CN102790349A - Multi-wavelength passively Q-switched laser - Google Patents
Multi-wavelength passively Q-switched laser Download PDFInfo
- Publication number
- CN102790349A CN102790349A CN2012102685790A CN201210268579A CN102790349A CN 102790349 A CN102790349 A CN 102790349A CN 2012102685790 A CN2012102685790 A CN 2012102685790A CN 201210268579 A CN201210268579 A CN 201210268579A CN 102790349 A CN102790349 A CN 102790349A
- Authority
- CN
- China
- Prior art keywords
- laser
- light source
- pump light
- optical cavity
- optical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Lasers (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention provides a passively Q-switched laser capable of simultaneously outputting two or more than two optical pulses with different wavelengths. As for the laser provided by the invention, under the condition that an optical filter or an optical filter group with two or more than two transmission peaks is not included in an optical resonant cavity within a gain spectrum range of a gain medium, as the gain medium in the optical resonant cavity has two or more than two gain peaks which can be in a Q-switched state at the same time, so that two or more than two Q-switched optical pulses with different wavelengths can be simultaneously output.
Description
Technical field
The present invention relates to the passive Q-adjusted technical field of laser, be specifically related to export the passive Q-regulaitng laser of the light pulse of two or more different wave lengths simultaneously.
Background technology
Q-switched laser has potential application prospect because of its higher pulse power and relatively short pulse duration at optical communication system, sensing and field of medicaments, has attracted numerous concerns.In the Q-switch laser technology, two kinds of main methods have initiatively transfers Q and passive Q-adjusted.Active Q-switched laser complex structure, cost is higher.On the contrary, passive Q-regulaitng laser has then represented simple and compact for structure and technical advantage cheaply.Be different from the general passive Q-regulaitng laser of only exporting a centre wavelength; Multi-wavelength passive Q regulation pulse laser can be exported the pulse laser of two or more different centre wavelengths simultaneously, and this laser can be applied to optical sensing, light signal is handled and optical communication system.
Present multi-wavelength and Q-modulating fiber laser mainly comprises two kinds, a kind of employing nonlinear polarization rotation technique, and this technology is because the polarization state of optical fiber is subject to the influence of optic fibre environment, and pulse is unstable, therefore is not suitable for commercial application; Also have and a kind ofly utilize the stimulated Brillouin scattering effect, but adopt the device of this system comparatively complicated.
Up to now, the method for multi-wavelength passive Q regulation pulse fiber laser proposed by the invention is not also appeared in the newspapers.
Summary of the invention
The invention provides a kind of passive Q-regulaitng laser of exporting two or more different wave length light pulses simultaneously.
In one example; Said laser is made up of pumping source, optical cavity, gain media, passive Q-adjusted device, coupling output device; Be not included in the laser and have optical filter or the optical filter group that two or more see through the peak in the gain spectral scope of gain media; Gain media in the optical cavity has two or more gain peak, exports the accent Q light pulse of two or more different wave lengths simultaneously.。
In one example, described pumping source is made up of pump light source and pump light coupled apparatus, and effect is for optical cavity provides pump light, and pump light is coupled in the optical cavity.
In one example, described pump light source comprises semiconductor light source, dyestuff light source, solid light source and gas lamp.
In one example, described gain media comprises semiconductor, crystal, rare earth material doped-glass and the rare earth material doped fiber with the level structure that is complementary with the pump light source emission spectra.
In one example, described passive Q-adjusted device comprises that semiconductor device, photon crystal device, nonlinear polarization with saturated absorption characteristic rotate device, carbon nano-tube material device and the grapheme material device that related elements constitutes.
In one example, the effect of described coupling output device is that a part of light with chamber internal fixation ratio outputs to outside the optical cavity, and in the remainder beam split back light resonant cavity, the coupling output device comprises fiber coupler and beam splitter.
In one example, the repetition of two or more Q impulses of described laser is frequently with variable power.
In one example, described optical cavity comprises line style chamber, refrative cavity, annular chamber and " 8 " font chamber.
In one example, described laser perhaps changes the loss height in the optical cavity through the size that changes pump light source power, and the characteristic of regulating gain media makes laser realize Q impulse output simultaneously in two or more gain peak.
A kind of multi-wavelength passive Q-regulaitng laser that the present invention proposes can be realized two and two above different wave length pulse outputs at the same time or separately, and this laser has the following advantages:
1. laser structure provided by the present invention is simple; Compare single wavelength passive Q-regulaitng laser structure; In the chamber under the situation of reactive filter, through the gain characteristic in the control chamber, just simultaneously or the accent Q light pulse of exporting two or more different wave lengths respectively.
2. laser operation proposed by the invention is simple, realizes easily, and stability is high, favorable repeatability.Accomplish accent Q at optical cavity, after the output stable pulse, according to the actual requirements, need only regulate pump light source power or change the loss height in the optical cavity, the characteristic of adjusting gain media, the switching that just can realize transferring the Q wavelength.
