CN102377097A - Optical fiber plasma discharge laser amplification device and technology - Google Patents
Optical fiber plasma discharge laser amplification device and technology Download PDFInfo
- Publication number
- CN102377097A CN102377097A CN 201110402074 CN201110402074A CN102377097A CN 102377097 A CN102377097 A CN 102377097A CN 201110402074 CN201110402074 CN 201110402074 CN 201110402074 A CN201110402074 A CN 201110402074A CN 102377097 A CN102377097 A CN 102377097A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- discharge
- laser
- gas
- laser amplification
- 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.)
- Granted
Links
Images
Landscapes
- Lasers (AREA)
Abstract
The invention relates to an optical fiber plasma discharge laser amplification device and technology; the device comprises a quartz tube and an optical fiber for electro-discharge, wherein the quartz tube is used for mixing a helium gas and a neon gas; the optical fiber for electro-discharge is communicated at the front end of the quartz tube; and the outer wall of the optical fiber for electro-discharge is used for covering a metal electrode which is sequentially and alternatively connected with a high-voltage power supply and an earth wire. The technology comprises the following steps of: proportions of the helium reactive gas and the neon reactive gas are adjusted by a mass flow controller, the helium reactive gas and the neon reactive gas are fully mixed in a quartz tube, and uniform plasmas are generated at atmospheric pressure by using an inter-electrode alternative discharge structure; and laser beams which are emitted by a helium-neon laser pass through the optical fiber for electro-discharge through a smooth quartz plate at the tail end of the quartz tube to realize population inversion and slave machine irradiation, thereby realizing the amplification of lasers along the laser transmission direction. The optical fiber plasma discharge laser amplification device has the characteristics that an electro-discharge manner is simple, complicated vacuum equipment is not needed, the equipment cost is low, the volume is small and the energy consumption is low.
Description
Technical field
The present invention relates under atmospheric pressure, utilize micropore optical fiber to produce microplasma discharge, make laser amplifying technique on original basis through injecting reacting gas (helium, neon).
Background technology
Laser is by the radiation of the light amplification generation of stimulated emission, under the background that has theoretical preparation and production practices to press for, arises at the historic moment, and its appearance has just obtained thundering very fast development.The application of laser mainly contains industry, medical treatment, commerce, scientific research, information and military six fields.Since laser emerges, because its extensive use, thereby global research boom caused.Solid state laser, gas laser, liquid laser, semiconductor lasers etc. arise at the historic moment.Gas laser is with gas or the metal vapors laser as the groundwork material, be present most species, output optical maser wavelength the abundantest, use the widest a kind of laser.Extensive use at aspects such as precision calculating, collimation, communication, radar, holographies.Gas laser generally with the gas discharge excitation, in the laser tube of direct current, must have the negative electrode and the anode of a discharge.The stable sphere chamber of the general employing of resonant cavity, an end is a completely reflecting mirror, the other end is an output, is partially reflecting mirror.Therefore higher for resonant cavity resonant cavity process technology technological requirement, need large tracts of land resonance to cause the laser volume excessive for reaching particle beams counter-rotating, thereby limited effect and the application of gas laser on some tiny parts that laser amplifies.
Utilize atmospheric pressure fiber optics microplasma discharge technology that laser is amplified and have important application.Atmospheric pressure fiber optics microplasma discharge technology does not need complicated vacuum equipment, has characteristics such as low cost, low energy consumption, high efficiency, and gas temperature is low during discharge need not cooling near room temperature, and discharge condition is stable, and it is also comparatively obvious to produce the laser amplification effect.Utilize optical fiber micro discharge laser amplification technique not appear in the newspapers as yet up to now.
Summary of the invention
In view of the above-mentioned deficiency of existing in prior technology, the present invention aims to provide optical fiber microplasma discharge laser amplification technique and equipment thereof under a kind of atmospheric pressure, and it is simple in structure, can the He-Ne Lasers light beam of incident be amplified, and output is stable, and effect is obvious.
Technical solution of the present invention is achieved in that
A kind of optical fiber microplasma discharge laser amplification device comprises: He-Ne gas mixes the quartz ampoule of usefulness, and quartz ampoule connects source of the gas through the gas mass flow amount controller respectively through air intake, and the end of quartz ampoule is provided with smooth quartz plate;
It is characterized in that:
The front end of said quartz ampoule is communicated with optical fiber with discharge, and said discharge is with the identical metal electrode of the equidistant parcel width of the outer wall of optical fiber; Said metal electrode alternately connects high voltage source and ground wire successively;
Said high voltage source is a sine ac power supply, and its voltage is that 0-20KV is adjustable, and frequency is that 0-20KHz is adjustable, and the Voltage Peak peak value is 4-9KV, and frequency is not more than 15KHz.
