CN102208749B - Intermediate and far infrared two-waveband laser - Google Patents
Intermediate and far infrared two-waveband laser Download PDFInfo
- Publication number
- CN102208749B CN102208749B CN2011100951198A CN201110095119A CN102208749B CN 102208749 B CN102208749 B CN 102208749B CN 2011100951198 A CN2011100951198 A CN 2011100951198A CN 201110095119 A CN201110095119 A CN 201110095119A CN 102208749 B CN102208749 B CN 102208749B
- Authority
- CN
- China
- Prior art keywords
- laser
- waveband
- gain
- gas injection
- tube
- 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.)
- Active
Links
Images
Abstract
The invention discloses an intermediate and far infrared two-waveband laser, comprising a CO2 laser gain module and a DF laser gain module, wherein the CO2 laser gain module comprises a CO2 laser discharge tube, a CO2 laser gain generator and a CO2 laser heat exchanging pipe which are in a sequential connection; the DF laser gain module comprises a DF laser discharge tube, a DF laser gain generator and a DF laser heat exchanging pipe in a sequential connection; the two heat exchanging pipes are connected with a vacuum system; the two laser gain modules are arranged side by side; the adjacent inner sides of the CO2 laser gain generator and the DF laser gain generator are mutually communicated to form a gain medium zone of the two-waveband laser; two sides of the gain medium zone are respectively connected with a two-waveband full-reflecting mirror and a two-waveband output mirror by pipelines; and the two-waveband full-reflecting mirror and the two-waveband output mirror form a laser resonant cavity which can extract two types of gain media. The laser is convenient to operate, stable in work and simple in adjustment of the light path, and can realize composite light emission of the intermediate and far infrared two-waveband lasers effectively.
Description
Technical field
The present invention relates to a kind of laser, relate in particular to a kind of laser that can realize the bright dipping of two waveband Laser Combined.
Background technology
Say that from physics knowledge the object that all temperature are higher than absolute 0K all has infrared emanation.To the object of a certain temperature, the maximum wavelength location of amount of radiation is followed Wien's law.The infrared radiation of object mostly will could arrive optical system through atmosphere, and the less wave band of some decay is known as atmospheric window, and 3 the most frequently used infrared atmospheric window mouths are: 1～3 micron, and 3～5 microns and 8～12 microns.The exhaust temperature of the engine of equipments such as various aircraft, motor vehicle is distributed in 600K～1000K scope; The Temperature Distribution of various organisms is at 250K～350K, and corresponding infrared emanation peak wavelength scope then is respectively 3～5 microns (medium wave is infrared) and 8～12 microns (LONG WAVE INFRARED, far infrared).Therefore, these two wave bands have very important application aspect a lot, all be operated in this two wave bands like the focal plane device in infrared night vision/imaging/detection system.
3～5 microns and 8～12 microns infrared focal plane devices and system thereof are one of focus and emphasis of current research and application, two waveband or multiband survey with device development be current and development in future trend.Along with in the research and the application of (3～5 microns), (8～12 microns) infrared double-waveband focus planardetector far away; Demarcation and effect study about its signal input and output also must need to carry out; Therefore, develop satisfy in these researchs and the continuous wave of application development demand, far infrared two waveband laser is significant.In addition, in this, far infrared two waveband laser has important use at aspects such as laser radar, laser ranging and location.During we believe, far infrared two waveband continuous-wave laser can be applied to more background and occasion; Key be can develop in the high-performance that satisfies application demand, far infrared two waveband laser device; This laser requires working stability; Easy and simple to handle, can the long-time continuous bright dipping, possess good serviceability.
From the angle of laser development, the long wave part in the two waveband laser can adopt CO
2The sharp of molecule penetrated, the ripe and extensive use of corresponding device; The medium wave part can adopt the DF molecule to swash and penetrate; Its principle is ripe; The Combustion Driven DF laser output power has been realized MW class; But the general continuous operating time is very short, and with regard to domestic present technology, the electric excitation Continuous Wave DF laser of directional energy technical research institute of National University of Defense Technology development can be realized stablizing, the long-time continuous bright dipping.
As shown in Figure 1, if two laser (CO
2Laser and DF laser), two groups of resonant cavity bright dippings, through setting up the synthetic light path system of follow-up dual-beam the laser of two bundle different-wavebands is synthesized again, in also can realizing, far infrared laser combination bright dipping.Yet this technical scheme has following obvious weak point:
The laser five dimension disalignments (space three-dimensional adds the upper angle bidimensional) of (1) two bundle different-waveband need the multiaspect mirror just can make their optical axis coincidence, so light path regulates trouble, and receive interference such as extraneous vibration easily;
When (2) restarting again after laser shutdown a period of time, laser beam axis with have certain deviation before, the light path of promptly synthetic two bundle laser needs to regulate again;
(3) a plurality of eyeglasses need be coated with the infrared double-waveband rete in the light path, are coated with two waveband rete complex process, cost an arm and a leg;
(4) since in infrared, two kinds of laser human eyes of far infrared are all invisible, the collimated light that need regulate as optical cavity by visible laser and the guide lights of subsequent optical path adjusting, or observe facula position through aids such as thermal imagers.Yet guide lights can not overlap with the optical axis of infrared laser fully, and supplementary meanss such as thermal imager can only be used to observe facula position, therefore make regulate in this way accomplish after, in, the registration of far infrared two bundle laser beam axis is not high.
