CN101295852A - Oxygen iodine laser for co-cavity discharging and initiating enclosed circulating impulse - Google Patents
Oxygen iodine laser for co-cavity discharging and initiating enclosed circulating impulse Download PDFInfo
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- CN101295852A CN101295852A CNA2008100645415A CN200810064541A CN101295852A CN 101295852 A CN101295852 A CN 101295852A CN A2008100645415 A CNA2008100645415 A CN A2008100645415A CN 200810064541 A CN200810064541 A CN 200810064541A CN 101295852 A CN101295852 A CN 101295852A
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Abstract
The invention discloses a closed cycle pulsed oxygen-iodine laser initiated by common cavity discharge and an output method thereof, which relate to a laser and a method utilizing the laser to carry out laser output. The laser of the invention comprises a gas storage cavity (1), a fan (2), a cooler (3), a discharge cavity (4), a preionization needle (5), an energy storage cavity (6), a pulse power switch (7), a high voltage trigger (8) and a high voltage resonant power supply (9). CH3I, O2, NO, N2, He (Ar, Xe) and other gases with certain pressure and certain proportion are pumped in the laser cavity; the gases are in closed circulation, discharge and excite laterally by high voltage pulse, and finish the initiation of singlet oxygen and the discharge and dissociation of molecular iodine in the same discharge cavity, and the processes of the generation of the singlet oxygen and atomic iodine, the energy transfer of the singlet oxygen, the initiation of the atomic iodine and laser transition in one step, thereby obtaining the medium and small power pulsed oxygen-iodine laser initiated by electrical discharge, which has compact structure, low cost and nontoxic medium.
Description
Technical field
The present invention relates to a kind of laser and utilize its method of carrying out laser output, be specifically related to a kind of chemical laser of the initiation of discharging and utilize it to carry out the method that co-cavity discharging causes the output of sealing and circulating pulse oxygen iodine laser simultaneously.
Background technology
Chemical oxygen iodine laser is the shortest macro-energy chemical laser of present wavelength, its optical maser wavelength is 1.315 μ m, because it has high power, short wavelength and the characteristics that are in atmospheric window, simultaneously higher optical fiber coupling efficiency and lower fiber transmission attenuation, be fit to the optical fiber long-distance transmissions, therefore bright prospects arranged in national defence and industrial application.But its device is complicated because the working method of chemical reaction makes, operation material has toxicity, cost height, has limited the application of chemical oxygen iodine laser at civil area.Therefore, develop the pulse oxygen-iodine laser that discharge simple and compact for structure, security of operation causes, the performance of oxygen-iodine laser is better brought into play, enter industry, medical treatment and research application field, make oxygen-iodine laser become the laser of a kind of " general ", have prior action of technical progress from the laser of a kind of " special ".
The research of discharge oxygen-iodine laser has obtained very big development, but numerous research work is to concentrate on respectively on the productive rate and the molecular iodine that how effectively to dissociate of the singlet oxygen that how to improve the discharge initiation, and the purpose of doing like this is in order to improve the performance of existing high-power oxygen-iodine laser.And the market-oriented application study work of oxygen-iodine laser is not attached most importance to laser power, mainly is still that the nothing of densification, miniaturization, the working media of device poisons, on the low cost.
Summary of the invention
The purpose of this invention is to provide a kind of co-cavity discharging and cause sealing and circulating pulse oxygen-iodine laser and output intent thereof simultaneously, make singlet oxygen and atom iodine realize with cavity discharging cause, operation material all is gaseous state and can sealing and circulating, and by the short pulse discharge effective excitation and quick heat radiating are united, guaranteed the operate as normal of laser.
Co-cavity discharging of the present invention causes sealing and circulating pulse oxygen-iodine laser simultaneously by air storing cavity, blower fan, cooler, discharge cavity, the preionization pin, energy-storing chamber, pulse power switch, high-voltage trigger and high pressure resonant power are formed, be provided with cooler and blower fan in the air storing cavity, the top of air storing cavity connects discharge cavity, be provided with parallel sparking electrode in the discharge cavity, be the Jiang Shi profile, the electrode both sides are provided with the preionization pin, before the discharge cavity, the rear end is respectively equipped with output window and speculum, energy-storing chamber is arranged on the discharge cavity, be provided with accumulator in the energy-storing chamber, pulse power switch is arranged on the top of energy-storing chamber, the accumulator in the energy-storing chamber and the power supply of pulse power switch are electrically connected with the high pressure resonant power, and the conducting of pulse power switch triggers control by high-voltage trigger.
