CN102684043A - Multiband echo wall mode type fiber laser based on polydimethylsiloxane (PDMS) and processing method thereof - Google Patents
Multiband echo wall mode type fiber laser based on polydimethylsiloxane (PDMS) and processing method thereof Download PDFInfo
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Abstract
The invention discloses a multiband echo wall mode type fiber laser based on polydimethylsiloxane (PDMS). The laser and a light-guiding optical fiber are integrated on the same chip by using the PDMS as a substrate, namely a multimode silica optical fiber with single refractive index and at least one wedge-shaped optical fiber are coupled at different positions and then embedded into the PDMS substrate, at least one optical fiber groove is carved on the coupling contact position of the PDMS substrate and the silica optical fiber and the wedge-shaped optical fiber, gain cladding dielectric solution with low refractive index is respectively filled in the optical fiber grooves, and the substrate is packed so that the multiband echo wall mode type fiber laser is formed. The multiband echo wall mode type fiber laser adopts an axial evanescent wave and light pumping mode along the optical fiber, optical feedback is provided by laser gain through an echo wall mode with extremely high quality factor in an optical round resonant cavity, and laser radiation with long generation length and extremely low threshold is achieved. The multiband echo wall mode type fiber laser based on PDMS is simple in process and low in manufacturing cost, achieves directional output on one chip simultaneously, and provides fluorescence or laser sources for biochemical experiments in a laboratory on the chip.
Description
Technical field
The invention belongs to laser and micro-fluidic optical technical field, relate to a kind of optical pumping mode of utilizing,, on chip piece, realize the fiber laser and the processing method thereof of multiband Whispering-gallery-mode laser orientation output simultaneously through the evanscent field excitation gain of pumping light.
Background technology
The microminiaturization of optics, adjustableization integrated and optical parametric are one of main directions of Modern Optics Technology development.Defectives such as the traditional optical device has that volume is big, cost is high, adjustability and poor stability, this has directly hindered the microminiaturization and the integrated process of contemporary optics system.In order to reduce cost, reduce human input, improve experimental precision and repeatability, contemporary optics research usually need be integrated in one independently on the chip with the kinds of experiments function, i.e. " laboratory on the chip " (lab on a chip).Micro-fluidic optical (Optofluidics) is that contemporary optics, optoelectronics and microflow control technique combine and the novel crossed front subject and the technology that form, can on micro-meter scale, reach the optics of regulating system or the purpose of optoelectronics characteristic through controlling fluid.The micro-fluidic optical system has fast, efficient, advantage such as the sample sampling is few, in field extensive uses such as biotechnology, chemical analysis, environmental sciences.Yet, two topmost parts of micro-fluidic optical system, promptly light source and transducer but are difficult to be integrated in the chip, thereby have limited the functional integration and the portability of micro-fluidic optical system.In order to realize the integrated of light source and micro-fluidic chip; A plurality of seminar propose and have showed that the micro-fluidic chip laser of different structure and material is (such as B. Helbo; A. Kristensen and A. Menon. A micro-cavity fluidic dye laser [J]
J. Micromech. Microeng, 2003,13 (03): 307-311; Also has D. V. Vezonov, B. T. Mayers, Conroy R S
Et al.. A low-threshold, high-effciency microfluidic waveguide laser [J],
J. AM. CHEM. SOC. 2005,127 (25): 8952-8953; And J.C. Galas, J. Torres, M. Belotti
Et al.. Microfluidic tunable dye laser with integrated mixer and ring resonator [J],
