CN106299989B - Single-mode laser element, preparation method and its application based on bottle microcavity - Google Patents
Single-mode laser element, preparation method and its application based on bottle microcavity Download PDFInfo
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- CN106299989B CN106299989B CN201610875572.3A CN201610875572A CN106299989B CN 106299989 B CN106299989 B CN 106299989B CN 201610875572 A CN201610875572 A CN 201610875572A CN 106299989 B CN106299989 B CN 106299989B
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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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/08018—Mode suppression
- H01S3/08022—Longitudinal modes
- H01S3/08031—Single-mode emission
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Abstract
The present invention provides a kind of single-mode laser element based on bottle microcavity, the preparation method of the single-mode laser element and the applications of the single-mode laser element.Single-mode laser element provided by the invention based on bottle microcavity, has the feature that, comprising: micro-nano fiber, tip diameter range is at 0.5~5 micron；Optical microcavity is in ellipsoid, is set on micro-nano fiber, and diameter is 3~7 microns, wherein the ingredient of optical microcavity is resin solution, and the component of resin solution includes laser gain material, organic solvent, low viscosity resin and curing agent.The single-mode laser element can pass through the interference hot spot of regulation exciting light, efficiently realize that single-mode laser exports in polymer bottles microcavity, and microcavity is excited using interference light, change the fringe spacing of interference hot spot, it is allowed to match with the dimensional energy distribution of the optical mode of the tunable laser element, the output of single-mode laser is realized in optical microcavity.
Description
Technical field
The present invention relates to a kind of micronano optical devices, and in particular to a kind of single-mode laser element based on bottle microcavity, the list
The application of the preparation method of mould laser diode and the single-mode laser element.
Background technique
Echo wall mode optical micro-cavity has stable high Q resonance mode, lesser mode volume, low laser threshold, ruler
It is very little it is small, prepare the advantages that facilitating, it is many in micro-nano photonic device, nonlinear optics, quantum optices, quantum information processor etc.
It is studied in field.
With the development of modern micro-nano technology technology and the progress of material preparation means, Whispering-gallery-mode research by by
Microwave regime is gradually extended to, nearest research interest concentrates on the Whispering-gallery-mode in light wave, and Whispering-gallery-mode is
It is realized in the microcavity of various different materials, including various glass, polymer, the materials such as crystal and semiconductor, and the shape of chamber
And it is varied, such as annular, spherical shape, dish type, cylindricality etc..It has been carried out in the world at present and prepares dish type time on a silicon substrate
Sound wall mode optical micro-cavity is coupled with micro-nano fiber, the light source or image intensifer as optics integration module.
Echo wall mode optical micro-cavity such as spherical shape, disk shaped optical microcavity, the aggregation of most of zlasing mode that they are generated
In microcavity body Chi Daochu, it is difficult to select zlasing mode, so the optical microcavity of preparation is usually multi-mode laser output, i.e.,
Just single-mode laser output can be obtained, prepared optical microcavity size is smaller, and laser threshold is too big, this is spherical, disc of light
Learn a big disadvantage of microcavity；In addition, the single-mode output in order to realize cavity, the Compound Cavity that researcher also makes specific structure is used
Model selection (such as: 8 font microcavitys are made in optical ring microcavity) is carried out in matching former cavity, is swashed although being able to achieve cavity in this way
The single-mode output of light, but cavity body structure becomes complicated, preparation not easy to be processed, higher cost.
Summary of the invention
The present invention is to carry out to solve the above-mentioned problems, and it is an object of the present invention to provide a kind of single mode based on bottle microcavity swashs
The application of optical element, the preparation method of the single-mode laser element and the single-mode laser element.
The present invention provides a kind of single-mode laser elements based on bottle microcavity, have the feature that, comprising: micro-nano light
Fibre, tip diameter range is at 0.5~5 micron；Optical microcavity is in bottle shape, is set on micro-nano fiber, and diameter is 2.5~50
Micron, wherein the ingredient of optical microcavity is resin solution, and the component of resin solution includes laser gain material, organic solvent, low
Viscosity resin and curing agent.