Co-cavity discharging of the present invention causes sealing and circulating pulse oxygen iodine laser output method simultaneously: charge into laser working medium CH in laser cavity simultaneously
3I, O
2, inert gas, control inflation total pressure is 3～100Torr, wherein O
2: 2～50Torr, CH
3I:0.2～10Torr, inert gas: 0.5～90Torr, gas ratio is controlled at O
2: CH
3I: inert gas=0.2～0.5: 0.01～0.2: 0.79～0.3; The confined gas circulation, by the high-voltage pulse transverse-discharge excitation, finishing the initiation of singlet oxygen and the discharge of molecular iodine in same discharge cavity simultaneously dissociates, the energy that one step was finished generation, the singlet oxygen of singlet oxygen and atom iodine shifts, the exciting and the laser transition process of atom iodine, realizes laser output.
Co-cavity discharging of the present invention causes sealing and circulating pulse oxygen-iodine laser simultaneously, is to charge into CH in laser cavity
3I, O
2And NO, N
2, He certain pressure, certain proportion gases such as (Ar, Xe), the confined gas circulation, by the high-voltage pulse transverse-discharge excitation, finishing the initiation of singlet oxygen and the discharge of molecular iodine in same discharge cavity simultaneously dissociates, the energy that one step was finished generation, the singlet oxygen of singlet oxygen and atom iodine shifts, the exciting and the laser transition process of atom iodine, thereby obtains compact conformation, cost middle low power discharge low, nontoxic medium causes the pulse oxygen-iodine laser.
Description of drawings
Fig. 1 is the structural representation that co-cavity discharging of the present invention causes sealing and circulating pulse oxygen-iodine laser simultaneously.
Embodiment
Embodiment one: as shown in Figure 1, the co-cavity discharging of present embodiment causes sealing and circulating pulse oxygen-iodine laser simultaneously and is made up of air storing cavity 1, blower fan 2, cooler 3, discharge cavity 4, preionization pin 5, energy-storing chamber 6, pulse power switch 7, high-voltage trigger 8 and high pressure resonant power 9, be provided with two groups of coolers 3 and blower fan 2 in the air storing cavity 1, form laser gas circulation and heat-exchange system; Described blower fan 2 is centrifugal blower or crossflow fan.The top of air storing cavity 1 connects discharge cavity 4, establishes two parallel sparking electrodes in the discharge cavity 4, is the Jiang Shi profile, and the electrode both sides are provided with 5 liang of rows of uv preionization pin.The front and back ends of discharge cavity 4 is provided with output window, speculum, on discharge cavity 4, be installed on and form energy-storing chamber 6 by higfh-tension ceramics electric capacity, inductance component, in be filled with insulating oil, pulse power switch 7 is installed on the top of energy-storing chamber 6, the accumulator in the energy-storing chamber 6 and the power supply of pulse power switch 7 are supplied with by high pressure resonant power 9 (high-voltage DC power supply and L-C resonant power), and the trigger impulse of pulse power switch 7 is provided by high-voltage trigger 8.
Air storing cavity 1: air storing cavity 1 is designed to the outside the frame structure that supporting bracket is arranged in the reinforcement, ellipse, stainless steel material.Since after the laser bodies assembling, very high to the sealing property requirement, and air storing cavity 1 is the combination that is connected sealing with some other device, so all sealing surfaces of air storing cavity 1 all design by high vacuum.
The switching system of laser: form by two axial flow blowers, pulse power switch 7, heat exchanger, filter, oil cooling system.Pulse power switch 7 is the high power rotary switch, it forms the double gap closed-cycle system by pair of stationary electrodes and rotation electrode, the high speed in reversed direction sealing and circulating of gas between two gaps during work is taken away the heat of high-temperature plasma and generation thereof fast, and gas-insulated is recovered rapidly.The rotation electrode axle links to each other with the high speed direct current machine by magnetic coupler.The gas air inlet/outlet is all used the polytetrafluoroethylene pipe insulation.The ground connection transmission line is selected copper plate for use.Upper/lower electrode is selected dystectic cerium tungsten material for use.Electrode tip holder adopts the good oxygen-free copper of electric conductivity, and rivets with electrode, guarantees that contact is good.Electrode tip holder and electrode contact surface annular knurl are handled, and improve conduction, thermal conductivity.