Description of drawings
Fig. 1 is a passive Q regulation pulse laser structure sketch map.Wherein 1 is pumping source, and 2 is gain media, and 3 is passive Q-adjusted device, and 4 are the coupling output device, and 5 is optical cavity.Each device position in optical cavity can be changed, but pumping source is adjacent with gain media, guarantees that its pump light that produces without other device, directly is coupled into gain media.
Fig. 2 is the structure chart of multi-wavelength passive Q regulation pulse laser.Wherein 1 is the 980nm semiconductor laser, and 2 is the 980nm/1550nm wavelength division multiplexer, and 3 is Er-doped fiber; 4 is optical isolator, and 5 is Polarization Controller, and 6 is general single mode fiber; 7 is carbon nano tube/polyamide 6 imines composite material film, and 8 and 9 is fiber coupler, and 10 is filter; 11 is spectroanalysis instrument, and 12 is photo-detector, and 13 is oscilloscope.
Fig. 3 is when pump power 85mW, the spectrogram of the output light of measurement.
Fig. 4 is when pump power 85mW, the output optical pulse time-domain diagram of measurement.
Embodiment
In this execution mode; Pumping source comprises as the 980nm semiconductor laser of pump light source with as the 980nm/1550nm wavelength division multiplexer of pump light coupled apparatus; Optical cavity is optical fiber unidirectional loop chamber, and the device in the optical cavity comprises the Er-doped fiber as gain media, as the carbon nano tube/polyamide 6 imines composite material film of passive Q-adjusted device; Fiber coupler, optical isolator and Polarization Controller as the coupling output device.
The absorption coefficient of Er-doped fiber at the 1530nm place is 6.1dB/m, and the GVD at the 1550nm place is-6.5ps/km/nm that length is 4.7m.Carbon nano tube/polyamide 6 imines composite material film has the saturated absorption characteristic, and film thickness is 0.058mm, the about 8.6dB of its loss at the 1554nm place.The splitting ratio of fiber coupler is 2:8, promptly has 20% light to output to outside the optical cavity, and 80% optical coupling gets in the optical cavity.General single mode fiber length in the optical cavity is 3.1m.Output light gets into the fiber coupler of a 1:9; 10% light gets into the spectroanalysis instrument spectra re-recorded, and 90% light gets into filter, and the two-way light of 1532nm and 1558nm is separated; After being surveyed by photo-detector respectively then, get into the time domain waveform that oscilloscope is observed pulse.
After pump power surpasses 28mW; Q impulse at first appears in the 1558nm place, along with pump power increases, after surpassing 47mW; Q impulse also appears in the 1532nm wavelength; This moment, there were two Q impulses simultaneously in laser, and accompanying drawing 3 is output spectrum figure and pulse time-domain diagram when pump power is 85mW with accompanying drawing 4.
Next we have measured repetition rate and the pulse period of the output pulse change curve with pump power, like accompanying drawing 4.
What should explain at last is, more than embodiment in each accompanying drawing only in order to the passive Q regulation pulse laser of exporting the light pulse of two or more different wave lengths simultaneously of the present invention to be described, but unrestricted.Although the present invention is specified with reference to embodiment; Those of ordinary skill in the art is to be understood that; Technical scheme of the present invention is made amendment or is equal to replacement, do not break away from the spirit and the scope of technical scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (9)
1. multi-wavelength passive Q-regulaitng laser; Form by pumping source, optical cavity, gain media, passive Q-adjusted device, coupling output device; Be not included in the laser and have optical filter or the optical filter group that two or more see through the peak in the gain spectral scope of gain media; Gain media in the optical cavity has two or more gain peak, exports the accent Q light pulse of two or more different wave lengths simultaneously.
2. laser according to claim 1 is characterized in that, pumping source is made up of pump light source and pump light coupled apparatus, and effect is for optical cavity provides pump light, and pump light is coupled in the optical cavity.
3. pump light source according to claim 2 is characterized in that, pump light source comprises semiconductor light source, dyestuff light source, solid light source and gas lamp.
4. laser according to claim 1 is characterized in that, gain media comprises semiconductor, crystal, rare earth material doped-glass and the rare earth material doped fiber with the level structure that is complementary with the pump light source emission spectra.
5. laser according to claim 1; It is characterized in that passive Q-adjusted device comprises that semiconductor device, photon crystal device, nonlinear polarization with saturated absorption characteristic rotate device, carbon nano-tube material device and the grapheme material device that related elements constitutes.
6. laser according to claim 1; It is characterized in that; The effect of coupling output device is that a part of light with chamber internal fixation ratio outputs to outside the optical cavity, and in the remainder beam split back light resonant cavity, the coupling output device comprises fiber coupler and beam splitter.
7. laser according to claim 1 is characterized in that, the repetition of two or more Q impulses is frequently with variable power.
8. laser according to claim 1 is characterized in that, optical cavity comprises line style chamber, refrative cavity, annular chamber and figure of eight chamber.
