CN101521349A - White light quantum dot fibre laser - Google Patents
White light quantum dot fibre laser Download PDFInfo
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- CN101521349A CN101521349A CN200910097188A CN200910097188A CN101521349A CN 101521349 A CN101521349 A CN 101521349A CN 200910097188 A CN200910097188 A CN 200910097188A CN 200910097188 A CN200910097188 A CN 200910097188A CN 101521349 A CN101521349 A CN 101521349A
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- quantum dot
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- white light
- optical fiber
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- 239000000835 fiber Substances 0.000 title claims abstract description 41
- 239000002096 quantum dot Substances 0.000 title claims abstract description 38
- 239000004065 semiconductor Substances 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 claims description 9
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 claims description 5
- 239000003086 colorant Substances 0.000 claims 1
- 239000013307 optical fiber Substances 0.000 abstract description 21
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000011521 glass Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000005284 excitation Effects 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000295 emission spectrum Methods 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000001307 laser spectroscopy Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 238000000103 photoluminescence spectrum Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明涉及一种白光量子点光纤激光器，它包括：第一光纤光栅(1)、半导体蓝光激光器(2)、波分复用器(3)、量子点掺杂光纤(4)、第二光纤光栅(5)和激光输出端(6)。波分复用器的信号输入端接第一光纤光栅1，泵浦输入端接半导体蓝光激光器，输出端接量子点掺杂光纤，量子点掺杂光纤再接第二光纤光栅5的反射端，透射端为激光输出端。由于不同尺寸量子点受蓝光激发时激发光出现不同程度的红移，在玻璃光纤中将不同尺寸量子点按一定比例掺杂，可实现白光输出。本发明结构简单、易于制造、能够实现白光激光输出，可广泛用于光纤技术的各个领域。
The invention relates to a white light quantum dot fiber laser, which comprises: a first optical fiber grating (1), a semiconductor blue light laser (2), a wavelength division multiplexer (3), a quantum dot doped optical fiber (4), a second optical fiber Grating (5) and laser output terminal (6). The signal input terminal of the wavelength division multiplexer is connected to the first fiber grating 1, the pump input terminal is connected to the semiconductor blue light laser, the output terminal is connected to the quantum dot-doped optical fiber, and the quantum dot-doped optical fiber is connected to the reflection end of the second optical fiber grating 5, The transmission end is the laser output end. Because quantum dots of different sizes are excited by blue light, the excitation light will be red-shifted to different degrees, and quantum dots of different sizes are doped in a certain proportion in the glass optical fiber to achieve white light output. The invention has simple structure, is easy to manufacture, can realize white light laser output, and can be widely used in various fields of optical fiber technology.
Description
Technical field
The present invention relates to a kind of white light quantum dot fibre laser, belong to the fiber laser field, relate in particular to the quantum dot fibre laser field.
Background technology
The general device of the laser of emission white light is comparatively complicated, white light laser need adopt neodymium doped yttrium aluminium garnet laser acquisition 1064nm pulses such as acousto-optic Q modulation, the pump parametric oscillator obtains wavelength 1535nm laser then, by 1064nm and 1535nm laser are carried out and frequently obtain the output of 628nm laser, by 628nm and 1535nm laser are obtained 446nm laser with frequency, by the 1064nm frequency multiplication being obtained 532nm laser, final synthesize white light output.The microstructured optical fibers white light laser generator that proposes as people such as Wang Qingyue needs self-starting mode-locked laser, microstructured optical fibers and a plurality of coupled lens etc. in addition; Wish that the white light laser that generation rather waits the people to propose need adopt the optical superlattice of different structure cascade to produce accurate white light output as nonlinear crystal, complex structure and the ratio that need strictly regulate temperature control RGB light.
White light laser has purposes very widely at aspects such as optical communication, laser spectroscopy, laser biology, optics " light pincers " and illumination amusements continuously, has also established foundation stone for optical information systematic research of future generation simultaneously.
Because the discrete characteristic of energy level of quantum dot and the quantum confinement benefit and the small-size effect of quantum dot, its emission peak can carry out tuning according to the quantum dot size, and this advantage is to make it become the effective means that produces the continuous spectrum white light.Quantum dot is a kind of potential nanoscale semiconductor, has the wide absorption spectrum and the emission spectrum of broad, and can come tuning peak luminous wavelength by its size; Quantum dot has significant technological advantage, compares with traditional generation red, green, blue look fluorescent material, and quantum dot making temperature is lower, and Production Time is also shorter, particularly by tuning quantum dot size, can control its emission wavelength.
Advance optical fiber with different size is quantum dot-doped, excite the different size quantum dot, produce multiple coloured light, constitute reflection cavity by fiber grating by the semiconductor blue laser; The quantum dot fibre laser of realization white light output has simple in structure, is easy to make, can realizes characteristics such as white light laser output, can be widely used in the every field of optical fiber technology.
Summary of the invention
The object of the present invention is to provide a kind of white light quanta point laser.This laser not only can produce broadband, super smooth white light laser, and has characteristics such as simple in structure, that running is stable.
The present invention is achieved through the following technical solutions: comprise first fiber grating, semiconductor blue laser, wavelength division multiplexer, quantum dot-doped optical fiber, second fiber grating and laser output.The signal input part of wavelength division multiplexer connects first fiber grating, pumping input termination semiconductor blue laser, and the quantum dot-doped optical fiber of output termination, quantum dot-doped optical fiber connects the reflection end of second fiber grating again, and the transmission end is a laser output.
