CN104112972A - Chalcogenide glass based spherical micro-cavity laser manufacture method - Google Patents
Chalcogenide glass based spherical micro-cavity laser manufacture method Download PDFInfo
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- CN104112972A CN104112972A CN201410355898.4A CN201410355898A CN104112972A CN 104112972 A CN104112972 A CN 104112972A CN 201410355898 A CN201410355898 A CN 201410355898A CN 104112972 A CN104112972 A CN 104112972A
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Abstract
A chalcogenide glass based spherical micro-cavity laser manufacture method includes the following steps of grinding blocky chalcogenide glass into powders, screening the powders with a fine-mesh screen, manufacturing a spherical glass micro-cavity using a powder floating, high-temperature melting, and cooling method, enabling an optical taper to approach to the surface of the spherical glass micro-cavity, and using evanescent waves on the surface of the optical taper to stimulate gain media in the micro-cavity so as to generate lasers. The chalcogenide glass based spherical micro-cavity laser manufacture method is convenient to manufacture and easy to operate, and the manufactured spherical glass micro-cavity has the advantages of microminiaturization, low threshold values, high coupling efficiency, easiness to integrate, and the like.
Description
Technical field
The present invention relates to a kind of manufacture method of laser, particularly relate to a kind of manufacture method of ball micro-cavity laser.
Background technology
Micro-structural laser is a kind of very important optics, at aspects such as optical information processing, optical integrated circuit and chemistry, biology sensors, has a wide range of applications.Along with optical fiber preparation technology's development and improvement, the technology of preparing low loss fiber cone is ripe, and low loss fiber cone can successfully prepare.When light is propagated in optical fiber, at optical fiber surface, exist that amplitude optical fiber radially increases and the evanescent wave that is exponential damping, when light is propagated in micron order optical fiber, evanescent wave can further strengthen.The coupling that utilizes the evanescent wave of optical taper and the evanescent wave overlaid of Microstructure Optics device and carry out has been proved to be the most effectively coupled modes.Microsphere resonator, micro-dish resonant cavity and micro-ring core resonant cavity of conventional quartz glass matrix are all successfully prepared now, and the method for preparing glass microsphere resonant cavity by the floating high-temperature melting method of powder obtains successfully in phosphate glass, but chalcogenide glass matrix micro-structural laser unsuccessful making also before this.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of manufacture method of the ball micro-cavity laser based on chalcogenide glass.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of manufacture method of the ball micro-cavity laser based on chalcogenide glass, is characterized in that: comprise the following steps:
1) by block chalcogenide glass grind into powder, and utilize fine ga(u)ge screen that powder is sieved and got;
2) by the floating high-temperature fusion cooling method of powder, make glass ball microcavity;
3) by an optical taper near glass ball microcavity surface, utilize the evanescent wave on optical taper surface to excite gain media in microcavity to produce laser.
Preferably, above-mentioned steps 1) in, successively with the fine ga(u)ge screen that aperture is 0.088mm and two kinds of specifications of 0.063mm, powder is sieved and got, obtain the powder of diameter between 0.063mm-0.088mm.
Preferably, step 2 wherein) concrete steps are: the powder of rear-earth-doped chalcogenide glass is incorporated in the quartz glass tube in high temperature and atmosphere of inert gases, at high temperature melting of powder is drop and becomes spheroid by surface tension effects, under Action of Gravity Field, droplets fall is also cooled to glass ball microcavity.
Preferably, the optical taper step 3) can be made by following methods: utilizing standard single-mode fiber (2) that high-temperature heating pulling method is 125um by diameter to be drawn into cone waist diameter is the optical taper of 1 μ m～2 μ m.
Preferably, the diameter of described glass ball microcavity is 50 μ m～200 μ m.
Preferably, the rare earth impurities of described doping is neodymium ion.
Preferably, described block chalcogenide glass can be prepared with high-temperature fusion quenching method.
Compared with prior art, the invention has the advantages that this chalcogenide glass ball micro-cavity laser, not only simple in structure, prepare easy, and there is microminiaturization, threshold value is low, coupling efficiency is high, the characteristic such as easy of integration.
Accompanying drawing explanation
Fig. 1 is the principle schematic of ball micro-cavity laser of the present invention.
