CN104362497A - Single-frequency blue-green light source based on 930 nm single-frequency fiber laser unit - Google Patents
Single-frequency blue-green light source based on 930 nm single-frequency fiber laser unit Download PDFInfo
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- CN104362497A CN104362497A CN201410666888.2A CN201410666888A CN104362497A CN 104362497 A CN104362497 A CN 104362497A CN 201410666888 A CN201410666888 A CN 201410666888A CN 104362497 A CN104362497 A CN 104362497A
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Abstract
The invention discloses a single-frequency blue-green light source based on a 930 nm single-frequency fiber laser unit. The single-frequency blue-green light source based on the 930 nm single-frequency fiber laser unit is characterized by comprising the linear polarization single-frequency 930 nm full-fiber laser unit, a 930 nm linear polarization full-fiber amplifier, a laser aligner and a frequency multiplication system, 930 nm single-frequency lasers output by the linear polarization single-frequency 930 nm full-fiber laser unit are amplified through the 930 nm linear polarization full-fiber amplifier, aligned by the laser aligner and input in the frequency multiplication system, and frequency multiplication is conducted on the lasers, so that 465 nm single-frequency blue-green lasers are acquired. According to the single-frequency blue-green light source, single-frequency blue-green light is acquired through power amplification and frequency multiplication of the 930 nm single-frequency lasers output by the single-frequency full-fiber laser unit, the light source can be used for research on the photoelectric effect and the light frequency conversion of a light-sensitive material and can also be used in the fields of laser display, laser illumination, underwater detection, underwater communication and the like, and the light source especially has important application value in the fields of molecule and atom detection, laser spectroscopy and biomedicine.
Description
Technical field
The present invention relates to a kind of novel blue and green light source, especially a kind of bluish-green light source of novel single-frequency based on 930 nm single frequency optical fiber lasers, belongs to optical fiber and laser technology field.
Background technology
Fiber laser take optical fiber as the laser of gain media, and wherein most widely used gain fibre is rare-earth doped optical fibre.And by using the gain fibre of the different rare earth element of doping, the operation wavelength of fiber laser can cover from ultraviolet to infrared broad range.Because fiber laser has simple and compact for structure, avoid safeguarding, low energy consumption, high conversion efficiency, high stability, the distinct advantage such as high light beam quality, so it is in communication, medical science, military, the aspects such as materials processing have a wide range of applications.And single frequency optical fiber laser is except the above-mentioned advantage with fiber laser, also have coherence length long in addition, the advantages such as monochromaticjty is good, and breadth of spectrum line is narrow, the fields such as these features make it be widely used in photodetection, laser spectroscopy, nonlinear optics.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of wavelength ratio shorter, the bluish-green light source of novel single-frequency based on 930 nm single frequency optical fiber lasers that photon energy is larger.
The present invention is realized by the following technical programs.
A kind of bluish-green light source of single-frequency based on 930 nm single frequency optical fiber lasers, it is characterized in that comprising linear polarization single-frequency 930 nm full-optical-fiber laser 1,930 nm linear polarization all-fiber amplifiers 2, laser aligner 3, frequency doubling system 4, it is characterized in that 930 nm single-frequency lasers that linear polarization single-frequency 930 nm full-optical-fiber laser 1 exports are after 930 nm linear polarization all-fiber amplifiers 2 amplify, being collimated in input frequency doubling system 4 by laser aligner 3 is the single-frequency bluish-green laser of 465 nm by frequency multiplication.
Linear polarization single-frequency 930 nm full-optical-fiber laser of the present invention, comprise 808 semiconductor pump lasers 11, its output tail optical fiber and the pumping input of 808/930 nm optical fibre wavelength division multiplexer 12 are welded together, the signal input part of optical fibre wavelength division multiplexer 12 is cut sth. askew, the output welding high reflectance Fiber Bragg Grating FBG 13 of 808/930 nm optical fibre wavelength division multiplexer 12, the other end and the double clad neodymium-doped fiber 14 of high reflectance Fiber Bragg Grating FBG 13 are welded together, after neodymium-doped fiber 14, then the antiradar reflectivity Fiber Bragg Grating FBG 15 be formed on polarization maintaining optical fibre is write in welding, form resonant cavity, last welding centre wavelength is the optical isolator 16 of 930 nm.