Energy storage discharge cavity: form with upper and lower electrode and preionization circuit by energizing circuit, electric energy storage unit and sharpener element (oil immersion).Energy storage unit connects incorporate system with the low inductance of discharge cavity, but its interelectrode lateral flow working gas gas plasma impedance rapid drawdown after preionization, apply high pressure generation discharge again and can excite working gas, and, go out laser from optics output window one-way radiation by the optical resonator acquisition gain laser that vibrates.The energy storage discharge cavity: have separated into two parts altogether, a part is an energy-storing chamber 6, and another part is a discharge cavity 4, and two parts are to be isolated by the insulation board of thick 40mm; Dress is isolated inductance, storage capacitor, sharpening capacitor and charging inductance in energy-storing chamber 6 energy storage section.Discharge cavity 4 parts are made up of top electrode, bottom electrode, preionization pin and anti-creep electroceramics corrugated plating, upper/lower electrode is to be made by stainless steel material, profile is to be developed by Jiang Shi electrode profile, preionization pin 5 is each 1 row in the sparking electrode both sides, preionization pin 5 spacings 20～30mm is made by the electrode material of anti-the ablation, and bottom electrode directly links to each other with the discharge cavity casing, in order to prevent the upper/lower electrode distortion, the power-on and power-off pole plate has all adopted rigidity good material and corresponding thickness; Ceramic corrugated plating is arranged between top electrode and the ionization needle, and preionization pin 5 also has ceramic corrugated plating with casing, and plays guide functions, and bottom electrode also has baffler.
The simple course of work of laser: under the control of high-voltage trigger, the rotary switch conducting, under the effect of preionization mechanism, the impedance of laser intracavity gas is descended, the working gas discharge in the discharge cavity rapidly, form glow plasma, the initiation singlet oxygen is also finished the discharge of molecular iodine simultaneously and is dissociated, and singlet oxygen and atom iodine react, and gives atom iodine with the energy delivery of singlet oxygen, excitation state iodine atom generation transition, radiation laser.
Embodiment two: the co-cavity discharging of present embodiment causes sealing and circulating pulse oxygen iodine laser output method simultaneously and is: charge into laser working medium CH in laser cavity simultaneously
3I, O
2, N
2(NO), He (Ar, Xe), control inflation total pressure is 3～100Torr, wherein O
2: 2～50Torr, CH
3I:0.2～10Torr, N
2(NO): 0.5～50Torr, He (Ar, Xe): 0.5～90Torr, wherein N
2(NO) gas is not to add, and gas ratio is controlled at O
2: CH
3I: He (Ar, Xe)=0.2～0.5: 0.01～0.2: 0.79～0.3; The confined gas circulation, by the high-voltage pulse transverse-discharge excitation, finishing the initiation of singlet oxygen and the discharge of molecular iodine in same discharge cavity simultaneously dissociates, the energy that one step was finished generation, the singlet oxygen of singlet oxygen and atom iodine shifts, the exciting and the laser transition process of atom iodine, realizes laser output.
In the present embodiment, the described discharge excitation time is the nanosecond order of magnitude, can be hundreds of nanosecond～several microseconds.Discharge voltage is 30～50KV.The initiation of described singlet oxygen and the discharge of molecular iodine are dissociated, and the preionization process also participates in the initiation of singlet oxygen and the discharge of molecular iodine is dissociated.
Claims (7)
1, co-cavity discharging causes sealing and circulating pulse oxygen-iodine laser simultaneously, it is characterized in that described laser is by air storing cavity (1), blower fan (2), cooler (3), discharge cavity (4), preionization pin (5), energy-storing chamber (6), pulse power switch (7), high-voltage trigger (8) and high pressure resonant power (9) are formed, be provided with cooler (3) and blower fan (2) in the air storing cavity (1), the top of air storing cavity (1) connects discharge cavity (4), discharge cavity is provided with parallel sparking electrode in (4), be the Jiang Shi profile, the electrode both sides are provided with preionization pin (5), before the discharge cavity (4), the rear end is respectively equipped with output window and speculum, energy-storing chamber (6) is arranged on the discharge cavity (4), energy-storing chamber is provided with accumulator in (6), pulse power switch (7) is arranged on the top of energy-storing chamber (4), the accumulator in the energy-storing chamber (6) and the power supply of pulse power switch (7) are electrically connected with high pressure resonant power (9), and the conducting of pulse power switch (7) triggers control by high-voltage trigger (8).