Fig. 2 is the spectrogram of the single-mode laser of this laser output.
Fig. 3 is the spectrogram of the multi-mode laser of this laser output.
Fig. 4 is the graph of a relation that the Output of laser of this laser changes with input pump power.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
Ball micro-cavity laser based on chalcogenide glass of the present invention, first need with the block chalcogenide glass of mixing rare earth impurities of high-temperature fusion quenching method preparation, certainly also can utilize other method preparation to mix the chalcogenide glass of rare earth impurities, then block chalcogenide glass is passed through to mortar grind into powder, with fine ga(u)ge screen, powder is sieved and got again, then by the floating high-temperature fusion cooling method of powder, make glass ball microcavity, an optical taper is surperficial near microcavity, utilize the evanescent wave on optical taper surface to excite gain media in microcavity to produce laser, generate the ball micro-cavity laser based on chalcogenide glass.
Process is as follows particularly: utilize high-temperature fusion quenching method to prepare block chalcogenide glass, and wherein mix rare earth impurities, the mass fraction that for example can adulterate is 0.5% neodymium ion.By the Massive Sulphur preparing, it is glass breaking, and put into mortar grind into powder, then with aperture, be successively the fine ga(u)ge screen screening of 0.088mm and two kinds of specifications of 0.063mm, obtain the powder of diameter between 0.063mm-0.088mm, the size of the ball microcavity that can manufacture as required, selects the size dimension of the powder that needs.Utilize the floating high-temperature fusion cooling method of powder to make glass ball microcavity, being about to rear-earth-doped chalcogenide glass powder is incorporated in the quartz glass tube in high temperature and atmosphere of inert gases, at high temperature melting of powder is drop and becomes spheroid by surface tension effects, under Action of Gravity Field, droplets fall is also cooled to ball microcavity.Utilizing standard single-mode fiber 2 that high-temperature heating pulling method is 125 μ m by diameter to be drawn into cone waist diameter is the optical taper of 1.7 μ m.Ball microcavity 1 is sticked to one end of the optical taper after drawing-down, then optical fiber is put on high-precision three-dimensional regulating platform, accurate control position, slowly by both near and both are just contacted.Now, from one end of optical fiber, input continuous pump light, for example, input wavelength is the continuous pump light of 808nm, and the evanescent wave of optical taper can partly excite the evanscent field in ball microcavity, and the continuous pump light of input can enter into ball microcavity, thereby excitation rare-earth ion produces fluorescence, by continuous increase pump power, when the gain of rare earth ion is greater than cavity loss, just have Laser output.Fig. 2, Fig. 3 are respectively the laser characteristics figure that this laser obtains, respectively single-mode laser performance plot and multi-mode laser performance plot.And by test, laser threshold is about 1.394mW.
With 808nm wave band semiconductor laser as pumping source, before chalcogenide glass ball microcavity and optical taper coupling, the semiconductor laser that first scans 808nm wave band passes through the size of the luminous power after optical taper under different pumping currents, and using luminous power now as the pump power to chalcogenide glass ball microcavity.Then by chalcogenide glass ball microcavity and optical taper slowly near and just contact, carefully measure the power output obtaining under the different pumping currents of semiconductor laser, Fig. 4 is the Output of laser power of ball micro-cavity laser and the variation relation between input pump power again.
In above-mentioned preparation method, the diameter of chalcogenide glass ball microcavity is 50 μ m～200 μ m, and the rare earth impurities of doping is neodymium ion, and the diameter range of optical taper cone waist can, between 1 μ m～2 μ m, preferably, be 1.7 μ m.
The manufacture method of this chalcogenide glass ball micro-cavity laser, not only prepare easy, easy operating, and the ball micro-cavity laser of making has microminiaturization, threshold value is low, coupling efficiency is high, the characteristic such as easy of integration.
Claims (7)
1. a manufacture method for the ball micro-cavity laser based on chalcogenide glass, is characterized in that: comprise the following steps:
1) by Massive Sulphur, be glass grinding powdered, and utilize fine ga(u)ge screen that powder is sieved and got;
2) by the floating high-temperature fusion cooling method of powder, make glass ball microcavity;
3) by an optical taper near glass ball microcavity surface, utilize the evanescent wave on optical taper surface to excite gain media in microcavity to produce laser.