In the single-mode laser element provided by the invention based on bottle microcavity, it can also have the following features: wherein,
Laser gain material is perovskite nano particle, quantum dot, cyanine type dye, piperazine class dyestuff, any one in Coumarins dyestuff
Kind.
The present invention also provides a kind of preparation methods of single-mode laser element based on bottle microcavity, have such spy
Sign, comprising the following steps: optical fiber probe is immersed in the resin solution that modulates and quickly extracted out by step 1；Step 2, in light
Learning makes optical fiber probe and micro-nano fiber Rapid contact under microscope, resin solution is adhered on micro-nano fiber, micro-nano fiber thing
It is first hanging to place on the glass substrate；The micro-nano fiber for being stained with resin solution is put into high temperature furnace and is heated to 60 DEG C by step 3,
And constant temperature maintains 8~12 hours, the single-mode laser element based on bottle microcavity is formed after resin solution curing, wherein resin
Solution is modulated according to above-mentioned proportion, and the tip diameter range of optical fiber probe is at 0.5~5 micron.
In preparation method provided by the invention, it can also have the following features: wherein, in step 1, modulation
Steps are as follows for resin solution: in organic solvent by laser gain material dissolution, adding low viscosity resin and curing agent mixing
Uniformly.
The present invention also provides a kind of applications of single-mode laser element, have a feature in that step 1, use focus lamp
To two beam parallel light focusings, interference hot spot is obtained；Step 2 will interfere hot spot pumping mono-mode laser diode；Step 3 changes dry
The fringe spacing for relating to hot spot is allowed to match with the dimensional energy distribution of the optical mode of single-mode laser element, can be in optics
The output of single-mode laser is realized in microcavity.
The action and effect of invention
Related single-mode laser element, preparation method and its application according to the present invention, because having optical microcavity,
And the ingredient of the optical microcavity be resin solution, the component of resin solution include laser dye, organic solvent, low viscosity resin and
Curing agent, so, single-mode laser element of the invention is using low viscosity resin solution to the adhesiveness and resin of micro-nano fiber
The characteristics of solution stress polycondensation forms, is polycondensed into various sizes of class ellipsoid echo wall mode optical micro-cavity on micro-nano fiber,
And pulse energy be receive burnt magnitude pumping under stablize output laser.Single-mode laser element of the invention has preparation simply,
Miniaturization, stable structure is cheap, the extremely low advantage of laser threshold.In addition, the preparation side of single-mode laser element of the invention
Method is simple, transreplication, the volume production of single-mode laser element easy to accomplish.Single-mode laser element maximum feature of the invention is can to pass through
Interference interval and the interference position for changing interference hot spot, efficiently realize the single-mode output of laser.
Detailed description of the invention
Fig. 1 is the schematic diagram that single-mode laser element is prepared in the embodiment of the present invention；
Fig. 2 is the interference hot spot after two beam directional light line focuses；
Fig. 3 (a) is optical microphotograph of the optical microcavity of single-mode laser element in the embodiment of the present invention under 100 times of object lens
Mirror imaging, 4.27 μm of micro- cavity diameter；Fig. 3 (b) is the single-mode laser element pumped in Fig. 3 (a) with non-interfering uniform light spots
Optical microscopy image obtained from optical microcavity；Fig. 3 (c) is the single-mode laser that Fig. 3 (a) is pumped with the interference hot spot of Fig. 2
Optical microscopy image obtained from the optical microcavity of element；And
Fig. 4 is the laser map of corresponding diagram 3 (b), (c).
Specific embodiment
It is real below in order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention
Apply example combination attached drawing to the present invention is based on the preparation method of the single-mode laser element of bottle microcavity, the single-mode laser element and should
The application of single-mode laser element is specifically addressed.
