so that the formed polymer can be used as an optical resonant cavity with high-efficiency feedback; the luminescent functional group of the gain material in the precursor solution interacts with the solid polymer to form the aggregation-state gain material with high optical gain.
(3) Under the pumping of exciting light, the solid polymer with controllable size and shape is used as a micro resonant cavity which is used for providing high-efficiency optical feedback for the luminescence of the aggregation-state gain material to realize light-induced aggregation laser, and the emission wavelength range of the light-induced aggregation laser is 400nm-900 nm. The micro resonant cavity is a solid polymer formed by light-induced curing, and because the refractive index of the solid polymer is higher than that of a polymer monomer, light can be totally reflected at the interface of the solid polymer and the polymer monomer to form high-efficiency light feedback. The micro resonant cavity comprises a round, oval, square and strip resonant cavity, and the size range of the inner diameter of the micro resonant cavity is 5-300 mu m.
The light-induced aggregation laser is a laser type formed by an aggregation-state gain material and a high-quality optical resonant cavity which are used for generating high gain through light induction cooperation and irradiated by pumping light. In the preparation method, the gain material is dissolved in the polymer monomer solution 9, and the gain material does not emit light in the polymer monomer solution 9 due to the influence of environmental polarity or intramolecular benzene ring movement. Under the induction of ultraviolet light 1, polymer monomers in the solution are polymerized into solid polymers, and the refractive index is increased to form a high-quality optical resonant cavity through self-assembly. Meanwhile, the interaction between the functional group of the gain material and the solid polymer leads to the rapid increase of light emission, so that the high-gain aggregation-state gain material is formed, the solid polymer is used as a micro resonant cavity, and the micro resonant cavity is used for providing high-efficiency optical feedback for the light emission of the aggregation-state gain material, so that the light-induced aggregation laser is realized.
Further, organic molecules with donor-acceptor structures emit very weak light in the environment of strongly polar polymer monomers, the polarity of polymers generated by light-induced aggregation is low, and the luminous efficiency of the molecules is improved, wherein the organic molecules comprise one or more of p-phenylene ethylene derivatives such as cyano-substituted p-phenylene ethylene derivatives (CNDSB), 1, 4-bis (cyano-4-diphenylaminostyryl) -2, 5-diphenylbenzene (CNDPASDB), trans-1, 4-diphenylethylene benzene (DSB), cyano-substituted 2, 5-diphenyl-1, 4-diphenylethylene benzene (CNDPDSSB), 1, 4-bis [ 1-cyano-2- (4-diphenylamino) phenyl) vinyl ] benzene (TPCNDSB) and azaanthracene derivatives; aggregation-induced emission (AIE) molecules consume excited state energy due to free movement of benzene rings in the molecules, so that the molecules emit very weak light in a polymer monomer solution 4, after light-induced aggregation, the movement of the benzene rings in the light-emitting molecules in a solid polymer is limited, and the light emission is more efficient, and the AIE molecules comprise one or more of Tetraphenylethylene (TPE) and derivatives thereof, tetraphenylthiophene, 9, 10-diphenylvinyl anthracene (DSA) and derivatives thereof, triphenylamine, boron aggregation-induced emission molecules and derivatives thereof, and silicon aggregation-induced emission molecules and derivatives thereof.
Further, the polymer monomer is one or more of Methyl Methacrylate (MMA), styrene, acrylate, vinyl bromide and cinnamate.
The photoinitiator is one or more of Azodiisobutyronitrile (AIBN), bis (2, 4, 6-trimethylbenzoyl) phenylphosphine oxide (819), acylphosphorus oxide, benzoin and derivatives thereof. The concentration range of the photoinitiator is 1mg/mL-20 mg/mL.
Further, the ultraviolet light 1 is generated by a laser light source with the wavelength of 355nm, and the time range of the polymer monomer after the ultraviolet light 1 induction polymerization is 0.5h-12 h.
Example 1
The embodiment provides a green light emitting light-induced condensing laser, and a preparation method of the light-induced condensing laser comprises the following steps:
referring to FIG. 1, after washing the polymer monomer solution 9 methyl methacrylate solution (MMA, 99%, aladdin) with NaOH and distillation under reduced pressure, the polymerization inhibitor was removed to obtain a purified methyl methacrylate solution.
Sequentially adding a photoinitiator Azobisisobutyronitrile (AIBN) and a tetraphenylethylene derivative (TPE-BODIPY) into the purified methyl methacrylate solution to obtain a precursor solution with the mass fraction of 22 wt%, wherein the concentration of the photoinitiator azobisisobutyronitrile is 10 mg/mL. The gain material in the precursor solution hardly emits light due to the consumption of excited state energy by the free movement of benzene rings in the molecule in the solution.
