CN204696441U - Axial pumping row ripple amplifies liquid-core optical fibre laser - Google Patents
Axial pumping row ripple amplifies liquid-core optical fibre laser Download PDFInfo
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- CN204696441U CN204696441U CN201520390453.XU CN201520390453U CN204696441U CN 204696441 U CN204696441 U CN 204696441U CN 201520390453 U CN201520390453 U CN 201520390453U CN 204696441 U CN204696441 U CN 204696441U
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Abstract
The utility model axial pumping row ripple amplifies liquid-core optical fibre laser, belongs to laser technology field.The shortcoming high for the loss of existing dye laser laser energy, conversion efficiency is low, unstable with the frequency of stimulated radiation, there is radiation wavelength drifting problem, devising one utilizes liquid-core optical fibre axial pumping laser and Stokes and anti-Stokes light to be intercoupled, and utilizes luminescent dye molecule to be mixed in the core operation material of liquid-core optical fibre as fluorescent seeds simultaneously and strengthens stimulated Raman radiation.Basic mode laser is obtained by outer light path aperture after axial pumping row ripple amplification liquid-core optical fibre laser in the utility model sends pumping laser by pumping laser light source, utilizing coupled lens to export obtaining tunable stimulated Raman radiation in basic mode laser coupled to liquid-core optical fibre, after carrying out light-splitting processing finally by transmission grating and/or large index prism, completing Laser output process.
Description
Technical field
The utility model belongs to laser technology field.
Background technology
Modern precision secondary industry and universities' research institutes teaching and scientific research all have demand widely to tunable LASER Light Source, and the multi-wavelength of axial pumping row ripple amplification liquid-core optical fibre laser, the removable feature of core operation material have just met the demand in market.But laser energy loss is high, conversion efficiency is low shortcoming that common dye laser exists.And the frequency of existing dye laser stimulated radiation is unstable, there is radiation wavelength drift.
Utility model content
The purpose of this utility model is the problem that laser energy loss is high, conversion efficiency is low, the frequency of stimulated radiation instability exists radiation wavelength drift solving dye laser.
The utility model provides a kind of axial pumping row ripple and amplifies liquid-core optical fibre laser, by pumping laser light source 1, outer light path aperture 2, coupled lens 6, liquid-core optical fibre 3, transmission grating 4 and/or large index prism 5 form, basic mode laser is obtained by outer light path aperture 2 after sending pumping laser by pumping laser light source 1, coupled lens 6 is utilized to export obtaining tunable stimulated Raman radiation in basic mode laser coupled to liquid-core optical fibre 3, finally by incisure density be 600 ~ 700 transmission grating 4 and/or the prism 5 of refractive index more than 1.70 carry out light-splitting processing after complete Laser output process.Fill the organic liquid that the refractive index of having dissolved fluorescent dye is greater than quartz in described liquid-core optical fibre 3, and wherein the concentration of fluorescent dye should 10
-5to 10
-7between M.
Described coupled lens 6 is preferably coated with the lens of 532nm anti-reflection film.Containing C in the molecule of fluorescent dye
10~ C
30conjugation linear polyene functional group, wherein preferably beta-carotene, lycopene or canthaxanthin, fills in liquid-core optical fibre and can reduce absorption loss to pumping laser greatly containing the fluorescent dye of conjugation linear polyene functional group, improve laser-conversion efficiency.
The beneficial effects of the utility model:
1, achieve pump light, Stokes and anti-Stokes light are intercoupled;
2, the laser energy loss of axial pumping row ripple amplification liquid-core optical fibre laser provided by the utility model is low, conversion efficiency is high;
, there is not radiation wavelength drift in 3, the frequency stabilization of stimulated radiation.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment 1 device schematic diagram;
Fig. 2 is the utility model embodiment 2 device schematic diagram;
Fig. 3 is the utility model embodiment 3 device schematic diagram.
Embodiment
Embodiment 1
As shown in Figure 1, in the present embodiment, axial pumping row ripple amplifies liquid-core optical fibre laser, is made up of pumping laser light source 1, outer light path aperture 2, coupled lens 6, liquid-core optical fibre 3, transmission grating 4; Basic mode laser is obtained by outer light path aperture 2 after sending pumping laser by pumping laser light source 1, utilize coupled lens 6 that tunable stimulated Raman radiation in basic mode laser coupled to liquid-core optical fibre 3, will be obtained to export, after carrying out light-splitting processing finally by the incisure density transmission grating 4 that is 600 ~ 700, complete Laser output process.Wherein, the organic liquid that the refractive index of having dissolved fluorescent dye is greater than quartz is filled in described liquid-core optical fibre 3.Fluorescent dye is trans lycopene.
Embodiment 2
As shown in Figure 2, in the present embodiment, axial pumping row ripple amplifies liquid-core optical fibre laser, is made up of pumping laser light source 1, outer light path aperture 2, coupled lens 6, liquid-core optical fibre 3, large index prism 5; Basic mode laser is obtained by outer light path aperture 2 after sending pumping laser by pumping laser light source 1, utilizing coupled lens 6 to export obtaining tunable stimulated Raman radiation in basic mode laser coupled to liquid-core optical fibre 3, after carrying out light-splitting processing finally by the prism 5 of refractive index more than 1.70, completing Laser output process.Wherein, the organic liquid that the refractive index of having dissolved fluorescent dye is greater than quartz is filled in described liquid-core optical fibre 3.Fluorescent dye is trans lycopene and add the All-cislycopene that iodine obtains and combine.
