CN103545702A - Novel single-frequency pulse blue laser light source based on 978nm single-frequency pulse fiber laser - Google Patents
Novel single-frequency pulse blue laser light source based on 978nm single-frequency pulse fiber laser Download PDFInfo
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- CN103545702A CN103545702A CN201310472060.9A CN201310472060A CN103545702A CN 103545702 A CN103545702 A CN 103545702A CN 201310472060 A CN201310472060 A CN 201310472060A CN 103545702 A CN103545702 A CN 103545702A
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Abstract
The invention discloses a novel single-frequency pulse blue laser light source based on 978nm single-frequency pulse fiber laser. The novel single-frequency pulse blue laser light source is characterized by comprising a linear-polarization single-frequency Q-switching pulse-type 978nm all-fiber laser device, a collimator, a wave plate, a focusing lens, a nonlinear crystal and a dichroic mirror; a signal end of the linear-polarization single-frequency Q-switching pulse-type 978nm all-fiber laser device is connected with the collimator; the 978nm single-frequency pulse laser is collimated and outputted to be connected with the wave plate; the other end of the wave plate is connected with the focusing lens; the 978nm linearly-polarized single-frequency pulse laser is focused through the focusing lens and then is subjected to frequency doubling through the nonlinear crystal, then the remaining 978nm laser is filtered via the dichroic mirror, and single-frequency pulse-type blue laser is outputted. The novel single-frequency pulse blue laser light source has a significant application value in the aspects of high-density optical storage, biological and medical diagnosis, laser color display, underwater detection, underwater communication, remote sensing and the like.
Description
Technical field
The present invention relates to a kind of blue light source, especially a kind of novel pure-tone pulse blue light source based on 978 nm pure-tone pulse optical-fiber lasers, belongs to optical fiber and laser technology field.
Background technology
Q-switched laser is by insertion loss device in laser cavity, and its laser generation threshold value is raise, and under low reactance-resistance ratio state, can not form laser generation.Due to the existence of pump light, laser medium is in population inversion state, and when loss device is when moment reduces the wastage, in chamber, threshold value reduces, and moment, in high Q state of value, reaches oscillation threshold at short notice, forms laser pulse output.It is low that optical fiber Q-switched laser has energy consumption, and the life-span is long, and stability is high, good beam quality, and compact conformation, energy conversion efficiency is high, without distinguishing features such as light path adjustment and maintenances.In communication, medical science, military affairs, the aspects such as materials processing are widely used.SF pulse optical fibre laser, possesses outside the general advantage of pulse optical fiber, also possesses coherence length long simultaneously, and monochromaticjty is good, the advantages such as breadth of spectrum line is narrow, these features make it be widely used in remote sensing, radar, range finding, spectroscopy, the fields such as nonlinear optics.
The Output of laser of the 978 nm wave bands that ytterbium-doping optical fiber laser produces is important pumping sources of erbium-doped fiber amplifier.The blue light of 489 nm that other 978 nm lasers produce through frequency multiplication is the window wave band of seawater, and value has a wide range of applications in fields such as high density data storage, submarine communication, large scale display (needing blue green light to construct panchromatic demonstration), detection, life science, laser medicines.Current business-like solid state laser optical maser wavelength is mainly at near-infrared and infrared band.In solid state laser, wish obtains blue laser output, mainly contains following three kinds of methods: (1) utilizes semiconductor material with wide forbidden band directly to make the semiconductor laser of blue wave band; (2) utilize nonlinear frequency transformation technology to carry out frequency multiplication to Solid State Laser; (3) in utilization, switch technology realizes blue Laser output in mixing the crystal of rare earth, glass or optical fiber.For the semiconductor laser diode (LD) of visible waveband, the development of blue light LD needs expensive equipment and backing material, and the beam quality of LD is unsatisfactory simultaneously, in many applications, is restricted.By times frequency solid state laser device of LD pumping, need nonlinear crystalline material to carry out frequency inverted, although beam quality is fine, power output is also very high, system is more complicated.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of compactness simple, without adjustment, beam quality is also relatively good, and the life-span, long-acting rate was high, the novel pure-tone pulse blue light source based on 978 nm pure-tone pulse optical-fiber lasers that cost is low.