930 nm linear polarization all-fiber amplifiers 2 of the present invention can be single-stage 930 nm linear polarization all-fiber amplifiers 21, also can be made up of the cascade of multiple single-stage 930 nm linear polarization all-fiber amplifier 21, every first stage amplifier is formed by 808 nm semiconductor pump lasers, optical-fiber bundling device or 808/930 nm optical fibre wavelength division multiplexer and neodymium-doped fiber, equal welding 930 nm optical isolators 22 after every first stage amplifier.
The effect of laser aligner 3 of the present invention is by 930 nm single-frequency laser collimation input frequency doubling systems 4.
Frequency doubling system 4 of the present invention comprises tactic
wave plate 41, condenser lens 42, nonlinear crystal 43, dichroic mirror 44, λ/2 wave plate 41 regulates the linear polarization of 930nm single-frequency laser, 930 nm linear polarization single-frequency lasers focus on nonlinear crystal 43 by condenser lens 42, the intrinsic second-harmonic generation of nonlinear crystal 43 will make 930 nm linear polarization single-frequency laser generation frequencys multiplication, produce the bluish-green laser of 465 nm, 930 nm laser separate with 465 nm blue green lights and export by dichroic mirror 44.
808 nm semiconductor pump lasers of the present invention are the semiconductor laser of band tail optical fiber, and can be single-mode laser or multimode laser, operation wavelength be 808 nm;
In linear polarization single-frequency 930 nm full-optical-fiber laser 1 of the present invention export single-frequency laser wavelength be 930 nm, this be by the bending of neodymium-doped fiber and ensure the centre wavelength of fiber grating, reflectance spectrum bandwidth realizes.
Output of laser in linear polarization single-frequency 930 nm full-optical-fiber laser 1 of the present invention is single-frequency laser, and the output of single-frequency laser is that reflectance spectrum bandwidth that is long by the chamber of control laser and fiber grating realizes.
Neodymium-doped fiber in 930 nm linear polarization all-fiber amplifiers 2 of the present invention can be single cladded fiber or doubly clad optical fiber; pumping adopts forward manner or reverse manner or positive and negative bidirectional mode to the pumping of neodymium-doped fiber, and after every first stage amplifier, equal welding 930 nm optical isolators are to protect amplifier at the corresponding levels.
The present invention is that the 930 nm single-frequency lasers by exporting single-frequency full-optical-fiber laser carry out power amplification and frequency multiplication, obtain single-frequency blue green light, single-frequency blue green light can be used for studying the photoelectric effect of light-sensitive material and optical frequency conversion, also can be used as visible ray, have important application in fields such as laser display, laser lighting, undersea detection, subsurface communications.
Accompanying drawing explanation
Fig. 1 is a kind of structured flowchart of the present invention.
Fig. 2 is a kind of structure intention of intermediate power amplifier 21 of the present invention.
Fig. 3 is the another kind of structural representation of intermediate power amplifier 21 of the present invention.
Fig. 4 is another structural representation of intermediate power amplifier 21 of the present invention.
Mark in figure: linear polarization single-frequency 930 nm full-optical-fiber laser 1,930 nm linear polarization all-fiber amplifier 2, laser aligner 3, frequency doubling system 4.808 nm semiconductor pump laser 11,808/930 nm optical fibre wavelength division multiplexers 12, high reflectance Fiber Bragg Grating FBG 13, Yb dosed optical fiber 14, writes antiradar reflectivity Fiber Bragg Grating FBG 15, the 930 nm optical isolator 16 be formed on polarization maintaining optical fibre; , single-stage 930 nm linear polarization all-fiber amplifier 21,930 nm optical isolator 22; Laser aligner 3;
wave plate 41, condenser lens 42, nonlinear crystal 43, dichroic mirror 44; 808 nm semiconductor pump lasers 211, optical-fiber bundling device 212 or 808/930 nm optical fibre wavelength division multiplexer 212, neodymium-doped fiber 213.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, a kind of bluish-green light source of novel single-frequency based on 930 nm single frequency optical fiber lasers, it is characterized in that comprising linear polarization single-frequency 930 nm full-optical-fiber laser 1,930 nm linear polarization all-fiber amplifiers 2, laser aligner 3, frequency doubling system 4, the 930 nm single-frequency lasers that linear polarization single-frequency 930 nm full-optical-fiber laser 1 exports are after 930 nm linear polarization all-fiber amplifiers 2 amplify, and being collimated in input frequency doubling system 4 by laser aligner 3 is the single-frequency bluish-green laser of 465 nm by frequency multiplication.