Concrete, the spacing of adjacent metal electrode is 5-30mm, the width of metal electrode is 1-10mm.
Further, also comprise the Tyke oscilloscope, it connects high-voltage probe and current probe respectively, and optical fiber microplasma discharge state is monitored in real time;
Also comprise photomultiplier and spectrometer, its joint detection is used optical fiber, and said detection utilizes collimating slit to get rid of the interference of extraneous light and spurious rays with optical fiber end, to characterizing through level crossing refraction back laser amplification effect.
The present invention discloses said apparatus and carry out the technology that laser amplifies, comprise the steps:
(1) optical fiber microplasma discharge: the He-Ne reacting gas is regulated ratio through the gas mass flow amount controller respectively; Get into fully mixing in the quartz ampoule through air intake; Then discharge with optical fiber in alternating discharge between electrode, the uniform plasma of generation under atmospheric pressure;
(2) laser amplifies: helium neon laser emission laser beam through the terminal smooth quartz plate of quartz ampoule after fibre is used up in overdischarge, thereby realize that population inversion reaches along the amplification on the laser transmission direction;
(3) sign of the real-time monitoring of optical fiber microplasma discharge state and laser amplification effect: be connected high-voltage probe and current probe with the Tyke oscilloscope, optical fiber microplasma discharge state is monitored in real time; And use optical fiber with photoelectric multiplier and spectrometer joint detection, said detection utilizes collimating slit to get rid of the interference of extraneous light and spurious rays with the end of optical fiber, to characterizing through level crossing refraction back laser amplification effect.
Further, in the step (1), high-voltage ac power Voltage Peak peak value is 4-9KV, and frequency is not more than 15KHz.
Further, in the step (1), the He-Ne ratio of gas mixture is 1: (1-9); Preferred He-Ne ratio of gas mixture is 1: (5-7).
Helium and neon are regulated ratio through mass flow controller respectively as reacting gas, and in the quartz ampoule of optical fiber rear end, fully mix.Utilize the structure of alternating discharge between kind electrode under atmospheric pressure, to produce uniform plasma, have its special advantages: simple like discharge mode, need not complicated vacuum equipment, equipment cost is low, and volume is little, and energy consumption is low etc.Utilize along the face micro discharge helium ionization to be excited in the optical fiber tube, metastable afterwards helium through with the neon resonance transfer, ionization by collision with meet mode such as excite, neon is energized into excitation state, make two energy levels of neon atom realize population inversion.After the He-Ne Lasers light beam sees through the terminal smooth quartz plate process discharge optical fiber of quartz ampoule; Because the neon atom of excitation state is in high level; When an external photon with energy h υ just in time be the poor of certain a pair of energy level, then this atom can be under the bringing out of this external photon from high level to the low-lying level transition.And send and bring out photon complete with photon.So photon of incident will two identical photons of outgoing.By the optical fiber microplasma discharge, guaranteed the state of population inversion, can stablize and continue to amplify laser beam.Connect high-voltage probe and current probe with the Tyke oscilloscope simultaneously, optical fiber microplasma discharge state is monitored in real time, and the laser amplification effect is characterized with optical testing instruments such as photomultiplier and spectrometers.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the photo that optical fiber microplasma discharge laser of the present invention amplifies.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
A kind of optical fiber microplasma discharge laser amplification device; As shown in Figure 1; Discharge is wrapped up with the wide copper ring 7 of 10mm in the every separated 10mm distance of optical fiber outer wall, and is alternately connected high voltage source 5 (sine ac power supplies with fine copper wire 6 with optical fiber 8 length 150mm; Voltage adjustable extent 0-20kV, frequency adjustable scope 0-20kHz) and ground wire 16.Reacting gas is through mass flow controller 4 adjusting ratios, and fully mixing in the quartz ampoule 3 of optical fiber rear end.At the applied voltage peak-to-peak value is 4kV-9kV, produces uniform and stable microplasma when frequency is lower than 15kHz.He-Ne laser 1 emission laser beam discharges through terminal smooth quartz plate 2 processes of quartz ampoule behind the optical fiber; Realize that thereby the population inversion and the machine radiation of receiving reach along the amplification on the laser transmission direction; At the He-Ne ratio of gas mixture is 1: 5 between 1: 7 the time, and laser beam has amplified near 50% on the basis of original light intensity.Connect high-voltage probe 1 and current probe 9 with Tyke oscilloscope 11 simultaneously; Optical fiber microplasma discharge state is monitored in real time; And with optical testing instrument joint detection such as photomultiplier and spectrometers 15 with optical fiber 14; Said detection utilizes collimating slit 13 to get rid of the interference of extraneous light and spurious rays with the end of optical fiber, to characterizing through level crossing 12 refraction back laser amplification effects.