The present invention is realized by the following technical programs.
A novel pure-tone pulse blue light source for 978 nm pure-tone pulse optical-fiber lasers, is characterized in that comprising: linear polarization single-tone Q impulse type 978 nm full-optical-fiber lasers 1, collimater 2,
wave plate 3, condenser lens 4, nonlinear crystal 5 and dichroic mirror 6, the signal end of linear polarization single-tone Q impulse type 978 nm full-optical-fiber lasers 1 is connected with collimater 2, by 978nm pure-tone pulse laser alignment output with
wave plate 3 is connected,
the wave plate other end is connected with condenser lens 4, condenser lens 4 is by the pure-tone pulse Laser Focusing of the linear polarization of 978 nm, then pass through nonlinear crystal 5 by the linear polarization pure-tone pulse type laser freuqency doubling of 978 nm, via dichroic mirror 6, remaining 978 nm laser are filtered again to output pure-tone pulse type blue light.
Linear polarization single-tone Q impulse type of the present invention 978 nm full-optical-fiber lasers 1 comprise 915 nm semiconductor pump lasers 11, its output tail optical fiber is connected with one end of pumping protection device 12, the pumping input port of the other end of pumping protection device 12 and 915/978nm optical fibre wavelength division multiplexer 13 welds together, the output optical fibre port of 915/978nm optical fibre wavelength division multiplexer 13 connects high reflectance Fiber Bragg Grating FBG 14, the other end of high reflectance Fiber Bragg Grating FBG 14 and Yb dosed optical fiber 15 weld together, the other end of Yb dosed optical fiber 15 with write the antiradar reflectivity Fiber Bragg Grating FBG 16 being formed on polarization maintaining optical fibre and be welded together to form resonant cavity, piezoelectric element 17 is periodically pressed interacvity gain optical fiber with the polarization direction of light modulated under the driving of modulation signal drive circuit 18, one end of 915/978nm optical fibre wavelength division multiplexer 19 is connected Output of laser and residual pump light is separated with antiradar reflectivity Fiber Bragg Grating FBG 16, the signal end guiding Laser output of 915/978nm optical fibre wavelength division multiplexer 19.
This 978nm pulse laser is single-frequency laser, and the output of single-frequency laser is to realize by controlling laser cavity chamber reflectance spectrum bandwidth long and fiber grating;
the present invention utilizes short cavity to obtain on the basis of single-frequency 978nm impulse type full-optical-fiber laser, utilize second harmonics technique to carry out frequency multiplication to the pure-tone pulse light of 978 nm, obtained a kind of pure-tone pulse blue light source, it is at high-density optical storage, biology and medical diagnosis, laser color shows, undersea detection, and all there is important using value the aspects such as underwater communication and remote sensing.
Accompanying drawing explanation
Fig. 1 is a kind of structured flowchart of the present invention
Mark in figure: linear polarization single-tone Q impulse type 978 nm full-optical-fiber lasers 1, collimater 2,
wave plate 3, condenser lens 4, nonlinear crystal 5, dichroic mirror 6; 915 nm semiconductor pump lasers 11; pumping protection device 12; 915/978nm optical fibre wavelength division multiplexer 13; high reflectance Fiber Bragg Grating FBG 14; Yb dosed optical fiber 15, writes the antiradar reflectivity Fiber Bragg Grating FBG 16 being formed on polarization maintaining optical fibre, piezoelectric element 17; modulation signal drive circuit 18,915/978nm optical fibre wavelength division multiplexer wavelength division multiplexer 19.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, a kind of novel pure-tone pulse blue light source based on 978 nm pure-tone pulse optical-fiber lasers, comprises linear polarization single-tone Q impulse type 978 nm full-optical-fiber lasers 1, collimater 2,
wave plate, condenser lens 4, nonlinear crystal 5, and dichroic mirror 6.