Fig. 1 is the schematic diagram that the single-mode laser element based on bottle microcavity is prepared in the embodiment of the present invention.
In the present embodiment, the method for preparing the single-mode laser element based on bottle microcavity is as follows:
Step 1, first with drawing by high temperature farad general single mode fiber, prepare tip diameter at 0.5 μm and bore about
2 μm of micro-nano fiber 6 and optical fiber probe；
Step 2 will be spaced 2000 μm of glass slide 1, glass slide 2 lies in the first fixed in parallel one-dimensional precise respectively
On regulating platform 3, the second one-dimensional precise regulating platform 4, then by the micro-nano fiber 6 that step 1 is prepared be placed on glass slide 1, carry glass
On piece 2, the middle section of micro-nano fiber 6 is hanging；
Step 3, by R6G laser dye be dissolved in chloroform and by proper proportion and low viscosity epoxy resin (
506epoxy resin), curing agent (Product No.45346, Epoxy embedding medium, hardener DDSA)
Mixing, after on circumferential oscillation shaking table shaken well, with Uniform Doped R6G laser dye epoxy resin solution, wherein swash
Mass concentration of the photoinitiator dye in epoxy resin solution is 2.2%, and the volume ratio of chloroform and low viscosity epoxy resin is 1:8；
The optical fiber probe that tip aperture is 0.5 μm is immersed in the resin solution that modulates and is quickly extracted out by step 4；
Step 5 makes optical fiber probe and 6 Rapid contact of micro-nano fiber under an optical microscope, resin solution is adhered to micro-
On nano fiber 6, the optical microcavity 7 that the resin in micro-nano fiber 6 is polycondensed into the bottle type of different bores at random, optical microcavity are attached
7 diameters can be at 2.5~50 μm, but common 7 diameter of optical microcavity is generally in 3~7 μm；
The micro-nano fiber for being stained with resin solution is put into high temperature furnace and is heated to 60 DEG C by step 6, and constant temperature maintenance 10 is small
When, single-mode laser element is formed after resin solution curing.
Fig. 2 is the interference hot spot after two beam directional light line focuses；Fig. 3 (a) is single-mode laser member in the embodiment of the present invention
Optical microscopy imaging of the optical microcavity of part under 100 times of object lens, 4.27 μm of micro- cavity diameter；Fig. 3 (b) is with non-interfering equal
Even hot spot pumps optical microscopy image obtained from the optical microcavity of the single-mode laser element in Fig. 3 (a)；Fig. 3 (c) is to use
The interference hot spot of Fig. 5 pumps optical microscopy image obtained from the optical microcavity of the single-mode laser element of Fig. 3 (a)；And
Fig. 4 is the laser map of corresponding diagram 3 (b), (c).
The single-mode laser element being prepared in the present embodiment can also have such application:
Step 1, as shown in Fig. 2, obtaining interference hot spot to two beam parallel light focusings using focus lamp；
Step 2, the single-mode laser element that will interfere hot spot pumping that there is bottle microcavity；
Step 3 changes the fringe spacing of interference hot spot, is allowed to match with the Energy distribution of single-mode laser element, allows microcavity
In fundamental optical mode generate gain, and other higher order modes is allowed not have gain, can realize single-mode laser in cavity in this way
Output.
As shown in Fig. 3 (b) and 3 (c), multiple laser can be obtained using non-interfering uniform light spots pumping mono-mode laser diode
Mould field energy is allowed to match to obtain with the zlasing mode energy field of optical microcavity by the fringe spacing of regulation interference hot spot
Only remain a zlasing mode energy field.
As shown in figure 4, by regulation interference hot spot, laser becomes single mode from multimode output.