App. Phy. Lett.2005,86 (26): 264101-1-264101-3 etc.), but this type laser exists complex structure or the more high shortcoming of pumping threshold energy.The inventor has carried out comparatively systematic research and analysis (Jiang Nan to the prior art of the Whispering-gallery-mode fiber laser of evanescent wave (Evanescent Wave) excitation; Du Fei; Bai Ran etc. influence the factor [J] of cylindrical microcavities echo wall die laser pumping threshold energy, Chinese laser; 2008,35 (5): 660～663; Zhang Yuanxian, Han Deyu, Zhu Kun etc., the Whispering-gallery-mode optical-fiber laser wave length shift [J] that the covering medium causes, Chinese laser, 2010,36 (3): 691～694; General cloudling, white right, Xiang Wenli etc., the two waveband optical fiber Whispering-gallery-mode laser emission [J] of disappearance wave excitation, Acta Physica Sinica, 2009,58 (6): 3923-3928; Y. X. Zhang, X. Y. Pu, K. Zhu,
Et al..Threshold Property of Whispering-Gallery-Mode Fiber Lasers Pumped by Evanescent-wave [J],
J. Opt. Soc. Am. B. 2011,28 (8): 2048～2056; General cloudling, Jiang Nan, Bai Ran etc.; Multiband Whispering-gallery-mode (the Whispering Gallery Mode of evanescent wave excitation and gain coupled; WGM) fiber laser, Chinese patent, the patent No.: ZL200810058304); This fiber laser is inserted with a quartzy bare fiber in the glass bushing of gain covering solution, along having realized Whispering-gallery-mode laser emission under the condition of shaft axis of optic fibre evanescent wave optical pumping excitation gain.Yet there is the shortcoming that is not easy microminiaturization, poor stability and the radiation of lacking direction property in this Whispering-gallery-mode fiber laser, has hindered it directly is integrated into the possibility on the chip as microlaser.For this reason, develop a kind of can be microminiaturized, integrated level is high, and has the fiber laser that longer laser produces length and low pumping threshold ability and have broad application prospects.
Summary of the invention
First purpose of the present invention is to provide a kind of simple in structure; Be integrated in on the chip piece and can realize multiband Whispering-gallery-mode laser orientation output simultaneously, and good stability, integrated level high, be easy to microminiaturization, have longer laser to produce length and the lower fiber laser of pumping threshold energy; Second purpose of the present invention is to provide a kind of processing method of this laser.
First purpose of the present invention is to realize like this; Laser and light-conductive optic fibre are integrated on the chip piece as substrate with dimethyl silicone polymer PDMS; Described PDMS substrate is provided with silica fiber and cuneiform optical fiber coupling contact position and inserts groove at least; Gain covering medium, its outer package substrate are filled in segmentation in the said groove.
Second purpose of the present invention is achieved in that with dimethyl silicone polymer PDMS and as substrate laser and light-conductive optic fibre is integrated on the chip piece, specifically comprises the following steps:
A, with a single refractive index
n 1Multimode silica fiber and at least one cuneiform optical fiber after the diverse location coupling, be implanted to than low-refraction
n 2The PDMS substrate in, carve at least one optical fiber groove at the contact position of PDMS substrate and silica fiber and cuneiform optical fiber coupling, low-refraction is inserted in segmentation in the optical fiber groove
n 3Gain covering medium solution and with substrate package, described
n 1>
n 2And
n 1>
n 3
B, employing realize the orientation output of multiband Whispering-gallery-mode laser simultaneously along the axial evanescent wave optical pumping of silica fiber mode.
The present invention is implanted to the dimethyl silicone polymer (Polydimethylsiloxane than low-refraction through multimode silica fiber and at least one cuneiform optical fiber of single refractive index after the diverse location coupling; PDMS) in the substrate; Contact position in PDMS substrate and silica fiber and cuneiform optical fiber coupling carves at least one optical fiber groove; In the optical fiber groove, insert the gain covering medium solution of low-refraction respectively; The Whispering-gallery-mode laser that utilizes evanescent wave excitation along fiber axis to there being longer laser to produce the characteristics of length; In an optical fiber, realize the orientation output of multiband Whispering-gallery-mode laser simultaneously, form a kind of multiband Whispering-gallery-mode fiber laser based on PDMS.