Described linear polarization single-tone Q impulse type 978 nm full-optical-fiber lasers, it comprises 915 nm semiconductor pump lasers 11, its output tail optical fiber is connected with one end of pumping protection device 12, the pumping input port of the other end of pumping protection device 12 and 915/978nm optical fibre wavelength division multiplexer 13 welds together, the output optical fibre port of wavelength division multiplexer 13 connects high reflectance Fiber Bragg Grating FBG 14, the other end of grating 14 and Yb dosed optical fiber 15 weld together, the other end of optical fiber 15 with write the antiradar reflectivity Fiber Bragg Grating FBG 16 being formed on polarization maintaining optical fibre and be welded together to form resonant cavity, piezoelectric element 17 is periodically pressed interacvity gain optical fiber with the polarization direction of light modulated under the driving of modulation signal drive circuit 18.One end of 915/978nm optical fibre wavelength division multiplexer 19 is connected Output of laser and residual pump light is separated with antiradar reflectivity Fiber Bragg Grating FBG 16, the other end signal end guiding Laser output, this 978nm pulse laser is single-frequency laser, and the output of single-frequency laser is to realize by controlling laser cavity chamber reflectance spectrum bandwidth long and fiber grating;
Described collimater 2 is connected with the signal end of wavelength division multiplexer 19, and 978nm pure-tone pulse laser alignment is exported;
Described
wave plate 3 is for adjusting the linear polarization of pure-tone pulse laser;
Described condenser lens 4 is the pure-tone pulse Laser Focusing of the linear polarization of 978 nm, and by nonlinear crystal 5;
Described nonlinear crystal 5 is BIBO crystal, or lbo crystal, or bbo crystal, by the linear polarization pure-tone pulse type laser freuqency doubling of 978 nm, then via dichroic mirror 6, remaining 978 nm laser is filtered to output pure-tone pulse type blue light by second-harmonic generation.
Claims (7)
1. the novel pure-tone pulse blue light source based on 978 nm pure-tone pulse optical-fiber lasers, is characterized in that comprising: linear polarization single-tone Q impulse type 978 nm full-optical-fiber lasers, collimater,
wave plate, condenser lens, nonlinear crystal and dichroic mirror, the output of linear polarization single-tone Q impulse type 978 nm full-optical-fiber lasers is connected with collimater, and 978nm pure-tone pulse laser is exported through collimating device collimation, and the single-frequency laser bundle transmission after collimation is passed through
wave plate, then incides on nonlinear crystal after laser beam line focus lens focus, and nonlinear crystal is 978 nm linear polarization pure-tone pulse type laser freuqency doublings of incident, then via dichroic mirror, remaining 978 nm laser is filtered, output pure-tone pulse type blue light.
2. a kind of novel pure-tone pulse blue light source based on 978 nm pure-tone pulse optical-fiber lasers according to claim 1, it is characterized in that linear polarization single-tone Q impulse type 978 nm full-optical-fiber lasers comprise 915 nm semiconductor pump lasers, its output tail optical fiber is connected with one end of pumping protection device, the pumping input port of the other end of pumping protection device and 915/978nm optical fibre wavelength division multiplexer welds together, the output optical fibre port of 915/978nm optical fibre wavelength division multiplexer connects high reflectance Fiber Bragg Grating FBG, the other end and the Yb dosed optical fiber of high reflectance Fiber Bragg Grating FBG weld together, the other end of Yb dosed optical fiber with write the antiradar reflectivity Fiber Bragg Grating FBG being formed on polarization maintaining optical fibre and be welded together to form resonant cavity, piezoelectric element is periodically pressed interacvity gain optical fiber with the polarization direction of light modulated under the driving of modulation signal drive circuit, one end of 915/978nm optical fibre wavelength division multiplexer is connected Output of laser and residual pump light is separated with antiradar reflectivity Fiber Bragg Grating FBG, the signal end guiding Laser output of 915/978nm optical fibre wavelength division multiplexer.