In addition, being placed in the single-mode laser element that R6G laser dye is prepared is adulterated under optical microscopy, frequency will be repeated
The laser brought into optical microscope that rate is 20Hz, pulse length is ns magnitude, wavelength is 532nm, to be irradiated to single-mode laser
On element, the bottle shape optical microcavity of single-mode laser element is based on Whispering-gallery-mode whispering gallery mode
(WGM), single mode or multimode Low threshold laser of the generation wavelength in 570~630nm, wherein 4.92 μm of the long axis of optical microcavity, it is short
3.99 μm of axis.By controlling the adjusting knob 5 of high-precision one-dimensional adjusting bracket, force-extension makes optical microcavity, and deformation occurs, leads
It causes cavity zlasing mode to drift about, achievees the purpose that laser tuning.After tuning, spectrum can stablize blue shift, also further
Illustrate that the single-mode laser element can be used for stress sensing.
In the present embodiment, the tip diameter of micro-nano fiber 6 and optical fiber probe can also control as needed at 0.5 μm
At 0.5~5 μm, to adapt to more situations.
In the present embodiment, mass concentration of the laser dye in epoxy resin solution is 2.2%, but can be according to need
It wants, the mass concentration of laser dye is controlled in the range of 2.0~2.5%.
In the present embodiment, organic solvent is chloroform, can also be acetone or ether, as long as organic molten used in guaranteeing
Agent can dissolve laser dye, and can also dissolve each other with low viscosity resin and curing agent.
In the present embodiment, the volume ratio of chloroform and low viscosity epoxy resin be 1:8, can as needed by organic solvent with
The volume ratio of low viscosity resin controls in the range of 1:5 to 1:10.
In the present embodiment, resin solution is configured using low viscosity epoxy resin, but when temperature is 25 DEG C, viscosity is small
It can be used in the low viscosity resin of 8000mPas.But the excessive resin material of viscosity is (such as: high molecular expoxy resin 607#
(Epikote1007), 609# (Epikote1007) etc.) due to excessive with micro-nano fiber surface viscous force, it is not easy or cannot lean on resin
Itself stress shrinks the optical microcavity to form class ellipsoid, so cannot use.
Such as the laser of different wave length in order to obtain, sharp laser gain material required for can pointedly selecting: cyanines class dye
Material, be generate infrared regime laser excellent variety, such as 3,3 '-diethyl sulfide tricarbocyanine salt compounded of iodine, lasers range be 540~
1200nm；Piperazine class dyestuff is red and infrared region laser dye, and photochemical stability is better than Luo Daming class, lasers range 650
~700nm；Coumarins dyestuff is using wider a kind of laser dye, and lasers range is 425~565nm, etc..When micro-
When chamber is used for stress sensing, the micro-nano fiber on glass slide can be hanked to elasticity, the preferable polymer nano-wire of toughness, such as used
Polyacrylamide (PAM), the polymer nano-wire of the materials such as polystyrene (PS) preparation, is greatly improved the precision of stress sensing
And the service life of device；Or use perovskite nano particle, quantum dot etc..
Under normal conditions, solidifying for different resins needs to select different curing agent, so after having selected resin, it is corresponding
Curing agent be equally determined, when available there are many curing agent, that preferable money of preferred optical transparent properties.
The action and effect of embodiment
Single-mode laser element, preparation method and its application according to involved in the present embodiment based on bottle microcavity,
Because having optical microcavity, and the ingredient of the optical microcavity is resin solution, the component of resin solution includes laser dye, organic
Solvent, low viscosity resin and curing agent, so, the single-mode laser element of the present embodiment is using low viscosity resin solution to micro-nano light
The characteristics of fine adhesiveness and resin solution stress polycondensation forms is polycondensed into various sizes of class ellipsoid on micro-nano fiber and returns
Sound wall mode optical micro-cavity, and pulse energy be receive burnt magnitude pumping under stablize output laser.The single mode of the present embodiment swashs
Optical element has preparation simple, and miniaturization, stable structure is cheap, the extremely low advantage of laser threshold.In addition, the present embodiment
Single-mode laser element preparation method is simple, transreplication, the volume production of single-mode laser element easy to accomplish.The single mode of the present embodiment
Laser diode maximum feature is can to interfere interference interval and the interference position of hot spot by changing, and efficiently realizes the single mode of laser
Output.