The present invention and prior art relatively have following good effect:
1, the present invention replaces glass bushing that laser is solidified with PDMS, simple in structure, have longer laser to produce length, the pumping threshold energy is lower, has remedied the deficiency of conventional laser poor stability, helps the integrated and microminiaturized of laser and detector;
2, the technical process that arrives involved in the present invention is simple, with low cost, and realizes the orientation output of multiband Whispering-gallery-mode laser easily, and required light source can be provided for the biochemical test on the chip.
Description of drawings
Fig. 1 is invention operation principle sketch map;
Among the figure: the silica fiber of 1-pumping light, 2-pumping angle of light, the single refractive index of 3-, 4-PDMS, 5-optical fiber groove, the laser gain covering solution of 6-low-refraction, 7-cuneiform optical fiber.
Fig. 2 is monochromatic Whispering-gallery-mode laser profile;
Among the figure: the evanscent field of the laser gain covering solution of the silica fiber of 1-pumping light, 2-pumping angle of light, the single refractive index of 3-, 4-PDMS, 5-optical fiber groove, 6-low-refraction, the 7-pumping light cylindrical microcavity Whispering-gallery-mode of evanscent field, 8-in gain media solution.
Fig. 3 for the wavelength be the frequency multiplication YAG laser of 532nm as pumping light, laser emission intensity of being done and pumping energy variation relation figure.Among the figure: abscissa is a pumping energy, and unit is little joule, and ordinate is a laser emission intensity, and unit is an arbitrary unit.Upper left corner illustration is the Whispering-gallery-mode laser light spectrogram of monochromatic intermediate resolution, and wherein, abscissa is a wavelength, and unit is a nanometer, and ordinate is a laser emission intensity, and unit is an arbitrary unit.
Fig. 4 for the wavelength be the frequency multiplication YAG laser of 532nm as pumping light, the concentration that collects is 8 * 10
-3The Whispering-gallery-mode generation of Laser length of the ethanolic solution of the rhodamine B of mol/L is with the variation relation of pumping energy;
Among the figure: abscissa is a pumping energy, and unit is little joule, and ordinate is a Whispering-gallery-mode generation of Laser length, and unit is centimetre; Triangle symbol " ▲ " expression experiment value, solid line is the theoretical fitting value.
Fig. 5 for wavelength be the frequency multiplication YAG laser of 532 nm as pumping light, the three look intermediate resolution Whispering-gallery-mode laser light spectrograms that collect.Among the figure: abscissa is a wavelength, and unit is a nanometer; Ordinate is a laser emission intensity, and unit is an arbitrary unit;
Among Fig. 5-a, sodium yellow, the laser emission of the Whispering-gallery-mode of wave-length coverage between 574～582 nm is produced by the rhodamine 6G ethanolic solution;
Among Fig. 5 b, orange-colored light, the laser emission of the Whispering-gallery-mode of wave-length coverage between 598～606 nm is produced by rhodamine 610 ethanolic solutions;
Among Fig. 5 c, red light, the laser emission of the Whispering-gallery-mode of wave-length coverage between 627～634 nm is produced by rhodamine 640 ethanolic solutions.
Fig. 6 for wavelength be the frequency tripling YAG laser of 355 nm as pumping light, the three look intermediate resolution Whispering-gallery-mode laser light spectrograms that collect.Among the figure: abscissa is a wavelength, and unit is a nanometer; Ordinate is a laser emission intensity, and unit is an arbitrary unit;
Among Fig. 6 a, blue light, the laser emission of the Whispering-gallery-mode of wave-length coverage between 426～434 nm is 1 * 10 by concentration
-4The ethylene glycol solution of the talan 420 of mol/L produces;
Among Fig. 6 b, green light, the laser emission of the Whispering-gallery-mode of wave-length coverage between 502～516 nm is 5 * 10 by concentration
-3Mol/L cumarin 500 ethanol and ethylene glycol mixed solution produce;
Among Fig. 6 c, red light, the laser emission of the Whispering-gallery-mode of wave-length coverage between 690～698 nm is 4 * 10 by concentration
-2LDS 698 ethanolic solutions of mol/L produce.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described, but never in any form the present invention is limited, any change or replacement according to training centre of the present invention is done all belong to protection scope of the present invention.