3. a kind of novel pure-tone pulse blue light source based on 978 nm pure-tone pulse optical-fiber lasers according to claim 1, is characterized in that collimater can be by the 978nm pure-tone pulse optical-fiber laser collimation output of incident.
4. a kind of novel pure-tone pulse blue light source based on 978 nm pure-tone pulse optical-fiber lasers according to claim 1, is characterized in that
wave plate is for regulating the linear polarization of the 978nm pure-tone pulse optical-fiber laser of incident.
5. a kind of novel pure-tone pulse blue light source based on 978 nm pure-tone pulse optical-fiber lasers according to claim 1, is characterized in that condenser lens focuses on the 978nm pure-tone pulse optical-fiber laser of incident.
6. a kind of novel pure-tone pulse blue light source based on 978 nm pure-tone pulse optical-fiber lasers according to claim 1, is characterized in that nonlinear crystal is BIBO crystal or lbo crystal or bbo crystal.
7. a kind of novel pure-tone pulse blue light source based on 978 nm pure-tone pulse optical-fiber lasers according to claim 1, is characterized in that dichroic mirror separates the 978 nm laser that pass through from nonlinear crystal and the blue light that frequency multiplication produces.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362497A (en) * | 2014-11-20 | 2015-02-18 | 山东海富光子科技股份有限公司 | Single-frequency blue-green light source based on 930 nm single-frequency fiber laser unit |
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| US20020159736A1 (en) * | 2001-03-14 | 2002-10-31 | Dejneka Matthew J. | Cladding-pumped 3-level fiber laser/amplifier |
| US20050190802A1 (en) * | 2002-02-18 | 2005-09-01 | Richardson David J. | Pulsed light sources |
| CN101355225A (en) * | 2008-09-27 | 2009-01-28 | 北京工业大学 | W-stage 980nm single-mode ytterbium-doping optical fiber laser and frequency-doubling system thereof |
| CN202059039U (en) * | 2011-03-30 | 2011-11-30 | 北京工业大学 | Double cladding photonic crystal fiber laser of 980nm |
| CN102856784A (en) * | 2012-09-07 | 2013-01-02 | 山东海富光子科技股份有限公司 | Linear-cavity active Q-switching all-fiber laser |
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2013
- 2013-10-11 CN CN201310472060.9A patent/CN103545702A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020159736A1 (en) * | 2001-03-14 | 2002-10-31 | Dejneka Matthew J. | Cladding-pumped 3-level fiber laser/amplifier |
| US20050190802A1 (en) * | 2002-02-18 | 2005-09-01 | Richardson David J. | Pulsed light sources |
| CN101355225A (en) * | 2008-09-27 | 2009-01-28 | 北京工业大学 | W-stage 980nm single-mode ytterbium-doping optical fiber laser and frequency-doubling system thereof |
| CN202059039U (en) * | 2011-03-30 | 2011-11-30 | 北京工业大学 | Double cladding photonic crystal fiber laser of 980nm |
| CN102856784A (en) * | 2012-09-07 | 2013-01-02 | 山东海富光子科技股份有限公司 | Linear-cavity active Q-switching all-fiber laser |
Non-Patent Citations (2)
| Title |
|---|
| A. BOUCHIER ET AL.: "Frequency doubling of an efficient continuous wave single-mode Yb-doped fiber laser at 978nm in a periodically-poled MgO：LiNbO3 waveguide", 《OPTICS LETTERS》 * |
| L.A.ZENTENO ET AL.: "1W single-transverse-mode Yb-doped double-clad fiber laser at 978nm", 《ELECTRONICS LETTERS》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362497A (en) * | 2014-11-20 | 2015-02-18 | 山东海富光子科技股份有限公司 | Single-frequency blue-green light source based on 930 nm single-frequency fiber laser unit |
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Application publication date: 20140129 |