Above embodiment is preferred case of the invention, the protection scope being not intended to limit the invention.
Claims (4)
1. a kind of preparation method for preparing the single-mode laser element based on bottle microcavity, it is characterised in that:
The single-mode laser element includes:
Micro-nano fiber, tip diameter range is at 0.5~5 micron；
Optical microcavity is in bottle type, is set on the micro-nano fiber, and diameter is 2.5~50 microns,
The ingredient of the optical microcavity be resin solution, the component of the resin solution include laser gain material, organic solvent,
Low viscosity resin and curing agent,
The preparation method the following steps are included:
Optical fiber probe is immersed in the resin solution that modulates and is quickly extracted out by step 1；
Step 2 makes the optical fiber probe and the micro-nano fiber Rapid contact under an optical microscope, by the resin solution
It is adhered on the micro-nano fiber, the resin solution is polycondensed into the optical microcavity of the bottle type of different bores, institute at random
Micro-nano fiber is stated vacantly to place in advance on the glass substrate；
The micro-nano fiber for being stained with the resin solution is put into high temperature furnace and is heated to 60 DEG C by step 3, and constant temperature maintains 8
~12 hours, after it is described it is resin solution curing after form the single-mode laser element, the tip diameter range of the optical fiber probe
At 0.5~5 micron.
2. preparation method according to claim 1, it is characterised in that:
Wherein, the laser gain material is perovskite nano particle, quantum dot, cyanine type dye, piperazine class dyestuff, Coumarins dye
Any one in material.
3. preparation method according to claim 1, it is characterised in that:
Wherein, in step 1, steps are as follows for the resin solution of modulation:
Laser gain material is dissolved in the organic solvent, the low viscosity resin is added and curing agent mixing is equal
It is even.
4. single mode made from a kind of preparation method of single-mode laser element of the preparation based on bottle microcavity described in claim 1 swashs
The application of optical element, it is characterised in that:
Step 1 obtains interference hot spot using focus lamp to two beam parallel light focusings；
Step 2, by the interference hot spot pumping mono-mode laser diode；
Step 3 changes the fringe spacing of the interference hot spot, is allowed to the space with the optical mode of the single-mode laser element
Energy distribution matches, and the output of single-mode laser can be realized in optical microcavity.
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Families Citing this family (7)
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| CN107453196B (en) * | 2017-07-21 | 2020-02-18 | 上海理工大学 | Polymer bottle microcavity single-mode laser element based on micro-fiber probe loss modulation |
| CN108624966B (en) * | 2018-04-25 | 2021-01-22 | 上海理工大学 | Method for preparing stretchable single-mode laser element by electrostatic spinning |
| CN110299665A (en) * | 2019-06-24 | 2019-10-01 | 福建师范大学 | A kind of realization device and method of single-mode laser |
| CN111175900B (en) * | 2020-01-15 | 2021-11-16 | 河南科技大学 | Spherical colloid crystal microcavity and preparation method thereof |
| CN111190245B (en) * | 2020-02-28 | 2023-07-04 | 中国科学院上海技术物理研究所 | Planar funnel microcavity for realizing deep sub-wavelength photon mode volume of epitaxial material |
| CN111952827B (en) * | 2020-07-29 | 2023-06-20 | 华南理工大学 | Bottle-shaped polymer microcavity laser based on aggregation-induced emission dye gain and preparation method thereof |
| WO2023193485A1 (en) * | 2022-04-06 | 2023-10-12 | 深圳先进技术研究院 | Composite structure micro-bottle lens, and super-resolution imaging system based on micro-bottle lens |
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