CN211821767U - Light source based on fluorescent glass-ceramic optical fiber - Google Patents
Light source based on fluorescent glass-ceramic optical fiber Download PDFInfo
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- CN211821767U CN211821767U CN202020337137.7U CN202020337137U CN211821767U CN 211821767 U CN211821767 U CN 211821767U CN 202020337137 U CN202020337137 U CN 202020337137U CN 211821767 U CN211821767 U CN 211821767U
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- 239000002241 glass-ceramic Substances 0.000 title claims abstract description 75
- 239000013307 optical fiber Substances 0.000 title claims abstract description 63
- 239000000835 fiber Substances 0.000 claims abstract description 28
- 238000005086 pumping Methods 0.000 claims abstract description 14
- 230000005284 excitation Effects 0.000 claims abstract description 7
- 238000005253 cladding Methods 0.000 claims description 15
- 239000004065 semiconductor Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 abstract description 23
- 239000011521 glass Substances 0.000 abstract description 10
- 239000003365 glass fiber Substances 0.000 description 10
- 238000001228 spectrum Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 150000002910 rare earth metals Chemical class 0.000 description 4
- 238000000695 excitation spectrum Methods 0.000 description 3
- 229910052693 Europium Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 2
- 239000006112 glass ceramic composition Substances 0.000 description 2
- 239000013080 microcrystalline material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 108010043121 Green Fluorescent Proteins Proteins 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000075 oxide glass Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Abstract
The utility model discloses a light source based on fluorescence microcrystalline glass optic fibre, include: a fluorescent glass-ceramic optical fiber; and the pumping light source is arranged beside the fluorescent glass-ceramic optical fiber and used for providing a light source for the excitation of the fluorescent glass-ceramic optical fiber, and the side of the fluorescent glass-ceramic optical fiber is used as an output end. The utility model discloses utilize fluorescence glass ceramic optic fibre to there is bigger space to realize the output of higher luminance fluorescence, thereby makes this light source can pump fluorescent material high-efficiently steadily and produce visible light especially yellow green light.
Description
Technical Field
The utility model belongs to the technical field of the light source, concretely relates to light source based on fluorescence glass ceramic optic fibre.
Background
Yellow-green and green-yellow light sources have great market potential in display technology and medical applications. The yellow-green and green-yellow light sources of the low-cost scheme in the current market are mainly generated by pumping yellow-green CeYAG/LuAG fluorescent powder by laser or LED blue light, but the difficulty is high due to direct pumping by a gain material, the efficiency is low, and the emitted yellow-green and green-yellow light is unstable.
SUMMERY OF THE UTILITY MODEL
In order to overcome the technical defect, the utility model provides a light source based on fluorescence glass ceramic optic fibre, it can pump fluorescent material steadily and produce visible light especially yellow green light.
In order to solve the above problem, the utility model discloses realize according to following technical scheme:
a fluorescent glass-ceramic fiber based light source comprising:
a fluorescent glass-ceramic optical fiber;
and the pumping light source is arranged beside the fluorescent glass-ceramic optical fiber and used for providing a light source for the excitation of the fluorescent glass-ceramic optical fiber, and the other side of the fluorescent glass-ceramic optical fiber is used as an output end.
Compared with the prior art, the utility model discloses a light source has following beneficial effect: the optical fiber has excellent heat dissipation characteristic, so that the fluorescent microcrystalline glass optical fiber has larger space to realize the output of fluorescence with higher brightness, and the light source can efficiently and stably pump the fluorescent material to generate visible light, particularly yellow green light.
As a further improvement of the utility model, the fluorescent glass-ceramic fiber is a single-core fluorescent glass-ceramic fiber, which takes air as a cladding.
As a further improvement of the utility model, the fluorescent microcrystalline glass fiber is a multi-cladding fluorescent microcrystalline glass fiber, and the refractive index of the cladding of the multi-cladding fluorescent microcrystalline glass fiber is 1.5-1.85.
As a further improvement of the present invention, the pump light source is a single-end pump, which is disposed on one side of the fluorescent glass-ceramic fiber, and the other side of the fluorescent glass-ceramic fiber is used as an output end.
As a further improvement of the utility model, the end face of the fluorescent glass-ceramic optical fiber is plated with a total reflection film layer.
