CN111900620A - Wavelength-adjustable elastic organic laser and preparation method thereof - Google Patents
Wavelength-adjustable elastic organic laser and preparation method thereof Download PDFInfo
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- CN111900620A CN111900620A CN202010727568.9A CN202010727568A CN111900620A CN 111900620 A CN111900620 A CN 111900620A CN 202010727568 A CN202010727568 A CN 202010727568A CN 111900620 A CN111900620 A CN 111900620A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/12—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers
- H01S5/1231—Grating growth or overgrowth details
Abstract
The invention discloses an elastic organic laser with adjustable wavelength and a manufacturing method thereof, wherein the laser structure is as follows: organic gain layer/elastomeric grating substrate. The organic gain layer is a micromolecule, star-shaped macromolecule, linear macromolecule material or binary compound of the materials, and the elastic grating substrate is a transparent elastomer with a nano-scale periodic structure prepared by a transfer printing method. The manufacturing method comprises the steps of obtaining a high-elasticity grating substrate by using a periodic structure of a polymethyl siloxane PDMS transfer printing template, and coating the organic gain layer on the surface of the grating in a spin coating mode. The elastic organic laser with the adjustable wavelength, which is prepared by the method, has excellent comprehensive performance, and is particularly characterized by good stretchability, good compatibility, large adjustable range, simple preparation method, low cost and the like.
Description
Technical Field
The invention belongs to the technical field of laser, and particularly relates to an elastic organic laser with adjustable wavelength and a preparation method thereof.
Background
The organic laser material has the advantages of rich variety and wide source, unique mechanical flexibility, good compatibility, suitability for solution processing and the like compared with inorganic materials. In terms of light emission characteristics, organic materials generally have a broad emission spectrum and are easy to tune, and are particularly suitable for constructing wavelength tunable lasers. Organic distributed feedback lasers have a number of excellent characteristics such as directional output, easy adjustment of emission to cover the entire visible spectral range, low operating threshold, high reflectivity, and simple manufacturing process.
In the fabrication of organic distributed feedback resonators, one of the methods is electron beam lithography, which is one of the most accurate and versatile methods for preparing nanopatterns, but this method is very time consuming and requires high vacuum and advanced electronics. In addition, there are laser interference technology and nano hot stamping technology, but many problems such as expensive manufacturing cost, harsh process conditions and uncontrollable yield limit the development and application of the broadband tunable organic laser to some extent, so it is necessary to develop a preparation method with simple process, low cost, low temperature processing, high precision and good material compatibility. The micro-nano structure transfer printing technology is a new technology which is started in recent years, pattern transfer from a template to a substrate can be realized by utilizing simple solution curing treatment, and a new visual angle is opened for optimizing the production process of the distributed feedback resonator by the extremely simple preparation flow.
Disclosure of Invention
The purpose of the invention is as follows: the existing distributed feedback resonant cavity is complex in preparation process, high in manufacturing cost and high in defect rate, and in order to overcome the problems and better meet the development of a wavelength-tunable laser in the future, the invention provides the wavelength-tunable elastic laser with excellent comprehensive performance and the preparation method thereof. The elastic laser has the advantages of high precision, low defect rate, simple process, low cost and the like, and has excellent laser performance and high stretchability.
The technical scheme is as follows: in order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides an elastic organic laser with adjustable wavelength, which consists of an organic gain layer and an elastic distributed feedback grating substrate.
The organic gain layer is deposited on the top of the elastic distributed feedback grating substrate, and the elastic distributed feedback grating substrate is characterized in that: transparent elastomer with nano-scale periodic structure on the surface. Preferably, the size of the nanoscale periodic structure is 280nm-360 nm.
The organic gain medium layer is made of organic laser materials: small molecules, star-shaped macromolecules, linear macromolecular materials or binary composites of these materials. Preferably, the elastic distributed feedback grating substrate is prepared by using a periodic nanostructure of a liquid polymethylsiloxane PDMS transfer template.
Meanwhile, the invention provides a manufacturing method of the elastic organic laser with adjustable wavelength, which comprises the following steps:
a. mixing solution-state polymethylsiloxane PDMS and a curing agent, stirring at room temperature to uniformly mix the polymethylsiloxane PDMS and the curing agent, and then standing to discharge bubbles in the mixed solution;
b. carefully coating the mixed solution on the surface of the template, and then carrying out vacuum pumping treatment to completely discharge bubbles on the surface of the template;
c. b, performing heat curing treatment on the processed device in the step b;
d. cooling to room temperature, then carefully peeling off the cured PDMS film on the surface of the template to obtain a transparent elastic grating and transferring the transparent elastic grating onto a glass substrate;
e. and d, depositing an organic gain layer on the transparent elastic grating processed in the step d, wherein the thickness of the organic gain layer is 100-200 nm.