2, co-cavity discharging according to claim 1 causes sealing and circulating pulse oxygen-iodine laser simultaneously, it is characterized in that described air storing cavity (1) is designed to the outside and has the oval frame of supporting bracket shelf structure is arranged in the reinforcement.
3, co-cavity discharging according to claim 1 causes sealing and circulating pulse oxygen-iodine laser simultaneously, it is characterized in that described pulse power switch (7) is the high power rotary switch.
4, co-cavity discharging according to claim 1 causes sealing and circulating pulse oxygen-iodine laser simultaneously, it is characterized in that described blower fan (2) is centrifugal blower or crossflow fan.
5, co-cavity discharging causes sealing and circulating pulse oxygen iodine laser output method simultaneously, it is characterized in that described method is: charge into laser working medium CH simultaneously in the described co-cavity discharging of claim 1 causes the laser cavity of sealing and circulating pulse oxygen-iodine laser simultaneously
3I, O
2, inert gas, control inflation total pressure is 3～100Torr, wherein O
2: 2～50Torr, CH
3I:0.2～10Torr, inert gas: 0.5～90Torr, gas ratio is controlled at O
2: CH
3I: inert gas=0.2～0.5: 0.01～0.2: 0.79～0.3; The confined gas circulation, by the high-voltage pulse transverse-discharge excitation, finishing the initiation of singlet oxygen and the discharge of molecular iodine in same discharge cavity simultaneously dissociates, the energy that one step was finished generation, the singlet oxygen of singlet oxygen and atom iodine shifts, the exciting and the laser transition process of atom iodine, realizes laser output.
6, co-cavity discharging according to claim 5 causes sealing and circulating pulse oxygen iodine laser output method simultaneously, it is characterized in that the described discharge excitation time is the nanosecond order of magnitude.
7, co-cavity discharging according to claim 5 causes sealing and circulating pulse oxygen iodine laser output method simultaneously, it is characterized in that the initiation of described singlet oxygen and the discharge of molecular iodine dissociate, the preionization process also participates in the initiation of singlet oxygen and the discharge of molecular iodine is dissociated.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100645415A CN101295852A (en) | 2008-05-19 | 2008-05-19 | Oxygen iodine laser for co-cavity discharging and initiating enclosed circulating impulse |
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|---|---|---|---|
| CNA2008100645415A CN101295852A (en) | 2008-05-19 | 2008-05-19 | Oxygen iodine laser for co-cavity discharging and initiating enclosed circulating impulse |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129783A (en) * | 2016-08-19 | 2016-11-16 | 海南师范大学 | A kind of high-voltage great-current Single Pulse Discharge switch and high energy excimer laser |
| CN106785819A (en) * | 2015-11-23 | 2017-05-31 | 中国科学院大连化学物理研究所 | A kind of electric excitation creating singlet oxygen generating means |
| CN109103734A (en) * | 2017-06-21 | 2018-12-28 | 中国科学院大连化学物理研究所 | Quasi-static noncurrent discharge excitation oxygen-iodine laser |
| CN114196533A (en) * | 2021-11-01 | 2022-03-18 | 上海盟德生物科技有限公司 | Microchannel cell electrotransformation instrument |
| CN115347439A (en) * | 2022-08-23 | 2022-11-15 | 西北核技术研究所 | Gas laser and method of outputting pulsed laser light |
-
2008
- 2008-05-19 CN CNA2008100645415A patent/CN101295852A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785819A (en) * | 2015-11-23 | 2017-05-31 | 中国科学院大连化学物理研究所 | A kind of electric excitation creating singlet oxygen generating means |
| CN106129783A (en) * | 2016-08-19 | 2016-11-16 | 海南师范大学 | A kind of high-voltage great-current Single Pulse Discharge switch and high energy excimer laser |
| CN106129783B (en) * | 2016-08-19 | 2019-07-26 | 海南师范大学 | A kind of high-voltage great-current Single Pulse Discharge switch and high energy excimer laser |
| CN109103734A (en) * | 2017-06-21 | 2018-12-28 | 中国科学院大连化学物理研究所 | Quasi-static noncurrent discharge excitation oxygen-iodine laser |
| CN114196533A (en) * | 2021-11-01 | 2022-03-18 | 上海盟德生物科技有限公司 | Microchannel cell electrotransformation instrument |
| CN115347439A (en) * | 2022-08-23 | 2022-11-15 | 西北核技术研究所 | Gas laser and method of outputting pulsed laser light |
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Open date: 20081029 |