The above; Be merely the preferable embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any technical staff who is familiar with the present technique field is equal to replacement or change according to technical scheme of inventing and inventive concept thereof in the technical scope that the present invention discloses, all should be encompassed within protection scope of the present invention.
Claims (6)
1. optical fiber microplasma discharge laser amplification device is characterized in that comprising:
He-Ne gas mixes the quartz ampoule of usefulness, and quartz ampoule connects source of the gas through the gas mass flow amount controller respectively through air intake, and the end of quartz ampoule is provided with smooth quartz plate;
The front end of said quartz ampoule is communicated with optical fiber with discharge, and said discharge is with the identical metal electrode of the equidistant parcel width of the outer wall of optical fiber; Said metal electrode alternately connects high voltage source and ground wire successively;
Said high voltage source is a sine ac power supply, and its voltage is that 0-20KV is adjustable, and frequency is that 0-20KHz is adjustable, and the Voltage Peak peak value is 4-9KV, and frequency is not more than 15KHz.
2. optical fiber microplasma discharge laser amplification device as claimed in claim 1 is characterized in that:
The spacing of adjacent metal electrode is 5-30mm, and the width of metal electrode is 1-10mm.
3. according to claim 1 or claim 2 optical fiber microplasma discharge laser amplification device is characterized in that also comprising:
The Tyke oscilloscope, it connects high-voltage probe and current probe respectively;
Photomultiplier and spectrometer, its joint detection is used optical fiber, and said detection is provided with collimating slit with optical fiber end;
Level crossing, it places discharge with optical fiber and the end of detecting with optical fiber, and its minute surface is miter angle with optical fiber and detection respectively with the collimating slit of optical fiber with discharging.
4. an optical fiber microplasma discharge laser amplification technique comprises the steps:
(1) optical fiber microplasma discharge: the He-Ne reacting gas is regulated ratio through the gas mass flow amount controller respectively; Get into fully mixing in the quartz ampoule through air intake; Then discharge with optical fiber in alternating discharge between electrode, the uniform plasma of generation under atmospheric pressure;
(2) laser amplifies: helium neon laser emission laser beam through the terminal smooth quartz plate of quartz ampoule after fibre is used up in overdischarge, thereby realize that the population inversion and the machine radiation of receiving reach along the amplification on the laser transmission direction;
(3) sign of the real-time monitoring of optical fiber microplasma discharge state and laser amplification effect: be connected high-voltage probe and current probe with the Tyke oscilloscope, optical fiber microplasma discharge state is monitored in real time; And use optical fiber with photoelectric multiplier and spectrometer joint detection, said detection utilizes collimating slit to get rid of the interference of extraneous light and spurious rays with the end of optical fiber, to characterizing through level crossing refraction back laser amplification effect;
In the step (1), high-voltage ac power Voltage Peak peak value is 4-9KV, and frequency is not more than 15KHz.
5. optical fiber microplasma discharge laser amplification technique as claimed in claim 4 is characterized in that: in the step (1), the He-Ne ratio of gas mixture is 1: (1-9).