The deposition mode of the organic gain layer is one of spin coating, ink-jet printing or vacuum evaporation.
Has the advantages that: compared with the prior art, the elastic organic laser with adjustable wavelength and the preparation method thereof provided by the invention have the following advantages: the invention adopts the liquid PDMS to transfer the nano-scale periodic structure, can overcome the defects of complex process and high-temperature treatment of the traditional preparation technology and has the advantage of high precision, thereby being beneficial to obtaining the elastic laser with excellent comprehensive performance. By combining different periods of the template and the organic gain material, a height tunability of about 150nm in the visible spectral range can be achieved. The elastic grating prepared from the PDMS material has high transparency meeting optical requirements and excellent stretchability. In addition, the solution processing and spin coating process saves materials and is low in cost, and meanwhile, the transfer printing method for preparing the distributed feedback grating can achieve high precision and low defect rate and has good compatibility with organic materials. In a word, the elastic laser has excellent comprehensive performance, and is particularly suitable for the application of future flexible, tunable, low-cost and portable photoelectric devices.
Drawings
Fig. 1 is a schematic diagram of an elastic organic laser structure.
FIG. 2 is a wavelength-tuned laser spectrum of the elasto-organic laser of example 1.
FIG. 3 is a wavelength-tuned laser spectrum of the elasto-organic laser of example 2.
FIG. 4 is a wavelength-tuned laser spectrum of the elasto-organic laser of example 3.
Fig. 5 is a schematic view of the molecular structure of the organic gain medium T-m used in example 1.
Fig. 6 is a schematic view of the molecular structure of the organic gain medium SpL (2) -1 used in example 2.
Detailed Description
The invention is further described with reference to the following figures and examples.
Examples
The present invention will be better understood from the following examples. However, those skilled in the art will readily appreciate that the specific material ratios, process conditions and results thereof described in the examples are illustrative only and should not be taken as limiting the invention as detailed in the claims.
The invention relates to a wavelength-adjustable elastic organic laser which consists of an elastic distributed feedback grating and an organic light-emitting gain medium layer; the elastic distributed feedback grating is as follows: PDMS elastomer with nano-scale periodic structure on the surface. The organic gain medium layer is made of organic laser materials: small molecules, star-shaped macromolecules, linear macromolecular materials or binary composites of these materials.
The invention provides an elastic organic laser with adjustable wavelength and a preparation method thereof, wherein the method comprises the following steps:
a. mixing PDMS and a curing agent in a solution state according to a volume ratio of 10:1, stirring for 30 minutes at room temperature to uniformly mix the PDMS and the curing agent, and standing for 30 minutes to discharge bubbles in the mixed solution;
b. carefully coating the mixed solution on the surface of the master plate, and vacuumizing the device to completely discharge bubbles on the surface of the template;
c. b, performing heat curing treatment on the treated device in the step b, and annealing for 2 hours at the temperature of 80 ℃;
d. after the annealing treatment is finished, cooling to room temperature, then carefully uncovering the PDMS film solidified on the surface of the template to obtain an elastic distributed feedback grating and transferring the elastic distributed feedback grating onto a glass substrate;
e. and (e) preparing an organic gain medium solution, and spin-coating the elastic distributed feedback grating processed in the step (d) to obtain an organic gain medium layer, wherein the thickness of the organic gain medium layer is controlled to be about 100-200 nm.
The elastic distributed feedback grating is as follows: high-transparency elastomer with nano-scale periodic structure on the surface.
The organic gain medium layer is made of organic laser materials: pi-conjugated small organic molecules or polymers, such as poly [ (9, 9-di-n-octylfluorenyl-2, 7-diyl) -alt- (benzo [2,1,3] thiadiazole-4, 8-diyl) ] (F8BT), or mixtures thereof.
The preferred thickness of the gain medium is 150 nm. The film thickness is usually over 100nm to be able to confine light in the gain layer to form effective feedback, and the thickness in the embodiment is 150 nm.
The purchased products for preparing the elastic grating are: dow Corning SYLGARD184silicone rubber is a two-component kit product consisting of liquid components, and comprises 1kg of basic components and 100g of curing agent. The name of the curing agent is called: SYLGARD184Silicone Elastomer Curing Agent (Chinese translation for SYLGARD184Silicone Curing Agent).
The gain medium is deposited in one of spin coating, ink jet printing or vacuum evaporation.