The processing method of laser of the present invention is integrated in laser and light-conductive optic fibre on the chip piece as substrate with dimethyl silicone polymer PDMS, with a single refractive index
n 1Multimode silica fiber and at least one cuneiform optical fiber after the diverse location coupling, be implanted to than low-refraction
n 2The PDMS substrate in, carve at least one optical fiber groove at the contact position of PDMS substrate and silica fiber and cuneiform optical fiber coupling, low-refraction is inserted in segmentation in the optical fiber groove
n 3Gain covering medium solution and with substrate package, described
n 1>
n 2And
n 1>
n 3Employing realizes the orientation output of multiband Whispering-gallery-mode laser simultaneously along the axial evanescent wave optical pumping of silica fiber mode.
As preferred implementation: described pumping mode is an evanescent wave light along fiber axis in gain covering solution, propagating with frustrated total reflection, laser gain along fiber axis to the regularity of distribution obtain by (1) formula:
In the formula,
CBe a constant of confirming jointly by the coupling efficiency of pumping light and the fluorescence quantum efficiency of dye molecule etc.,
N 0Concentration for dye molecule; λ
p Be pumping light wavelength in a vacuum;
ε p0
Be the pumping energy of pumping light in the silica fiber end,
θ t Be the angle of total reflection of pumping light at optical fibre interface, for assembly average,
n 1With
n 3Be respectively the refractive index of optical fiber and gain covering solution, and
n 1>
n 3Be respectively pumping light at dye solution and the absorption coefficient in silica fiber,
η p Ratio for the intensity of pumping light outside optical fiber and inside and outside the optical fiber;
Under the condition of said evanescent wave optical pumping, the total losses of Whispering-gallery-mode laser are obtained by (2) formula in the cylindrical microcavity:
In the formula and represent Whispering-gallery-mode laser respectively at gain covering solution and the absorption coefficient in optical fiber,
η WGMBe the evanscent field of Whispering-gallery-mode laser and the ratio of the volume of total mould field.
Described laser is obtained by (3) formula to the maximum length that produces along fiber axis:
, (3)
In the formula,
Z MaxFor the maximum of laser produces length and is respectively the fiber end face place and the pumping energy at the maximum generation of laser length place.
The low-refraction that segmentation is inserted in the described optical fiber groove
n 3Gain covering medium solution be in ethanolic solution or ethylene glycol solution or ethanol and the ethylene glycol mixed solution of rhodamine 6G, rhodamine B, rhodamine 610, rhodamine 640, cumarin 500, talan 420 and LDS698 any one or more than one.
The ethanolic solution of described rhodamine 6G, rhodamine B, rhodamine 610, rhodamine 640, cumarin 500, talan 420 and LDS698 or ethylene glycol solution or ethanol and ethylene glycol mixed solution concentration are 1 * 10
-4～4 * 10
-2Mol/L.
The quantity of described optical fiber groove and the quantity of cuneiform optical fiber are complementary.
Operation principle of the present invention:
Be implanted to PDMS substrate 4 after the silica fiber 3 of single refractive index and cuneiform optical fiber 7 couplings, carve 3 optical fiber grooves 5, encapsulate after in 5, inserting the gain medium solution 6 of low-refraction respectively at the contact position of PDMS substrate 4 and coupled fiber.The angle that pumping light 1 needs when at the interface of covering 4 total reflection taking place less than light with incidence angle 2 (
θ Ic) and the angle that needs when frustrated total reflection taking place at gain covering 5 interfaces along fiber axis to the silica fiber 3 that gets into single refractive index; Photon in the evanscent field of cylindrical microcavity Whispering-gallery-mode produces stimulated radiation in gain covering 5; And under the support of cylindrical microcavity Whispering-gallery-mode; Form three look Whispering-gallery-mode laser emissions, the Whispering-gallery-mode laser vertical is come out in 3 fringe radiation axial and edge 3, and the orientation of realization three look laser is exported after cuneiform optical fiber 7 couplings.