6. optical fiber microplasma discharge laser amplification technique as claimed in claim 5, it is characterized in that: the He-Ne ratio of gas mixture is 1: (5-7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110402074 CN102377097B (en) | 2011-12-06 | 2011-12-06 | Optical fiber plasma discharge laser amplification device and technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110402074 CN102377097B (en) | 2011-12-06 | 2011-12-06 | Optical fiber plasma discharge laser amplification device and technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102377097A true CN102377097A (en) | 2012-03-14 |
| CN102377097B CN102377097B (en) | 2013-05-01 |
Family
ID=45795296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110402074 Expired - Fee Related CN102377097B (en) | 2011-12-06 | 2011-12-06 | Optical fiber plasma discharge laser amplification device and technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102377097B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103025042A (en) * | 2012-12-07 | 2013-04-03 | 华中科技大学 | Radio frequency discharge device and hollow-core fiber radio frequency discharge system |
| CN106954330A (en) * | 2017-03-07 | 2017-07-14 | 河北大学 | The apparatus and method for measuring plasma filament swing circle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1219789A (en) * | 1997-12-09 | 1999-06-16 | 北京理工大学 | Technique of atomic gas radio frequency discharge in slat waveguide |
| US20060262825A1 (en) * | 2005-05-23 | 2006-11-23 | Rocca Jorge J | Capillary discharge x-ray laser |
| CN101165977A (en) * | 2006-10-20 | 2008-04-23 | 香港理工大学 | Optical fibre gas laser and optical fiber type ring laser gyroscope possessing the laser |
| JP2009026854A (en) * | 2007-07-18 | 2009-02-05 | Komatsu Ltd | Driver laser for extreme ultraviolet light source |
-
2011
- 2011-12-06 CN CN 201110402074 patent/CN102377097B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1219789A (en) * | 1997-12-09 | 1999-06-16 | 北京理工大学 | Technique of atomic gas radio frequency discharge in slat waveguide |
| US20060262825A1 (en) * | 2005-05-23 | 2006-11-23 | Rocca Jorge J | Capillary discharge x-ray laser |
| CN101165977A (en) * | 2006-10-20 | 2008-04-23 | 香港理工大学 | Optical fibre gas laser and optical fiber type ring laser gyroscope possessing the laser |
| JP2009026854A (en) * | 2007-07-18 | 2009-02-05 | Komatsu Ltd | Driver laser for extreme ultraviolet light source |
Non-Patent Citations (1)
| Title |
|---|
| 《Applied Physics A》 20100618 Masahito Katto etc Development of ultra-short pulse VUV laser system for nanoscale Processing 297-301 1-6 第2010卷, 第101期 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103025042A (en) * | 2012-12-07 | 2013-04-03 | 华中科技大学 | Radio frequency discharge device and hollow-core fiber radio frequency discharge system |
| CN103025042B (en) * | 2012-12-07 | 2014-12-10 | 华中科技大学 | Radio frequency discharge device and hollow-core fiber radio frequency discharge system |
| CN106954330A (en) * | 2017-03-07 | 2017-07-14 | 河北大学 | The apparatus and method for measuring plasma filament swing circle |
| CN106954330B (en) * | 2017-03-07 | 2020-03-31 | 河北大学 | Device and method for measuring plasma filament rotation period |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102377097B (en) | 2013-05-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Liu et al. | Unexpected sensitivity of nitrogen ions superradiant emission on pump laser wavelength and duration | |
| Soloviev et al. | Fast electron generation using PW-class PEARL facility | |
| CN105655851A (en) | Non-relativistic electron beam induced dielectric waveguide-based terahertz radiation source | |
| CN108322989A (en) | A kind of device of plasma resonance THz wave | |
| CN102377097B (en) | Optical fiber plasma discharge laser amplification device and technology | |
| Lazzarini et al. | 50 MeV electron beams accelerated by a terawatt scalable kHz laser | |
| CN111082295B (en) | Mode-locked pulse light source based on hydrazone organic matter and preparation method | |
| Zhang et al. | Segmented pulsed discharge for metastable argon lasing medium | |
| Wieman et al. | Asymmetric line shapes for weak transitions in strong standing-wave fields | |
| CN103078239B (en) | Microwave gas excitation device and method | |
| Boreysho et al. | A 12-kW continuous-wave chemical oxygen-iodine laser | |
| Dou et al. | High-conversion efficiency pulse compression by stimulated Raman scattering and laser induced breakdown in water | |
| Sun | Modeling of Output Spectra and Numerical Simulation of Thulium-doped Broadband Fiber Light Sources at 1400-1520nm, 1800-2000nm | |
| CN203849516U (en) | Plasma switch for laser pulse shaping | |
| Ivanov et al. | Single shot temporal characterization of SASE XUV FEL Pulses | |
| CN109462137B (en) | One kind picosecond terawatt (TW) CO2Laser amplifier pump arrangement | |
| CN214752523U (en) | Optical fiber laser experiment teaching device with double resonant cavity structure | |
| Li et al. | Nonperturbative generation of above-threshold harmonics from pre-excited argon atoms in intense mid-infrared laser fields | |
| Krupke | Performance of laser-pumped quantum counters | |
| CN103887699B (en) | Highpowerpulse air-flow chemical laser device | |
| Lawler et al. | Radiative lifetimes in Ni i i | |
| Kanai et al. | Supercontinuum-seeded 4-micron KTA optical parametric amplifier for seeding TW-class Fe: ZnSe multipass amplifiers | |
| Shan et al. | High power narrow linewidth fiber laser based on superfluorescent white noise modulation | |
| Phelps et al. | Two-Photon Spectroscopy in Rb for an Optical Frequency Standard | |
| Sharma et al. | Laser pulse compression and amplification via Raman backscattering in plasma |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20151206 |
|
| EXPY | Termination of patent right or utility model |