The present invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
Example 1
Preparing a blue-light tunable elastic organic laser: the transfer printing method for preparing the elastic distributed feedback grating with the period of 280nm comprises the following specific steps: a. mixing PDMS and a curing agent in a solution state according to a volume ratio of 10:1, stirring for 30 minutes at room temperature to uniformly mix the PDMS and the curing agent, and standing for 30 minutes to discharge bubbles in the mixed solution; b. carefully coating the mixed solution on the surface of a mother plate with the period of 280nm, and vacuumizing a device to completely discharge bubbles on the surface of the template; c. c, carrying out thermal annealing and curing treatment on the treated device in the step b, and annealing for 2 hours at the temperature of 80 ℃; d. and after the annealing treatment is finished, cooling to room temperature, and then carefully peeling off the cured PDMS film on the surface of the template to obtain the elastic distributed feedback grating and transferring the elastic distributed feedback grating onto a glass substrate.
Selecting a T-m gain material, taking methylbenzene as a solvent, preparing a solution with the concentration of 20mg/mL, carrying out spin-coating at the rotating speed of 2000rpm for 60s and at the acceleration of 2000rpm/s, and preparing a film with the thickness of 150 nm.
T-m belongs to star-shaped macromolecules, is a research result in the early stage of the research group of the department, is a synthetic material, has a molecular structural formula shown in figure 5, the periphery of a triazine nucleus is substituted by carbazole, fluorenyl is connected to-2 and 7 positions of the carbazole, and the molecular description is as follows: 9,9' - (6- (2,7-bis (9, 9-dihexyl-9H-fluoro-2-yl) -9H-carbazol-9-yl) -1,3,5-triazine-2,4-diyl) bis (9H-carbazole) (T-m).
The prepared elastic laser device was subjected to laser testing, and fig. 2 shows the laser wavelength tuning capability of the elastic laser device, achieving laser wavelength tuning in the range from 426nm to 436 nm.
Example 2
Preparing a green light tunable elastic organic laser: the transfer printing method for preparing the elastic distributed feedback grating with the period of 320nm comprises the following specific steps: a. mixing PDMS and a curing agent in a solution state according to a volume ratio of 10:1, stirring for 30 minutes at room temperature to uniformly mix the PDMS and the curing agent, and standing for 30 minutes to discharge bubbles in the mixed solution; b. carefully coating the mixed solution on the surface of a mother plate with the period of 320nm, and vacuumizing the device to completely discharge bubbles on the surface of the template; c. c, carrying out thermal annealing and curing treatment on the treated device in the step b, and annealing for 2 hours at the temperature of 80 ℃; d. and after the annealing treatment is finished, cooling to room temperature, and then carefully peeling off the cured PDMS film on the surface of the template to obtain the elastic distributed feedback grating and transferring the elastic distributed feedback grating onto a glass substrate. SpL (2) -1 gain material is selected, toluene is used as solvent, the concentration of the prepared solution is 20mg/mL, the spin-coating rotating speed is 2000rpm, the spin-coating time is 60s, the spin-coating acceleration is 2000rpm/s, and the thickness of the prepared film is 150 nm.
The SpL (2) -1 gain material is also a previous research result of the scientific research group, and the structural formula of the SpL (2) -1 gain material is shown in figure 6.
The prepared elastic laser device was subjected to laser testing, and fig. 3 shows the laser wavelength tuning capability of the elastic laser device, which achieved laser wavelength tuning in the range from 476nm to 486 nm.
Example 3
Preparing a yellow-light tunable elastic organic laser: the transfer printing method for preparing the elastic distributed feedback grating with the period of 360nm comprises the following specific steps: a. mixing PDMS and a curing agent in a solution state according to a volume ratio of 10:1, stirring for 30 minutes at room temperature to uniformly mix the PDMS and the curing agent, and standing for 30 minutes to discharge bubbles in the mixed solution; b. carefully coating the mixed solution on the surface of a mother plate with the period of 360nm, and vacuumizing the device to completely discharge bubbles on the surface of the template; c. c, carrying out thermal annealing and curing treatment on the treated device in the step b, and annealing for 2 hours at the temperature of 80 ℃; d. and after the annealing treatment is finished, cooling to room temperature, and then carefully peeling off the cured PDMS film on the surface of the template to obtain the elastic distributed feedback grating and transferring the elastic distributed feedback grating onto a glass substrate. A poly [ (9, 9-di-n-octylfluorenyl-2, 7-diyl) -alt- (benzo [2,1,3] thiadiazole-4, 8-diyl) ] (F8BT) gain material was selected, toluene was used as a solvent, the concentration of a prepared solution was 20mg/mL, the spin-coating rotation speed was 2000rpm, the spin-coating time was 60s, the spin-coating acceleration was 2000rpm/s, and the thickness of a prepared film was 150 nm.