Referring to fig. 1, the precursor solution is sealed in a light-transmissive container 10, and the entire light-transmissive container 10 is placed under an optical microscope. The 355nm ultraviolet light 1 is focused into a circular light spot with the size of about 100 mu m by a 10-time objective lens of an optical microscope, and the circular light spot irradiates the light-transmitting container 10.
Under the induction of the circular light spot, the polymer monomer methyl methacrylate in the irradiation range of the circular light spot is polymerized into solid polymer, namely solid methyl methacrylate, and the polymer monomer methyl methacrylate outside the light spot still keeps in a solution state. The refractive index of the formed solid polymer, namely the solid methyl methacrylate is 1.49, which is higher than that of the polymer monomer methyl methacrylate in the solution state by 1.41, so that the signal light can be subjected to total emission on the interface of the solid polymer, namely the solid methyl methacrylate and the polymer monomer methyl methacrylate in the solution state, and a whispering gallery mode resonant cavity is formed. The schematic diagram of the light-induced condensing laser preparation is shown in fig. 1.
The gain material tetraphenylethylene derivative (TPE-BODIPY) in the solid polymer PMMA is greatly limited in a solid environment due to the free movement of benzene rings in molecules, excited state energy is consumed by a radiation transition channel, light emission is increased rapidly, and the aggregation state gain material with high optical gain is formed. The luminescence curves of the tetraphenylethylene derivative (TPE-BODIPY) under different light-induced curing are shown in FIG. 2, and the corresponding luminescence intensity curve with curing time is shown in FIG. 3.
Under the pumping of nanosecond laser (480nm, 20Hz, 5ns), a solid polymer, namely solid methyl methacrylate, is used as a whispering gallery mode resonant cavity which is used for providing high-efficiency optical feedback for the light emission of the aggregation-state gain material, so that the light-induced aggregation laser with the light emission wavelength of 550nm is realized. The nanosecond laser was pumped for 4 hours and the laser intensity was retained at 80%, as shown in figure 5.
Example 2
The embodiment provides a near-infrared-emitting light-induced condensing laser, and a preparation method of the light-induced condensing laser comprises the following steps:
the gain material aza-benzanthrone derivative (CNDPA) is a molecule with a typical donor-acceptor structure, hardly emits light in a strong polar environment, and efficiently emits light in a low polar environment. Gain materials of aza-benzanthrone derivative and rhodamine B are doped into polystyrene to prepare film samples with different doping concentrations, and the quantum yield of the film samples with different doping concentrations is tested, and is shown in figure 4. The quantum yield of rhodamine B drops to about 1% at a doping concentration of 10 wt%. The doping concentration of the azabenzanthrone derivative reaches 100 wt%, and high-efficiency luminescence is still maintained, so that the azabenzanthrone derivative serving as the gain material has less concentration quenching effect, and the aim of high optical gain can be achieved through high doping.
After polymer monomer Styrene (Styrene, 99%, alddin) is washed by NaOH and distilled under reduced pressure, polymerization inhibitor is removed, and purified Styrene solution is obtained.
And sequentially adding a photoinitiator bis (2, 4, 6-trimethylbenzoyl) phenyl phosphine oxide (819) and a gain material azabenzanthrone derivative into the purified styrene solution to obtain a precursor solution with the mass fraction of 16 wt%, wherein the concentration of the photoinitiator bis (2, 4, 6-trimethylbenzoyl) phenyl phosphine oxide (819) in the precursor solution is 20 mg/mL. Due to the large polarity of the styrene solution, the gain material azabenzanthrone derivative hardly emits light in the styrene solution.
The precursor solution is sealed in a light-transmitting container 10, and the entire light-transmitting container 10 is placed under an optical microscope. The 355nm ultraviolet light 1 is intercepted by a square slit and focused into a square spot with the size of about 10 mu m multiplied by 10 mu m by a 20-time objective lens.
Under the induction of square light spots, styrene in the square light spot range is polymerized into solid polymer, namely solid polystyrene, by the polymer monomer in the precursor solution, and the styrene monomer outside the square light spot range still keeps a solution state. The refractive index of the formed solid polystyrene is 1.592, which is higher than the refractive index of the solution styrene, 1.547, so that the signal light can be totally emitted at the interface of the solid polystyrene and the solution styrene to form a whispering gallery mode resonator.
The solid polystyrene is in a weak polar environment, and the light emission of the gain material aza-benzanthrone derivative with a donor-acceptor structure is increased rapidly in the weak polar environment to form the aggregation-state gain material with high optical gain.
Under the pumping of femtosecond laser (500nm, 1kHz and 120fs), a solid polymer, namely solid polystyrene, is used as a square polymer microcavity, the square polymer microcavity is used for providing high-efficiency optical feedback for the luminescence of the aggregation-state gain material, and the near-infrared light induced aggregation laser with the luminescence wavelength of 740nm is realized.