Adopt device shown in Figure 2, use wavelength as the frequency multiplication YAG laser of 532nm as pumping light, pumping light is after the condenser lens of 20 mm converges, with 2 through a focal length
θ i=29
oThe incident cone angle get into the front end face of optical fiber 3,
θ iLess than angle, maximum input aperture
θ Ic=22.7
o, light is propagated with the total reflection mode in PDMS section 4, and light gets into the incidence angle of gain covering section 6 at optical fibre interface
θ t=80.1
o, greater than critical angle of incidence
θ c=69.2
oSo,, pumping light is propagated to (Z axle) along fiber axis with the frustrated total reflection mode in gain covering section 6.Perpendicular to fiber axis to arbitrary section all constitute a cylindrical microcavity; The evanscent field 7 excitation dyestuffs of pumping light in gain covering solution produce gain; Photon in the cylindrical microcavity Whispering-gallery-mode evanscent field 8 produces stimulated radiation in the dyestuff gain, under the support of microcavity Whispering-gallery-mode, form laser generation.The luminous energy of Whispering-gallery-mode laser radiates along the direction of optical fiber surface perpendicular to the Z axle, delivers to the spectra collection system by light-conductive optic fibre.Laser along the generation length of Z axle by one be parallel to the Z axle ruler measure.
Fig. 3 is the variation relation of laser emission intensity with pumping energy, and upper left corner illustration is the Whispering-gallery-mode laser light spectrogram of the intermediate resolution that collects of the grating of 2400 g/mm for using density.Visible by Fig. 3, when pumping energy surpassed 8.7 μ J, laser emission intensity sharply increased, and the pumping energy of 8.7 μ J is exactly the threshold energy of this Whispering-gallery-mode laser.
Fig. 4 is that concentration is 4 * 10
-3The Whispering-gallery-mode generation of Laser length of the ethanolic solution of the rhodamine B of mol/L is with the variation relation of pumping energy.Triangle symbol " ▲ " expression experiment value, solid line is the theoretical fitting value.Can know by Fig. 4; When pumping energy is low; Whispering-gallery-mode generation of Laser length increases rapidly with the increase of pumping energy; After laser generation length reached certain numerical value, the trend that generation of Laser length increases rapidly with the increase of energy slowed down, and continued energization and can not significantly increase generation of Laser length.Utilize Whispering-gallery-mode laser along fiber axis to having the long characteristics that produce length; Axial segmentation (5 among Fig. 1) at optical fiber is inserted different laser gain media solution, can in an optical fiber, realize the orientation output of multiband Whispering-gallery-mode laser simultaneously.
Segmentation is inserted concentration and is 4 * 10 in optical fiber groove 5 shown in Figure 1
-3The ethanolic solution of the rhodamine 640 of mol/L, rhodamine 610 and rhodamine 6G; The frequency multiplication YAG laser that with the wavelength is 532nm is as pumping light; Pumping light is axial along silica fiber, and the Whispering-gallery-mode laser spectroscopy of the intermediate resolution that collects with the grating of 2400g/mm at the end of optical fiber 7 is shown in Fig. 5 a, Fig. 5 b, Fig. 5 c.In an optical fiber, realize the orientation output of " Huang-orange-red " triband laser simultaneously.