As a further improvement of the present invention, the pump light source is a double-end-face pump, which is respectively disposed at both sides of the fluorescent glass-ceramic fiber, and the both sides of the fluorescent glass-ceramic fiber are used as the output end.
As a further improvement of the present invention, the pump light source is provided with a coupler.
As a further improvement of the present invention, the pump light source is laser.
As a further improvement of the present invention, the pumping light source is a semiconductor laser diode with multiple arrays or a semiconductor light emitting diode with tail fiber output.
Drawings
The following detailed description of embodiments of the invention is provided with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of the fluorescence of a microcrystalline glass fiber according to an embodiment;
FIG. 2 is a schematic diagram of an end face output of the fluorescent glass-ceramic optical fiber according to the first embodiment;
FIG. 3 is a schematic view of a light source according to an embodiment;
FIG. 4 is a spectrum (green excitation spectrum) of a blue laser pumped fluorescent microcrystalline glass fiber light source according to the first embodiment;
FIG. 5 shows an output spectrum (red excitation spectrum) of a blue laser pumped fluorescent glass-ceramic fiber light source according to an embodiment;
FIG. 6 is a spectrum (yellow excitation spectrum) of an output of a blue laser pumped fluorescent glass-ceramic fiber light source according to the first embodiment;
FIG. 7 is a schematic view of an end face output of the fluorescent glass-ceramic optical fiber according to the second embodiment;
fig. 8 is a schematic view of a light source according to the third embodiment.
Description of the labeling: 1-fluorescent glass-ceramic optical fiber; 11-a core; 12-a cladding layer; 13-a total reflection film layer; 14-light emitting point light source 2-pump light source; 21-laser; 3-a coupled output; 4-an output end; 5-coupler.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Example one
The embodiment discloses a light source based on a fluorescent glass-ceramic optical fiber, which comprises: the fluorescent microcrystalline glass fiber 1 and the pump light source 2, wherein the fluorescent microcrystalline glass fiber 1 takes oxide glass as a substrate and is doped with a rare earth component fluorescent material, the rare earth component fluorescent material is a Eu fluorescent material or a Ce: YAG fluorescent material, and the fluorescent microcrystalline glass fiber 1 is of a cylindrical structure; the pumping light source 2 is arranged beside the fluorescent glass-ceramic optical fiber 1 and used for providing a light source for the excitation of the fluorescent glass-ceramic optical fiber 1, and the other side of the fluorescent glass-ceramic optical fiber 1 opposite to the pumping light source 2 is an output end.
In the above embodiment, the fluorescent glass-ceramic optical fiber 1 is a single-core fluorescent glass-ceramic optical fiber having air as a cladding. As shown in fig. 2, the doped fluorescent microcrystalline material is excited by the pump light as the light source 14 of the light emitting point, and can form a lambertian body light source to emit light all around, and possible light transmission paths are shown as light rays 101, 102, 103, 104 and 105 in the figure. The light rays 101 and 102 are respectively fluorescence escaping from the fluorescent glass-ceramic optical fiber 1, and because the incident angle of the fluorescence escaping from the fluorescent glass-ceramic optical fiber 1 is smaller than the total reflection angle of the fluorescent glass-ceramic optical fiber 1 and the air dielectric layer, the fluorescence escaping from the fluorescent glass-ceramic optical fiber 1 can not be totally reflected into the fluorescent glass-ceramic optical fiber 1. As shown in fig. 2, the total internal reflection angle β of the fluorescent glass-ceramic optical fiber 1 having a high refractive index of 1.8 is arcsin (n)2/n1) Arcsin (1/1.8) ═ 33.75. In fig. 1, when the emitted fluorescent light is greater than 33.75 degrees of total reflection, light rays 104 and 105 will be totally internally reflected multiple times to output ends 106 and 107, and the final partial light rays are output. Whereas the fluorescence light ray is less than 33.75 degrees of total reflection angle, for example, light rays 101 and 102 respectively escape from the side of the fluorescent glass-ceramic optical fiber 1. The fluorescent light 103 is a fluorescent microcrystalThe portion absorbed by the glass material emits fluorescent light.