Example 3
The embodiment provides a light-induced condensing laser of an optical switch, and a preparation method of the light-induced condensing laser comprises the following steps:
after washing polymer monomer methyl methacrylate solution (MMA, 99%, aladdin) with NaOH and reduced pressure distillation, the polymerization inhibitor was removed to obtain purified methyl methacrylate solution.
Sequentially adding a photoinitiator Azobisisobutyronitrile (AIBN) and a gain material photochromic compound (TPE-2DTE) into the purified methyl methacrylate solution to obtain a precursor solution with the mass fraction of 5 wt%, wherein the concentration of the photoinitiator Azobisisobutyronitrile (AIBN) in the precursor solution is 2 mg/mL. Due to the large polarity of the styrene solution, the gain material azabenzanthrone derivative hardly emits light in the styrene solution.
The gain material photochromic compound (TPE-2DTE) is a typical optical switch molecule with aggregation-induced luminescence, under 365nm illumination, dithienyl ethylene in the molecule generates a photoisomerization reaction, yellow-green fluorescence emission is converted into non-fluorescence emission, and meanwhile, the process can be recovered under the irradiation of long-wavelength 632nm laser, so that the fluorescence optical switch conversion can be realized.
The precursor solution is sealed in a light-transmitting container 10, and the whole light-transmitting container 10 is placed under an optical microscope.
The 355nm ultraviolet light 1 is cut by an elliptical slit and focused into an elliptical light spot with the size of about 100 mu m multiplied by 150 mu m by a 5-time objective lens of an optical microscope. The polymer monomer methyl methacrylate in the range of the oval light spot is polymerized into solid polymer, namely solid monomer methyl methacrylate, with the same size and structure as the oval light spot.
The gain material photochromic compound (TPE-2DTE) in the solid environment has good luminescence, under 365nm illumination, dithienylethylene in the molecule of the photochromic compound (TPE-2DTE) generates a photoisomerization reaction, yellow-green fluorescence emission is converted into non-fluorescence emission, and meanwhile, the process can be recovered under the irradiation of long-wavelength 632nm laser, so that the fluorescent light switch can be realized.
Under the pumping of nanosecond laser (460nm, 20Hz, 5ns), a solid polymer, namely a solid monomer methyl methacrylate, is used as a micro resonant cavity 3, and the micro resonant cavity 3 is used for providing high-efficiency optical feedback for the light emission of the aggregation-state gain material, so that the light-induced aggregation laser with the light emission wavelength of 530nm is realized. After 365nm laser irradiation for 5min, the laser disappears, and the gain material is converted into a non-fluorescent material. After 632nm laser irradiation for 15min, the aggregation gain material can obtain 530nm laser emission again, and reversible control of the laser optical switch is realized.
The aggregation laser prepared by the preparation method of the light-induced aggregation laser has good light stability, high doping concentration and high optical gain, and has potential application in the aspects of tunable laser and controllable optical switches. The gathered laser is a laser type opposite to organic laser, and is characterized in that a specific gain material does not emit light or emits light weakly in a dilute solution, the light emitting efficiency after gathering (in a concentrated solution or in a solid state) is improved sharply, and laser emission is formed under the excitation of pump light. Light-induced regulation and control of the concentrated light is a non-contact, safe and rapid means for regulating and controlling the concentration, and has important application in the fields of optical switches and tunable light emission. The light-induced aggregation laser synergistically generates a high-gain aggregation-state gain material and a high-quality optical resonant cavity by means of light-induced regulation, and laser formed under the irradiation of pumping light is emitted, so that a high-performance laser with high doping concentration, low luminescence quenching effect and high optical gain can be realized.
The light-induced condensing laser controls the condensing process through light induction, and has the advantages of non-contact, low cost and high-efficiency control. The light-induced aggregation laser can realize high optical gain through ultrahigh-concentration doping (>22 wt%) of a luminous body, and the prepared light-induced aggregation laser has high photobleaching resistance, and the laser intensity is still kept over 80% within 4 hours (more than 30 ten thousand pump pulses) of continuous optical pumping. The light-induced laser gathering can effectively overcome the defects of the traditional organic dye laser and has potential application in the fields of tunable laser, controllable optical switches and the like.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (12)
1. A preparation method of a light-induced condensing laser is characterized by comprising the following steps:
(1) after removing a polymerization inhibitor from a polymer monomer solution through alkaline washing and reduced pressure distillation, sequentially adding a gain material and a photoinitiator into the polymer monomer solution, and uniformly mixing to form a precursor solution;
(2) cutting and focusing the ultraviolet laser through an optical slit to form a focused light spot with a required shape and size;
(3) sealing the precursor solution in a light-transmitting container, irradiating the precursor solution by the focusing light spot, and polymerizing the polymer monomer under light induction to form a solid polymer with high refractive index, wherein the solid polymer and the focusing light spot keep the same shape and size; the luminescent functional group of the gain material in the precursor solution interacts with the solid polymer to form an aggregate-state gain material with high optical gain;
(4) under the pumping of the exciting light, the solid polymer is used as a micro resonant cavity which is used for providing high-efficiency optical feedback for the luminescence of the gathering-state gain material so as to realize the light-induced gathering laser.