The prepared elastic laser device was subjected to laser test, and fig. 4 shows the laser wavelength tuning capability of the elastic laser device, which realizes laser wavelength tuning in the range from 574nm to 586 nm.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (10)
1. The elastic organic laser with the adjustable wavelength is characterized by comprising an organic gain layer and an elastic distributed feedback grating substrate, wherein the organic gain layer is deposited on the top of the elastic distributed feedback grating substrate, and the elastic distributed feedback grating substrate is a transparent elastomer with a nano-scale periodic structure prepared by a transfer printing method.
2. A wavelength tunable elastic organic laser according to claim 1, wherein the size of said nanoscale periodic structure is 280nm-360 nm.
3. A wavelength tunable elastic organic laser according to claim 1, wherein said organic gain layer is a binary composite of one or two of small molecule, star-shaped macromolecule and linear macromolecule materials.
4. The elastic organic laser with tunable wavelength of claim 1, wherein the elastic distributed feedback grating substrate is prepared by using periodic nanostructures of a liquid-state polymethylsiloxane PDMS transfer template.
5. A method of manufacturing a wavelength tunable elastic organic laser according to claim 1, comprising the steps of:
a. mixing liquid polymethylsiloxane PDMS with a curing agent, stirring and mixing uniformly at room temperature to obtain a mixed solution, and standing;
b. coating the mixed solution on the surface of a template, and vacuumizing;
c. b, performing heat curing treatment on the processed device in the step b;
d. cooling to room temperature, removing the PDMS film solidified on the surface of the template to obtain a transparent elastic grating and transferring the transparent elastic grating onto a glass substrate;
e. and d, depositing an organic gain layer on the transparent elastic grating processed in the step d.
6. The method as claimed in claim 5, wherein the organic gain layer is formed by spin coating, ink-jet printing or vacuum evaporation.
7. The method according to claim 5, wherein the organic gain layer has a thickness of 100 to 200 nm.
8. The method according to claim 5, wherein the curing agent is a silicone rubber curing agent.
9. The method of claim 5, wherein the volume ratio of the liquid PDMS to the curing agent is 10: 1.
10. The method of claim 5, wherein the organic gain layer is prepared by: and (2) preparing a 20mg/mL gain material solution by taking toluene as a solvent, wherein the spin-coating rotation speed is 2000rpm, the spin-coating time is 60s, the spin-coating acceleration is 2000rpm/s, and the thickness of the prepared film is 100-200 nm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113437641A (en) * | 2021-06-23 | 2021-09-24 | 南京邮电大学 | Organic laser device and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882780A (en) * | 2015-06-10 | 2015-09-02 | 北京工业大学 | Preparation method of thin-film type organic polymer laser |
| CN107783215A (en) * | 2017-10-20 | 2018-03-09 | 浙江工业大学 | A kind of preparation method of PDMS material flexibility varied angle slot array diffraction optical device |
| CN108376901A (en) * | 2018-01-31 | 2018-08-07 | 北京理工大学 | Colloidal Quantum Dots continuous wave laser and preparation method thereof |
| CN108390247A (en) * | 2018-01-31 | 2018-08-10 | 北京理工大学 | The perovskite quantum dot continuous wave laser of LED pumpings |
| CN108808448A (en) * | 2018-06-12 | 2018-11-13 | 南京邮电大学 | A kind of organic laser thin-film device and preparation method thereof |
| CN110061154A (en) * | 2019-04-26 | 2019-07-26 | 吉林大学 | There is the method and application of the ultra-thin clad metal electrode of micro-nano optical grating construction using hot nano impression preparation |
-
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- 2020-07-22 CN CN202010727568.9A patent/CN111900620A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882780A (en) * | 2015-06-10 | 2015-09-02 | 北京工业大学 | Preparation method of thin-film type organic polymer laser |
| CN107783215A (en) * | 2017-10-20 | 2018-03-09 | 浙江工业大学 | A kind of preparation method of PDMS material flexibility varied angle slot array diffraction optical device |
| CN108376901A (en) * | 2018-01-31 | 2018-08-07 | 北京理工大学 | Colloidal Quantum Dots continuous wave laser and preparation method thereof |
| CN108390247A (en) * | 2018-01-31 | 2018-08-10 | 北京理工大学 | The perovskite quantum dot continuous wave laser of LED pumpings |
| CN108808448A (en) * | 2018-06-12 | 2018-11-13 | 南京邮电大学 | A kind of organic laser thin-film device and preparation method thereof |
| CN110061154A (en) * | 2019-04-26 | 2019-07-26 | 吉林大学 | There is the method and application of the ultra-thin clad metal electrode of micro-nano optical grating construction using hot nano impression preparation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113437641A (en) * | 2021-06-23 | 2021-09-24 | 南京邮电大学 | Organic laser device and preparation method thereof |
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Application publication date: 20201106 |