In FIG. 2, ray 108 is the escaping fluorescent light ray and 109 is the final total internal reflection output fluorescent light. n is2Is the refractive index of the cladding or of air, n1Is the refractive index of the core of the fluorescent glass-ceramic optical fiber. According to Snell's law, we can obtain the Numerical Aperture (Numerical Aperture) NA of the optical fiber, and the formula is
When the internal angle of the output end of the fluorescent glass-ceramic optical fiber 1 is smaller than the total internal reflection angle, namely 90-beta is less than or equal to beta, the light can output the fluorescent glass-ceramic optical fiber 1, and the output angle in the air is +/-90 degrees. However, according to the design of the high-refractive-index (1.8) fluorescent glass-ceramic optical fiber material, all the light rays totally internally reflected at the side surface cannot be output from the end face of the optical fiber, and the actual output is only about 16% of the total generated fluorescence.
In the above embodiment, as shown in fig. 3, the pumping light source 2 is a single-end-face pump, and is disposed at one side of the fluorescent glass-ceramic fiber 1, and the other side of the fluorescent glass-ceramic fiber 1 is used as an output end.
In the above embodiment, the pumping light source 2 is provided with the coupler 5, and the coupler 5 may be a semiconductor laser coupler, which is not limited to fiber coupling-out, but may also be spatial coupling-out.
In the above embodiment, the end surface of the fluorescent glass-ceramic optical fiber 1 is plated with a total reflection film layer. The fluorescence is output from a coupling output end 3 at one side of the fluorescent glass-ceramic optical fiber 1, and the total reflection film layer is used for reflecting all the fluorescence output from the coupling output end 3 to an output end 4 at the other side of the fluorescent glass-ceramic optical fiber 1 for output. The use of index-matched coupler 5 serves to achieve higher fluorescence output power due to the low coupling-out efficiency resulting from the high index of refraction.
In the above embodiment, the pump light source 2 is a laser.
In the above embodiment, the pumping light source 2 is a multi-array semiconductor laser diode or a pigtailed semiconductor light emitting diode, which may be implemented by a semiconductor laser.
In the above-described embodiments, the pumping light source 2 may have different wavelengths, such as 365nm, 395nm, 405nm, 415nm, 445nm, 450nm, 455nm, and the like.
FIG. 4 shows the spectrum of the fluorescent glass-ceramic material using a 450nm laser and excited green-yellow light. The fluorescent material can be green fluorescent material doped with europium (Eu) rare earth to form green-yellow fluorescence excitation (the peak value is 540 nanometers, and the bandwidth is 100 nanometers).
FIG. 5 shows the spectrum of the fluorescent glass-ceramic material using a 450nm laser and excited red light. The fluorescent material can use red fluorescent material doped with europium (Eu) rare earth to form red fluorescence excitation (the peak value is 585 nanometers, and the bandwidth is 100 nanometers).
FIG. 6 shows the spectrum of the fluorescent glass-ceramic optical fiber using a 450nm laser and excited yellow-green light. The fluorescent material can use yellow fluorescent excitation (with a peak value of 585 nm and a bandwidth of 100 nm) made of a Ce: YAG fluorescent material.
Example two
This example discloses another light source based on a fluorescent glass-ceramic fiber, as shown in fig. 7, which is different from the first example in that: the fluorescent microcrystalline glass optical fiber 1 is a multi-cladding fluorescent microcrystalline glass optical fiber, and the refractive index of a cladding of the multi-cladding fluorescent microcrystalline glass optical fiber is 1.5-1.85.
The microcrystalline glass material doped with the fluorescent material is used as the fiber core 11 of the fluorescent microcrystalline glass fiber 1, the microcrystalline glass material not doped with the fluorescent material is used as the cladding 12 of the fluorescent microcrystalline glass fiber 1, and the refractive indexes of the two are similar. The design is beneficial to the drawing optimization of the fluorescent glass-ceramic optical fiber 1, and simultaneously, other materials are used as the cladding of the fluorescent glass-ceramic optical fiber to form the reliable fluorescent glass-ceramic optical fiber 1 with small bending radius. The doped fluorescent microcrystalline material is used as a light emitting point light source 14 and is excited by pump light, and 111, 112 and 113 are light rays of the side fluorescent microcrystalline glass optical fiber 1 and light rays absorbed by the internal material of the fluorescent microcrystalline glass optical fiber 1 respectively. 114, and 115 are fluorescent light that is totally internally reflected toward both sides and achieves end light output.