2. The method of claim 1, wherein the gain material comprises an organic laser material having a donor-acceptor structure and/or a aggregation-inducing emission molecule.
3. The method of claim 2, wherein the organic laser material having donor-acceptor structure comprises one or more of p-phenylene vinylene derivatives, azaanthracene derivatives, benzodithiophene derivatives, perylene diimide derivatives;
the aggregation-induced emission molecule comprises one or more of tetraphenylethylene and derivatives thereof, tetraphenylthiophene, 9, 10-diphenylvinyl anthracene and derivatives thereof, triphenylamine and derivatives thereof, boron-based aggregation-induced emission molecules and derivatives thereof, and silicon-based aggregation-induced emission molecules and derivatives thereof.
4. The method as claimed in any one of claims 1 to 3, wherein the size of the solid polymer is determined by the focused light spot, the shape of the solid polymer is one or more of circular, elliptical and regular polygon, and the size of the solid polymer is in the range of 5 μm to 300 μm.
5. The method for preparing a light-induced condensing laser according to any one of claims 1 to 3, wherein the emission wavelength of the light-induced condensing laser is in the range of 400nm to 900 nm.
6. The method of any of claims 1-3, wherein the concentration of the gain material in the precursor solution is in the range of 0.5 wt% to 50 wt%.
7. The method according to any one of claims 1 to 3, wherein the polymer monomer is one or more of methyl methacrylate, styrene, acrylates, vinyl bromide, and cinnamate.
8. A method for producing a light induced condensing laser according to any of claims 1 to 3 characterized in that said photoinitiator is one or more of azobisisobutyronitrile, bis (2, 4, 6-trimethylbenzoyl) phenylphosphine oxide, acylphosphine oxide, benzoin and its derivatives.
9. The method of any one of claims 1 to 3, wherein the concentration of the photoinitiator is in the range of 1mg/mL to 20 mg/mL.
10. The method of any one of claims 1-3, wherein the photoinduced curing time is determined by the photoinitiator concentration, and the polymerization time is in the range of 0.5h to 12 h.
11. The method for preparing a light-induced condensing laser according to any one of claims 1 to 3, wherein the light-transmitting container is one of a quartz microgroove, a square capillary, a cylindrical capillary, a bottle-shaped capillary, and a distributed Bragg reflector.
12. A light-induced condensing laser manufactured by the method for manufacturing a light-induced condensing laser according to any one of claims 1 to 11.
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| CN101845239A (en) * | 2010-05-04 | 2010-09-29 | 哈尔滨工业大学 | Preparation method of modified polymer substrate solid dye laser medium |
| JP2013163767A (en) * | 2012-02-10 | 2013-08-22 | Kyoto Institute Of Technology | Fluorescent substance and its use |
| CN103311784A (en) * | 2013-06-17 | 2013-09-18 | 东南大学 | PDLC (polymer dispersed liquid crystal) optical fiber doped with dye and metal nanoparticles and optical fiber random laser |
| CN107221829A (en) * | 2017-06-13 | 2017-09-29 | 合肥工业大学 | The disordered polymer optical fiber random laser device adulterated based on nano particle |
| CN109749326A (en) * | 2018-12-28 | 2019-05-14 | 南昌大学 | A kind of preparation method of the four methyl esters fluorescent microsphere of quaterphenyl hexenoic acid based on aggregation-induced emission |
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2019
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845239A (en) * | 2010-05-04 | 2010-09-29 | 哈尔滨工业大学 | Preparation method of modified polymer substrate solid dye laser medium |
| JP2013163767A (en) * | 2012-02-10 | 2013-08-22 | Kyoto Institute Of Technology | Fluorescent substance and its use |
| CN103311784A (en) * | 2013-06-17 | 2013-09-18 | 东南大学 | PDLC (polymer dispersed liquid crystal) optical fiber doped with dye and metal nanoparticles and optical fiber random laser |
| CN107221829A (en) * | 2017-06-13 | 2017-09-29 | 合肥工业大学 | The disordered polymer optical fiber random laser device adulterated based on nano particle |
| CN109749326A (en) * | 2018-12-28 | 2019-05-14 | 南昌大学 | A kind of preparation method of the four methyl esters fluorescent microsphere of quaterphenyl hexenoic acid based on aggregation-induced emission |
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