To insert concentration be 4 * 10 in segmentation in optical fiber groove 5 shown in Figure 1
-2 LDS 698 ethanolic solutions, 5 * 10 of mol/L
-3Mol/L cumarin 500 ethanol and ethylene glycol mixed solution and 1 * 10
-4The ethylene glycol solution of the talan 420 of mol/L; The frequency tripling YAG laser that with the wavelength is 355nm is as pumping light; Pumping light is axial along silica fiber, and the Whispering-gallery-mode laser spectroscopy of the intermediate resolution that collects with the grating of 2400g/mm at the end of optical fiber 7 is shown in Fig. 6 a, Fig. 6 b, Fig. 6 c.In an optical fiber, realize the orientation output of " R-G-B " triband laser simultaneously.
Segmentation is inserted concentration and is 4 * 10 in the optical fiber groove 5
-2The ethanol of the cumarin 500 of mol/L, talan 420 and LDS698 and ethylene glycol 1:1 mixed solution; The frequency multiplication YAG laser that with the wavelength is 532nm is as pumping light; Pumping light is axial along silica fiber, realizes the orientation output of " R-G-B " triband laser simultaneously at the end of optical fiber 7.
Segmentation is inserted concentration and is 1 * 10 in the optical fiber groove 5
-4The ethylene glycol solution of the rhodamine 640 of mol/L, rhodamine 610, talan 420; The frequency multiplication YAG laser that with the wavelength is 532nm is as pumping light; Pumping light is axial along silica fiber, realizes the orientation output of " red-orange-indigo plant " triband laser simultaneously at the end of optical fiber 7.
Segmentation is inserted concentration and is 8 * 10 in the optical fiber groove 5
-4The ethylene glycol solution of the rhodamine 640 of mol/L, talan 420 and LDS698; The frequency multiplication YAG laser that with the wavelength is 532nm is as pumping light; Pumping light is axial along silica fiber, realizes the orientation output of " red-red-indigo plant " triband laser simultaneously at the end of optical fiber 7.
Embodiment 9
Segmentation is inserted concentration and is 4 * 10 in the optical fiber groove 5
-3The ethanol of the cumarin 500 of mol/L, talan 420 and rhodamine 6G and ethylene glycol 1:3 mixed solution; The frequency multiplication YAG laser that with the wavelength is 532nm is as pumping light; Pumping light is axial along silica fiber, realizes the orientation output of " Huang-green-indigo plant " triband laser simultaneously at the end of optical fiber 7.
Segmentation is inserted concentration and is 1 * 10 in the optical fiber groove 5
-3The ethanol of talan 420, LDS698 and the rhodamine 6G of mol/L and ethylene glycol 2:3 mixed solution; The frequency multiplication YAG laser that with the wavelength is 532nm is as pumping light; Pumping light is axial along silica fiber, realizes the orientation output of " red-Huang-indigo plant " triband laser simultaneously at the end of optical fiber 7.
Embodiment 11
Segmentation is inserted concentration and is 8 * 10 in the optical fiber groove 5
-3The ethanolic solution of cumarin 500, LDS698 and the rhodamine 6G of mol/L; The frequency multiplication YAG laser that with the wavelength is 532nm is as pumping light; Pumping light is axial along silica fiber, realizes the orientation output of " red-yellow-green " triband laser simultaneously at the end of optical fiber 7.
Embodiment 12
Segmentation is inserted concentration and is 2 * 10 in the optical fiber groove 5
-2The ethanolic solution of the rhodamine 610 of mol/L, talan 420 and LDS698; The frequency multiplication YAG laser that with the wavelength is 532nm is as pumping light; Pumping light is axial along silica fiber, realizes the orientation output of " red-orange-indigo plant " triband laser simultaneously at the end of optical fiber 7.
Embodiment 13
Segmentation is inserted concentration and is 4 * 10 in the optical fiber groove 5
-4The ethanol of the rhodamine 610 of mol/L, cumarin 500 and LDS698 and the 1:5 mixed solution of ethylene glycol; The frequency multiplication YAG laser that with the wavelength is 532nm is as pumping light; Pumping light is axial along silica fiber, realizes the orientation output of " red-orange-green " triband laser simultaneously at the end of optical fiber 7.