In FIG. 2, lightLine 108 is the escaping fluorescent light ray and 109 is the final total internal reflection output fluorescent light. n is2Is the refractive index of the cladding, n1Is the refractive index of the core of the fluorescent glass-ceramic optical fiber. According to Snell's law, we can obtain the Numerical Aperture (Numerical Aperture) NA of the optical fiber, and the formula is
When the internal angle of the output end of the fluorescent glass-ceramic optical fiber 1 is smaller than the total internal reflection angle, namely 90-beta is less than or equal to beta, the light can output the fluorescent glass-ceramic optical fiber 1, and the output angle in the air is +/-90 degrees. However, according to the design of the high-refractive-index (1.8) fluorescent glass-ceramic optical fiber material, all the light rays totally internally reflected at the side surface cannot be output from the end face of the optical fiber, and the actual output is only about 16% of the total generated fluorescence.
EXAMPLE III
This example discloses another light source based on a fluorescent glass-ceramic fiber, as shown in fig. 8, which is different from the first example in that: the pumping light source 2 is a double-end-face pump and is respectively arranged at two sides of the fluorescent glass-ceramic optical fiber 1, and the two sides of the fluorescent glass-ceramic optical fiber 1 are used as output ends 4. The pumping light source 2 is provided with a coupler 5, the coupler 5 can be a semiconductor laser coupler, the semiconductor laser coupler is not limited to optical fiber coupling output, and can also be space coupling output, and higher fluorescence output can be realized. The embodiment is suitable for application scenes with double-end fluorescence output, such as an intelligent headlamp light source at the front end of an automobile.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.
Claims (9)
1. A light source based on a fluorescent glass-ceramic fiber, comprising:
a fluorescent glass-ceramic optical fiber;
and the pumping light source is arranged beside the fluorescent glass-ceramic optical fiber and used for providing a light source for the excitation of the fluorescent glass-ceramic optical fiber, and the other side of the fluorescent glass-ceramic optical fiber is used as an output end.
2. The light source according to claim 1, wherein the fluorescent glass-ceramic optical fiber is a single-core fluorescent glass-ceramic optical fiber having air as a cladding.
3. The light source of claim 1, wherein the fluorescent glass-ceramic fiber is a multi-clad fluorescent glass-ceramic fiber, and a cladding of the multi-clad fluorescent glass-ceramic fiber has a refractive index of 1.5-1.85.
4. The light source of claim 1, wherein the pump light source is a single-end pump and is disposed on one side of the fluorescent glass-ceramic fiber, and the other side of the fluorescent glass-ceramic fiber is used as an output end.
5. The light source according to claim 4, wherein the end face of the fluorescent glass-ceramic optical fiber is coated with a total reflection film layer.
6. The light source of claim 1, wherein the pump light source is a double-end-face pump and is disposed on two sides of the fluorescent glass-ceramic fiber, and the two sides of the fluorescent glass-ceramic fiber are used as output ends.
7. A light source as claimed in claim 4 or 6, characterized in that the pump light source is provided with a coupler.
8. The light source of claim 1, wherein the pump light source is a laser.
9. The light source of claim 1, wherein the pump light source is a multi-array semiconductor laser diode or a pigtailed semiconductor light emitting diode.
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| CN202020337137.7U CN211821767U (en) | 2020-03-17 | 2020-03-17 | Light source based on fluorescent glass-ceramic optical fiber |
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| CN202020337137.7U CN211821767U (en) | 2020-03-17 | 2020-03-17 | Light source based on fluorescent glass-ceramic optical fiber |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111412392A (en) * | 2020-03-17 | 2020-07-14 | 佛山市辉康光电技术有限公司 | A light source based on fluorescent glass-ceramic fiber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111412392A (en) * | 2020-03-17 | 2020-07-14 | 佛山市辉康光电技术有限公司 | A light source based on fluorescent glass-ceramic fiber |
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Effective date of registration: 20221221 Address after: 453014 No. 9, Dongzhuo Road, Hongqi District, Xinxiang City, Henan Province (No. 1 and No. 2 plants of Xindong Optoelectronic Information Industrial Park) (east of 107) Patentee after: HENAN BAIHE SPECIAL OPTICAL RESEARCH INSTITUTE CO.,LTD. Address before: 528000 Room 726, 7/F, Building B, No. 2, Lingnan Avenue South, Lecong Town, Shunde District, Foshan City, Guangdong Province Patentee before: FOSHAN HUIKANG PHOTOELECTRIC TECHNOLOGY Co.,Ltd. |