Linear polarization single-frequency 930 nm full-optical-fiber laser of the present invention, comprise 808 nm semiconductor pump lasers 11, its output tail optical fiber and the pumping input of 808/930 nm optical fibre wavelength division multiplexer 12 are welded together, the signal input part of optical fibre wavelength division multiplexer 12 is cut sth. askew, the output of wavelength division multiplexer 12 connects high reflectance Fiber Bragg Grating FBG 13, the other end and the Yb dosed optical fiber 14 of grating 13 are welded together, the other end of optical fiber 14 then with write the antiradar reflectivity Fiber Bragg Grating FBG 15 phase welding be formed on polarization maintaining optical fibre, last welding 930 nm optical isolator 16, 930 described nm linear polarization all-fiber amplifiers 2 can be single-stage 930 nm linear polarization all-fiber amplifiers 21, also can be made up of the cascade of multiple single-stage 930 nm linear polarization all-fiber amplifier 21, single-stage 930 nm linear polarization all-fiber amplifier 21 comprises 808 nm semiconductor pump lasers 211, its tail optical fiber and the pumping input phase welding of optical-fiber bundling device 212 or 808/930 nm optical fibre wavelength division multiplexer 212, the signal output part welding neodymium-doped fiber 213 of optical-fiber bundling device or optical fibre wavelength division multiplexer, equal welding 930 nm optical isolators 22 after every first stage amplifier, described laser aligner 3 is by 930 nm single-frequency lasers collimation input frequency doubling systems 4 after amplification, described frequency doubling system 4 comprises
wave plate 41 can regulate the linear polarization of 930nm laser, 930 nm linear polarization single-frequency lasers focus on nonlinear crystal 43 by condenser lens 42,930 nm linear polarization single-frequency laser frequencys multiplication are 465 nm by intrinsic second-harmonic generation by nonlinear crystal 43, finally by point luminous effect of dichroic mirror 44, the blue green light of 465 nm separates with 930 nm laser and transmits, described nonlinear crystal 43 can be BIBO crystal or lbo crystal or bbo crystal.
Claims (9)
1. the bluish-green light source of single-frequency based on 930 nm single frequency optical fiber lasers, it is characterized in that comprising linear polarization single-frequency 930 nm full-optical-fiber laser, 930 nm linear polarization all-fiber amplifiers, laser aligner and frequency doubling system, it is characterized in that linear polarization single-frequency 930 nm full-optical-fiber laser 1 output is connected with laser aligner after 930 nm linear polarization all-fiber amplifiers amplify, laser aligner collimation input frequency doubling system, the single-frequency bluish-green laser being 465 nm through frequency doubling system frequency multiplication exports.
2. a kind of bluish-green light source of single-frequency based on 930 nm single frequency optical fiber lasers according to claim 1, it is characterized in that linear polarization single-frequency 930 nm full-optical-fiber laser comprises 808 semiconductor pump lasers, the output tail optical fiber of 808 semiconductor pump lasers and the pumping input of 808/930 nm optical fibre wavelength division multiplexer are welded together, the signal input part of optical fibre wavelength division multiplexer is cut sth. askew, the output welding high reflectance Fiber Bragg Grating FBG of 808/930 nm optical fibre wavelength division multiplexer, the other end and the double clad neodymium-doped fiber of high reflectance Fiber Bragg Grating FBG are welded together, the antiradar reflectivity Fiber Bragg Grating FBG be formed on polarization maintaining optical fibre is write in the welding of the neodymium-doped fiber other end, form resonant cavity, antiradar reflectivity Fiber Bragg Grating FBG other end welding centre wavelength is the optical isolator of 930 nm.
3. a kind of bluish-green light source of single-frequency based on 930 nm single frequency optical fiber lasers according to claim 1, it is characterized in that 930 nm linear polarization all-fiber amplifiers are single-stage 930 nm linear polarization all-fiber amplifiers, or become by multiple single-stage 930 nm linear polarization all-fiber amplifier stage joint group, each single-stage 930 nm linear polarization all-fiber amplifier is by 808 nm semiconductor pump lasers, optical-fiber bundling device or 808/930 nm optical fibre wavelength division multiplexer and neodymium-doped fiber are formed, equal welding 930 nm optical isolators after every one-level single-stage 930 nm linear polarization all-fiber amplifier.