Claims (9)
1. multiband Whispering-gallery-mode fiber laser based on PDMS; Laser and light-conductive optic fibre are integrated on the chip piece as substrate with dimethyl silicone polymer PDMS; It is characterized in that: described PDMS substrate is provided with silica fiber and cuneiform optical fiber coupling contact position and inserts groove at least; Gain covering medium, its outer package substrate are filled in segmentation in the said groove.
2. the processing method of the multiband Whispering-gallery-mode fiber laser based on PDMS according to claim 1 is integrated in laser and light-conductive optic fibre on the chip piece as substrate with dimethyl silicone polymer PDMS, it is characterized in that:
A, with a single refractive index
n 1Multimode silica fiber and at least one cuneiform optical fiber after the diverse location coupling, be implanted to than low-refraction
n 2The PDMS substrate in, carve at least one optical fiber groove at the contact position of PDMS substrate and silica fiber and cuneiform optical fiber coupling, low-refraction is inserted in segmentation in the optical fiber groove
n 3Gain covering medium solution and with substrate package, described
n 1＞ n 2And
n 1＞ n 3
B, employing realize the orientation output of multiband Whispering-gallery-mode laser simultaneously along the axial evanescent wave optical pumping of silica fiber mode.
3. the processing method of the multiband Whispering-gallery-mode fiber laser based on PDMS according to claim 2; It is characterized in that: described pumping mode is an evanescent wave light along fiber axis in gain covering solution, propagating with frustrated total reflection, laser gain along fiber axis to the regularity of distribution obtain by (1) formula:
In the formula,
CBe a constant of confirming jointly by the coupling efficiency of pumping light and the fluorescence quantum efficiency of dye molecule etc.,
N 0Concentration for dye molecule; λ
p Be pumping light wavelength in a vacuum;
ε p0
Be the pumping energy of pumping light in the silica fiber end,
θ t Be the angle of total reflection of pumping light at optical fibre interface,
For
Assembly average,
n 1With
n 3Be respectively the refractive index of optical fiber and gain covering solution, and
n 1＞ n 3 
With
Be respectively pumping light at dye solution and the absorption coefficient in silica fiber,
η p Ratio for the intensity of pumping light outside optical fiber and inside and outside the optical fiber.
4. according to claim 2 or 3 described multiband Whispering-gallery-mode fiber lasers based on PDMS, it is characterized in that: under the condition of said evanescent wave optical pumping, the total losses of Whispering-gallery-mode laser are obtained by (2) formula in the cylindrical microcavity:
In the formula,
With
Represent Whispering-gallery-mode laser respectively at gain covering solution and the absorption coefficient in optical fiber,
η WGMBe the evanscent field of Whispering-gallery-mode laser and the ratio of the volume of total mould field.
5. according to claim 2 or 3 described multiband Whispering-gallery-mode fiber lasers based on PDMS, it is characterized in that: described laser is obtained by (3) formula to the maximum length that produces along fiber axis:
In the formula,
Z MaxBe the maximum generation length of laser,
With
Be respectively the maximum pumping energy that produces the length place of fiber end face place and laser.
6. the multiband Whispering-gallery-mode fiber laser based on PDMS according to claim 2, it is characterized in that: the quantity of described optical fiber groove and the quantity of cuneiform optical fiber are complementary.
7. according to claim 2 or 3 described multiband Whispering-gallery-mode fiber lasers, it is characterized in that: the low-refraction that segmentation is inserted in the described optical fiber groove based on PDMS
n 3Gain covering medium solution be in ethanolic solution or ethylene glycol solution or ethanol and the ethylene glycol mixed solution of rhodamine 6G, rhodamine B, rhodamine 610, rhodamine 640, cumarin 500, talan 420 and LDS698 any one or more than one.