2. the manufacture method of the ball micro-cavity laser based on chalcogenide glass as claimed in claim 1, it is characterized in that: above-mentioned steps 1), successively with the fine ga(u)ge screen that aperture is 0.088mm and two kinds of specifications of 0.063mm, powder is sieved and got, obtain the powder of diameter between 0.063mm-0.088mm.
3. the manufacture method of the ball micro-cavity laser based on chalcogenide glass as claimed in claim 1, it is characterized in that: step 2 wherein) concrete steps be: the powder of rear-earth-doped chalcogenide glass is incorporated in the quartz glass tube in high temperature and atmosphere of inert gases, at high temperature melting of powder is drop and becomes spheroid by surface tension effects, under Action of Gravity Field, droplets fall is also cooled to glass ball microcavity.
4. the manufacture method of the ball micro-cavity laser based on chalcogenide glass as claimed in claim 1, is characterized in that: step 3) in optical taper can be made by following methods: utilizing standard single-mode fiber (2) that high-temperature heating pulling method is 125um by diameter to be drawn into cone waist diameter is the optical taper of 1 μ m～2 μ m.
5. the manufacture method of the ball micro-cavity laser based on chalcogenide glass as described in claim 1 or 3, is characterized in that: the diameter of described glass ball microcavity is 50 μ m～200 μ m.
6. the manufacture method of the ball micro-cavity laser based on chalcogenide glass as described in claim 1-4 any one, is characterized in that: the rare earth impurities of described doping is neodymium ion.
7. the manufacture method of the ball micro-cavity laser based on chalcogenide glass as claimed in claim 1, is characterized in that: described block chalcogenide glass can be prepared with high-temperature fusion quenching method.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319609A (en) * | 2014-10-23 | 2015-01-28 | 北京工业大学 | Optical fiber micro-structural resonant cavity |
| CN107946893A (en) * | 2017-11-24 | 2018-04-20 | 中国计量大学 | The saturable absorber device of gradual change multimode single mode structure based on microcavity built in single mode |
| CN108258571A (en) * | 2018-02-06 | 2018-07-06 | 哈尔滨工程大学 | Microballoon cavity laser preparation method based on superpower upper conversion multicomponent glass material |
| CN108321670A (en) * | 2018-03-22 | 2018-07-24 | 华南理工大学 | A kind of micro-cavity laser of cascaded pump |
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| US5682401A (en) * | 1994-10-05 | 1997-10-28 | Massachusetts Institute Of Technology | Resonant microcavities employing one-dimensionally periodic dielectric waveguides |
| US5878070A (en) * | 1995-05-25 | 1999-03-02 | Northwestern University | Photonic wire microcavity light emitting devices |
| US20010033587A1 (en) * | 2000-03-09 | 2001-10-25 | California Institute Of Technology | Micro-cavity laser |
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Patent Citations (3)
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| US5682401A (en) * | 1994-10-05 | 1997-10-28 | Massachusetts Institute Of Technology | Resonant microcavities employing one-dimensionally periodic dielectric waveguides |
| US5878070A (en) * | 1995-05-25 | 1999-03-02 | Northwestern University | Photonic wire microcavity light emitting devices |
| US20010033587A1 (en) * | 2000-03-09 | 2001-10-25 | California Institute Of Technology | Micro-cavity laser |
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| 吕社钦 等: "Er3+掺杂硫系玻璃微球在980nm激光泵浦下的荧光特性", 《发光学报》 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319609A (en) * | 2014-10-23 | 2015-01-28 | 北京工业大学 | Optical fiber micro-structural resonant cavity |
| CN107946893A (en) * | 2017-11-24 | 2018-04-20 | 中国计量大学 | The saturable absorber device of gradual change multimode single mode structure based on microcavity built in single mode |
| CN108258571A (en) * | 2018-02-06 | 2018-07-06 | 哈尔滨工程大学 | Microballoon cavity laser preparation method based on superpower upper conversion multicomponent glass material |
| CN108321670A (en) * | 2018-03-22 | 2018-07-24 | 华南理工大学 | A kind of micro-cavity laser of cascaded pump |
| CN108321670B (en) * | 2018-03-22 | 2023-12-01 | 华南理工大学 | Cascaded pumped microcavity laser |
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Application publication date: 20141022 |