4. a kind of bluish-green light source of single-frequency based on 930 nm single frequency optical fiber lasers according to claim 1, is characterized in that frequency doubling system comprises tactic
wave plate, condenser lens, nonlinear crystal, dichroic mirror,
wave plate regulates the linear polarization of 930 nm single-frequency lasers, 930 nm linear polarization single-frequency lasers focus on nonlinear crystal by condenser lens, the intrinsic second-harmonic generation of nonlinear crystal will make 930 nm linear polarization single-frequency laser generation frequencys multiplication, produce the bluish-green laser of 465 nm, 930 nm laser separate with 465 nm blue green lights and export by dichroic mirror.
5. a kind of bluish-green light source of single-frequency based on 930 nm single frequency optical fiber lasers according to claim 1, it is characterized in that 808 nm semiconductor pump lasers are the semiconductor laser of single-mode laser or multimode band tail optical fiber, operation wavelength is 808 nm.
6. a kind of bluish-green light source of single-frequency based on 930 nm single frequency optical fiber lasers according to claim 1, to it is characterized in that in linear polarization single-frequency 930 nm full-optical-fiber laser export single-frequency laser wavelength be 930 nm.
7. a kind of bluish-green light source of single-frequency based on 930 nm single frequency optical fiber lasers according to claim 1, is characterized in that the neodymium-doped fiber used in 930 nm linear polarization all-fiber amplifiers is single covering neodymium-doped fiber or double clad neodymium-doped fiber.
8. a kind of bluish-green light source of single-frequency based on 930 nm single frequency optical fiber lasers according to claim 1, is characterized in that 930 nm linear polarization all-fiber amplifiers adopt forward pumping mode or backward pumping mode or positive and negative two directional pump mode to the pumping of neodymium-doped fiber.
9. a kind of bluish-green light source of single-frequency based on 930 nm single frequency optical fiber lasers according to claim 1, is characterized in that nonlinear crystal is BIBO crystal or lbo crystal or bbo crystal.
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| CN201410666888.2A CN104362497A (en) | 2014-11-20 | 2014-11-20 | Single-frequency blue-green light source based on 930 nm single-frequency fiber laser unit |
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| CN201410666888.2A CN104362497A (en) | 2014-11-20 | 2014-11-20 | Single-frequency blue-green light source based on 930 nm single-frequency fiber laser unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244738A (en) * | 2015-10-14 | 2016-01-13 | 安徽大学 | Single-frequency narrow linewidth green laser device |
| WO2023088137A1 (en) * | 2021-11-16 | 2023-05-25 | 华南理工大学 | Hemoglobin concentration measurement apparatus and measurement method |
Citations (3)
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|---|---|---|---|---|
| US6614815B1 (en) * | 2000-06-29 | 2003-09-02 | Lightwave Electronics | Blue laser based on interactions in fiber |
| CN103050873A (en) * | 2012-12-29 | 2013-04-17 | 山东海富光子科技股份有限公司 | High-power pulse type ytterbium-doped all-fiber laser system |
| CN103545702A (en) * | 2013-10-11 | 2014-01-29 | 山东海富光子科技股份有限公司 | Novel single-frequency pulse blue laser light source based on 978nm single-frequency pulse fiber laser |
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2014
- 2014-11-20 CN CN201410666888.2A patent/CN104362497A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6614815B1 (en) * | 2000-06-29 | 2003-09-02 | Lightwave Electronics | Blue laser based on interactions in fiber |
| CN103050873A (en) * | 2012-12-29 | 2013-04-17 | 山东海富光子科技股份有限公司 | High-power pulse type ytterbium-doped all-fiber laser system |
| CN103545702A (en) * | 2013-10-11 | 2014-01-29 | 山东海富光子科技股份有限公司 | Novel single-frequency pulse blue laser light source based on 978nm single-frequency pulse fiber laser |
Non-Patent Citations (1)
| Title |
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| KAI QIAN ET AL.: "Mode-locked Nd-doped fiber laser 930nm", 《OPTICS LETTERS》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244738A (en) * | 2015-10-14 | 2016-01-13 | 安徽大学 | Single-frequency narrow linewidth green laser device |
| WO2023088137A1 (en) * | 2021-11-16 | 2023-05-25 | 华南理工大学 | Hemoglobin concentration measurement apparatus and measurement method |
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Application publication date: 20150218 |