8. the multiband Whispering-gallery-mode fiber laser based on PDMS according to claim 7 is characterized in that: the ethanolic solution of rhodamine 6G, rhodamine B, rhodamine 610, rhodamine 640, cumarin 500, talan 420 and LDS698 or ethylene glycol solution or ethanol and ethylene glycol mixed solution concentration are 1 * 10
-4～4 * 10
-2Mol/L.
9. the multiband Whispering-gallery-mode fiber laser based on PDMS according to claim 7 is characterized in that: the ethanolic solution of rhodamine 6G, rhodamine B, rhodamine 610, rhodamine 640, cumarin 500, talan 420 and LDS698 or ethylene glycol solution or ethanol and ethylene glycol mixed solution concentration are 8 * 10
-4～8 * 10
-3Mol/L.
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| CN108574199A (en) * | 2018-04-18 | 2018-09-25 | 云南大学 | A kind of fluorescence resonance energy transfer optofluidic laser and its preparation method and application |
| CN110095837A (en) * | 2019-06-03 | 2019-08-06 | 呜啦啦(广州)科技有限公司 | A kind of novel light element and preparation method thereof |
| CN110530609A (en) * | 2019-08-28 | 2019-12-03 | 中国科学院合肥物质科学研究院 | The device and method for surveying FP transmittance curve using Whispering-gallery-mode laser light source |
| CN111685755A (en) * | 2020-05-29 | 2020-09-22 | 华南理工大学 | AgNWs-PDMS composite flexible conductive optical fiber micro-lens and preparation method thereof |
| CN112393819A (en) * | 2020-11-18 | 2021-02-23 | 海南大学 | Temperature sensor |
| CN113314933A (en) * | 2021-05-11 | 2021-08-27 | 温州激光与光电子协同创新中心 | Whispering gallery mode microcavity antiresonance laser |
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| CN105490166A (en) * | 2016-01-21 | 2016-04-13 | 苏州苏大维格光电科技股份有限公司 | Micro-cavity laser array and visible light photometer comprising micro-cavity laser array |
| CN105490166B (en) * | 2016-01-21 | 2019-07-05 | 苏州苏大维格光电科技股份有限公司 | Micro-cavity laser array and visible light photometer including it |
| CN108574199A (en) * | 2018-04-18 | 2018-09-25 | 云南大学 | A kind of fluorescence resonance energy transfer optofluidic laser and its preparation method and application |
| CN110095837A (en) * | 2019-06-03 | 2019-08-06 | 呜啦啦(广州)科技有限公司 | A kind of novel light element and preparation method thereof |
| CN110095837B (en) * | 2019-06-03 | 2023-08-29 | 呜啦啦(广州)科技有限公司 | Novel photoconductive element and manufacturing method thereof |
| CN110530609A (en) * | 2019-08-28 | 2019-12-03 | 中国科学院合肥物质科学研究院 | The device and method for surveying FP transmittance curve using Whispering-gallery-mode laser light source |
| US11313760B2 (en) | 2019-08-28 | 2022-04-26 | Hefei Institute of Physical Science, Chinese Academy of Sciences | Device and method for measuring transmittance curve of Fabry-Parot using whispering gallery mode laser source |
| CN111685755A (en) * | 2020-05-29 | 2020-09-22 | 华南理工大学 | AgNWs-PDMS composite flexible conductive optical fiber micro-lens and preparation method thereof |
| CN112393819A (en) * | 2020-11-18 | 2021-02-23 | 海南大学 | Temperature sensor |
| CN113314933A (en) * | 2021-05-11 | 2021-08-27 | 温州激光与光电子协同创新中心 | Whispering gallery mode microcavity antiresonance laser |
| CN113314933B (en) * | 2021-05-11 | 2022-08-16 | 温州激光与光电子协同创新中心 | Whispering gallery mode microcavity antiresonance laser |
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