Embodiment 3
Can by embodiment 1 with in embodiment 2 large index prism 5 and transmission grating 4 combinationally use reinforcement spectrophotometric result.Fig. 3 is the schematic diagram of a kind of compound mode wherein, basic mode laser is obtained by outer light path aperture 2 after sending pumping laser by pumping laser light source 1, utilizing coupled lens 6 to export obtaining tunable stimulated Raman radiation in basic mode laser coupled to liquid-core optical fibre 3, after the prism 5 more than 1.70 carries out light-splitting processing finally by transmission grating 4 and refractive index, completing Laser output process.
In the utility model, coupled lens can adopt the lens being coated with 532nm anti-reflection film to strengthen the transmitance of laser, and develop skill effect.
The utility model combines the advantage of the coaxial pumping of dye laser, and the coupling efficiency of pumping laser and liquid-core optical fibre is reached maximum, utilizes dye fluorescence or biomolecule fluorescence to reach the effect of the stimulated Raman radiation strengthening liquid; The operating characteristic that the interaction distance of light in fiber laser and operation material is long is combined with the cumulative function of optical fiber to light simultaneously, and utilize the stimulated Raman radiation of core material (being namely filled in the organic liquid in liquid-core optical fibre and fluorescent dye) to reach upper conversion to pump light and lower conversion.Because the wavelength of stimulated Raman scattering is relevant to vibration level between intramolecular atom, therefore the laser frequency of stimulated Raman radiation is very stable, overcomes the shortcoming existing for dye laser.
Conjugation linear polyene molecule has many photoluminescent properties, and has in a liquid multiple different " conjugate length " because of it, and has multiple fluorescent belt to superpose, and broadens fluorescent belt length.And because the interaction of excited molecule and polyene molecule can make the non-linear susceptibility of polyene molecule increase considerably, and then enrich fluorescent band.The polyene molecule of several different chain length has different broadband fluorescence, and in general, chain is longer, and fluorescence gets over red shift.Therefore, be no matter select a kind of polyene molecule, or several polyene molecule combination (trans lycopene with add the All-cislycopene that iodine obtains combine) can obtain broadband fluorescence.And rule of thumb judge, when the atomicity of the carbon of straight chain conjugation is 10 ~ 30, as: also all contain " conjugated polyene " functional group identical or close with lycopene in the molecule of beta carotene, canthaxanthin, therefore all can obtain identical technique effect.
Through experiment test, when employing fluorescent seeds concentration is 10
-5to 10
-7during M, pumping laser threshold power density is generally 0.008 ~ 0.011W/cm2, and when incident light energy is 1.4mJ, Output of laser energy is 0.4mJ, and conversion efficiency is up to 28%.In addition, the concentration of fluorescent dye should 10
-5to 10
-7between M, because when concentration is excessive, the absorption loss of fluorescent dye is large, and pump light has not all sponged substantially, does not change into laser.When the thing that concentration is too low, the quantum yield of fluorescent dye is too low, does not have the effect that fluorescent seeds strengthens.
Claims (4)
1. an axial pumping row ripple amplifies liquid-core optical fibre laser, comprise pumping laser light source (1), outer light path aperture (2) and coupled lens (6), it is characterized in that, it also comprises liquid-core optical fibre (3), transmission grating (4) and/or the prism of refractive index more than 1.70 (5); Basic mode laser is obtained by outer light path aperture (2) after sending pumping laser by pumping laser light source (1), utilize coupled lens (6) basic mode laser coupled to be exported to obtaining tunable stimulated Raman radiation in liquid-core optical fibre (3), finally by incisure density be 600 ~ 700 transmission grating (4) and/or the prism of refractive index more than 1.70 (5) carry out light-splitting processing after complete Laser output process; Fill the organic liquid that the refractive index of having dissolved fluorescent dye is greater than quartz in described liquid-core optical fibre (3), and wherein the concentration of fluorescent dye 10
-5to 10
-7between M.
2. axial pumping row ripple according to claim 1 amplifies liquid-core optical fibre laser, it is characterized in that, described coupled lens (6) is coated with 532nm anti-reflection film.
3. axial pumping row ripple according to claim 1 amplifies liquid-core optical fibre laser, it is characterized in that, containing C in the molecule of described fluorescent dye
10~ C
30conjugation linear polyene functional group.
4. the axial pumping row ripple according to claim 1 or 3 amplifies liquid-core optical fibre laser, and it is characterized in that, described fluorescent dye is beta carotene, lycopene or canthaxanthin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520390453.XU CN204696441U (en) | 2015-06-08 | 2015-06-08 | Axial pumping row ripple amplifies liquid-core optical fibre laser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520390453.XU CN204696441U (en) | 2015-06-08 | 2015-06-08 | Axial pumping row ripple amplifies liquid-core optical fibre laser |
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| Publication Number | Publication Date |
|---|---|
| CN204696441U true CN204696441U (en) | 2015-10-07 |
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|---|---|---|---|
| CN201520390453.XU Expired - Fee Related CN204696441U (en) | 2015-06-08 | 2015-06-08 | Axial pumping row ripple amplifies liquid-core optical fibre laser |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901151A (en) * | 2015-06-08 | 2015-09-09 | 吉林大学 | Axial pumped traveling-wave amplified liquid-core fiber laser |
| CN109038213A (en) * | 2018-10-24 | 2018-12-18 | 江苏天元激光科技有限公司 | A kind of high-power semiconductor laser focusing export structure |
-
2015
- 2015-06-08 CN CN201520390453.XU patent/CN204696441U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901151A (en) * | 2015-06-08 | 2015-09-09 | 吉林大学 | Axial pumped traveling-wave amplified liquid-core fiber laser |
| CN109038213A (en) * | 2018-10-24 | 2018-12-18 | 江苏天元激光科技有限公司 | A kind of high-power semiconductor laser focusing export structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20170608 |