9. laser according to claim 1; It is characterized in that; Perhaps change the loss height in the optical cavity through the size that changes pump light source power, the characteristic of regulating gain media makes laser realize Q impulse output simultaneously in two or more gain peak.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102685790A CN102790349A (en) | 2012-07-30 | 2012-07-30 | Multi-wavelength passively Q-switched laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102685790A CN102790349A (en) | 2012-07-30 | 2012-07-30 | Multi-wavelength passively Q-switched laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102790349A true CN102790349A (en) | 2012-11-21 |
Family
ID=47155682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102685790A Pending CN102790349A (en) | 2012-07-30 | 2012-07-30 | Multi-wavelength passively Q-switched laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102790349A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132797A (en) * | 2014-07-16 | 2014-11-05 | 奉化市宇创产品设计有限公司 | Reflecting mirror characteristic testing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1209669A (en) * | 1997-08-25 | 1999-03-03 | 中国科学院福建物质结构研究所 | Double wave-length vibration passive double modulating Q laser |
| CN1595736A (en) * | 2004-06-25 | 2005-03-16 | 南开大学 | Convertible dual-wavelength doping optical fiber laser |
| CN101183769A (en) * | 2007-11-08 | 2008-05-21 | 北京交通大学 | Device for single polarization dual-wavelength fiber grating laser to generate microwave, millimeter wave |
| CN101986483A (en) * | 2010-10-08 | 2011-03-16 | 北京航空航天大学 | Passive mode-locked pulsed laser |
-
2012
- 2012-07-30 CN CN2012102685790A patent/CN102790349A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1209669A (en) * | 1997-08-25 | 1999-03-03 | 中国科学院福建物质结构研究所 | Double wave-length vibration passive double modulating Q laser |
| CN1595736A (en) * | 2004-06-25 | 2005-03-16 | 南开大学 | Convertible dual-wavelength doping optical fiber laser |
| CN101183769A (en) * | 2007-11-08 | 2008-05-21 | 北京交通大学 | Device for single polarization dual-wavelength fiber grating laser to generate microwave, millimeter wave |
| CN101986483A (en) * | 2010-10-08 | 2011-03-16 | 北京航空航天大学 | Passive mode-locked pulsed laser |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132797A (en) * | 2014-07-16 | 2014-11-05 | 奉化市宇创产品设计有限公司 | Reflecting mirror characteristic testing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106207722B (en) | Dissipative solitons and orphan's dual laser based on dispersion compensating fiber | |
| CN101826696A (en) | High-energy low-repetition-frequency fiber laser | |
| CN101076748A (en) | Examinant | |
| WO2012112253A2 (en) | Compact, coherent, and high brightness light sources for the mid and far ir | |
| CN101986483A (en) | Passive mode-locked pulsed laser | |
| CN100430815C (en) | Adjustable light pulse time-delay device with wide bandwidth and multiple gains based on stimulated brillouin scatter | |
| CN106129786A (en) | Tunable dual wavelength mode locked fiber laser based on tapered fiber | |
| CN101557071A (en) | Erbium doped fiber laser with convertible multi-wavelength and mode locking and realization method thereof | |
| CN103151682B (en) | Anti-Strokes Raman fiber laser achieving multi-wavelength output | |
| CN103996962A (en) | Nonlinear polarization rotary mode-locked and wavelength tunable type L-waveband femtosecond Er-doped fiber laser | |
| Wang et al. | Controllable dissipative soliton and Q-switched pulse emission in a normal dispersion fiber laser using SESAM and cavity loss tuning mechanism | |
| CN103592804A (en) | Portable high-resolution optical fiber CARS microscopic excitation source device and implementation method | |
| CN103001118A (en) | Gain narrowing controlled all-fiber laser amplifier for high-power picosecond pulses | |
| CN104158074A (en) | Convertible dual-wavelength mode clocking full-fiber laser and production method | |
| CN204118458U (en) | A kind of single mode full-optical-fiber laser | |
| CN104409952A (en) | Double-cladding thulium-doped all-fiber ultrafast laser based on nonlinear polarization rotation mode locking | |
| CN210640481U (en) | Multi-wavelength mode-locked fiber laser based on nonlinear multi-mode interference effect | |
| Fang et al. | Efficient generation of all-fiber femtosecond pulses at 1.7 μ m via soliton self-frequency shift | |
| CN102637993A (en) | Erbium-doped fiber soliton laser with adjustable passive graphite mode-locking harmonic order | |
| CN102841480A (en) | All-optical wavelength converter based on photonic crystal optical fiber four-wave frequency mixing effect | |
| CN107196183A (en) | A kind of multi-wavelength mode locked fiber laser based on micro-nano fiber ring | |
| CN103399446B (en) | Based on the All Optical Wave Converter of low light level regulation and control optical soliton | |
| Liu et al. | Multiwavelength thulium-doped silica fiber laser incorporating an all-fiber phase modulator | |
| CN104733987A (en) | Linear automatic tunable annular cavity fiber laser | |
| CN102790349A (en) | Multi-wavelength passively Q-switched laser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121121 |