Operation principle of the present invention is: the blue light that the semiconductor blue laser sends incides as gain media and the quanta point optical fiber of mixing that produces the multiple coloured light in visible range (red, yellow, green, blue etc.) by wavelength division multiplexer as pump light.The light of different peak wavelengths can take place when blue-light excited in the different size quantum dot, the quantum dot of these different sizes is mixed in the glass optical fiber by a certain percentage, just the visible light of these peak wavelengths can be produced, just continuous, smooth white light can be obtained after the mixing; Through the reflection of two fiber gratings and repeatedly gain, can obtain continuous, super smooth white light laser at laser output.
Description of drawings
Fig. 1 is the schematic diagram of a kind of white light quantum dot fibre laser of the present invention;
The spectrogram of Fig. 2 different size quantum dot when blue-light excited;
Embodiment
With reference to Fig. 1, the device of white light quantum dot fibre laser of the present invention comprises first fiber grating 1, semiconductor blue laser 2, wavelength division multiplexer 3, quantum dot-doped optical fiber 4, second fiber grating 5 and laser output 6.The signal input part of wavelength division multiplexer connects first fiber grating, pumping input termination semiconductor blue laser, and the quantum dot-doped optical fiber of output termination, quantum dot-doped optical fiber connects the reflection end of second fiber grating again, and the transmission end is a laser output.Quantum dot in the wherein quantum dot-doped optical fiber can adopt the CdSe/ZnSe of nucleocapsid structure or the quantum dot of CdSe/ZnS or CdSe/CdS or CdS/ZnS or CdS/HgS.The size of quantum dot is 2nm～6nm scope.First fiber grating is that the resonance wavelength that satisfies of a series of (at least three) is positioned at the broadband Bragg reflector that red, green, blue typical wavelengths Fiber Bragg Grating FBG constitutes, and second fiber grating adopts the chirped fiber grating of a series of (at least three).Fig. 2 describes is that the CdSe/ZnSe quantum dot of different size nucleocapsid structure is subjected to the photoluminescence spectra figure when blue-light excited.As can be seen from the figure, as when blue-light excited, the CdSe/ZnSe quantum dot of nucleocapsid structure size be 2.2,2.7,3.2,3.4,3.7,3.8,4.0 and during 4.8nm respectively emission peak wavelength lay respectively at 510,540,555,580,585,590,595 and 620nm.Therefore, in this example size is respectively that three kinds of nucleocapsid structure CdSe/ZnSe of 2.2nm～3nm and 4nm～5nm and 4nm～5nm scope are quantum dot-doped to advance silica fiber, obtain blue light, green glow and ruddiness, obtain white light after three kinds of coloured light mix, output white light laser behind the feedback oscillator.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910097188A CN101521349A (en) | 2009-03-26 | 2009-03-26 | White light quantum dot fibre laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910097188A CN101521349A (en) | 2009-03-26 | 2009-03-26 | White light quantum dot fibre laser |
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| Publication Number | Publication Date |
|---|---|
| CN101521349A true CN101521349A (en) | 2009-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910097188A Pending CN101521349A (en) | 2009-03-26 | 2009-03-26 | White light quantum dot fibre laser |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107147003A (en) * | 2017-05-27 | 2017-09-08 | 杭州电子科技大学 | Mode-locked fiber laser with lead selenide quantum dots as gain medium |
| CN109167254A (en) * | 2018-10-15 | 2019-01-08 | 南京邮电大学 | Include silver selenide/selenizing silver-colored zinc core-shell quanta dots vertical cavity surface emitting laser and preparation method thereof |
| CN110702264A (en) * | 2019-10-31 | 2020-01-17 | 浙江光塔节能科技有限公司 | Detection system for quantum dot optical fiber illumination |
| CN111129929A (en) * | 2020-01-09 | 2020-05-08 | 浙江大学 | Multi-wavelength fiber laser based on multi-granularity quantum dot doping and design method thereof |
| WO2020237984A1 (en) * | 2019-05-29 | 2020-12-03 | 深圳市星汉激光科技有限公司 | White light laser source |
-
2009
- 2009-03-26 CN CN200910097188A patent/CN101521349A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107147003A (en) * | 2017-05-27 | 2017-09-08 | 杭州电子科技大学 | Mode-locked fiber laser with lead selenide quantum dots as gain medium |
| CN109167254A (en) * | 2018-10-15 | 2019-01-08 | 南京邮电大学 | Include silver selenide/selenizing silver-colored zinc core-shell quanta dots vertical cavity surface emitting laser and preparation method thereof |
| WO2020237984A1 (en) * | 2019-05-29 | 2020-12-03 | 深圳市星汉激光科技有限公司 | White light laser source |
| CN110702264A (en) * | 2019-10-31 | 2020-01-17 | 浙江光塔节能科技有限公司 | Detection system for quantum dot optical fiber illumination |
| CN110702264B (en) * | 2019-10-31 | 2024-09-17 | 浙江光塔安全科技有限公司 | Detection system for quantum dot optical fiber illumination |
| CN111129929A (en) * | 2020-01-09 | 2020-05-08 | 浙江大学 | Multi-wavelength fiber laser based on multi-granularity quantum dot doping and design method thereof |
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Open date: 20090902 |