Except that technique scheme, also there be not at present to satisfy (3～5 microns), (8～12 microns) infrared double-waveband laser device far away in the high-performance of practical application request.
Summary of the invention
The technical problem that the present invention will solve is the deficiency that overcomes prior art, provide a kind of easy to operate, working stability, light path regulate simple, can the long-time continuous bright dipping and can effectively realize in infrared and far infrared two waveband Laser Combined bright dipping in, far infrared two waveband laser.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes be a kind of in, far infrared two waveband laser, said in, far infrared two waveband laser comprises CO
2Laser gain module and DF laser gain module, said CO
2Laser gain module comprises the CO that is connected successively
2Laser tube, CO
2Laser gain generator and CO
2Laser heat-exchange tube, said DF laser gain module comprise DF laser tube, DF laser gain generator and the DF laser heat-exchange tube that is connected successively, said CO
2Laser heat-exchange tube and DF laser heat-exchange tube all are connected in vacuum system, said CO
2Laser gain module and DF laser gain module are arranged side by side each other, said CO
2The laser gain generator is interconnected with the inboard that DF laser gain generator abuts mutually and forms the gain medium zone of said two waveband laser; The both sides of said gain medium zone connect two waveband total reflective mirror and two waveband outgoing mirror respectively through pipeline, are formed with one between said two waveband total reflective mirror and the two waveband outgoing mirror and extract CO in the said gain medium zone
2The laserresonator of gain medium and DF laser medium.In of the present invention, in the far infrared two waveband laser; Medium wave adopts the cold reaction pumping system formation of fluorine atom and deuterium gas to fluoridize the deuterium molecule gain media; Long wave utilizes Near resonance oscillating to pass can principle form the carbon dioxide molecule gain media; This two media forms the gain media of two waveband laser of the present invention side by side; Extract through same group of two waveband transmission rete stable cavity or reflective coating unsteady cavity, thus the output of (3～5 microns), (8～12 microns) infrared double-waveband continuous wave laser far away in same laser, producing simultaneously.
In above-mentioned, in the far infrared two waveband laser, said gain medium zone comprises and is positioned at said CO
2CO in the laser gain generator
2Gain medium district and the DF gain medium district that is positioned at said DF laser gain generator, said CO
2Gain medium district and DF gain medium district are arranged side by side, between preferably form through air curtain isolated.This air curtain is preferably the N that forms behind the logical nitrogen
2Air curtain.
In above-mentioned, in the far infrared two waveband laser, the preferred pumping reaction system of said DF laser gain module is preferably: the fluorine source gas (referring to contain the gas of F atom) that feeds in the said DF laser tube can be NF
3, SF
6, CF
4, F
2Deng, but be preferably NF
3, the complementary gas of discharge that feeds in the said DF laser tube can be He, Ar, N
2, O
2, C
2H
6Deng, be preferably He; The fuel gas that feeds in the said DF laser gain generator is D
2, the diluent gas that feeds in the said DF laser gain generator is He.
The reaction principle of the preferred pumping reaction system of above-mentioned DF laser gain module is following:
The discharge of fluorine source is dissociated: NF
3+ He → NF
i+ (3-i) F+He, i≤2 (1)
Pumping reaction: F+D
2→ DF (υ)+D (2).
In above-mentioned, in the far infrared two waveband laser, said CO
2The pumping reaction system of laser gain module is preferably: said CO
2The discharge excitation gas that feeds in the laser tube is N
2, said CO
2The complementary gas of the discharge that feeds in the laser tube is He; Said CO
2It can gas be CO that the resonance that feeds in the laser gain generator passes
2The reaction principle of this kind pumping reaction system is following, promptly earlier with N
2Gas is injected in the discharge tube with He gas, produces excitation state N
2Molecule, excitation state N
2Molecule again with ground-state CO
2Molecular resonance passes ability, at CO
2Generate excitation state CO in the laser gain generator
2Molecule:
Discharge excitation: N
2+ He → N
2(υ)+He (3)
Resonance passes ability: N
2(υ)+CO
2→ N
2+ CO
2(υ) (4).
In above-mentioned, in the far infrared two waveband laser, said DF laser tube and CO
2Laser tube all preferably adopts HVDC glow discharge.The structure of two kinds of laser tubes can be identical, also can change according to application demand; Single discharge tube form can be adopted, also discharge tube array can be adopted; The negative electrode of discharge tube, anode can be selected multiple shape such as pin, ring, plate for use and select multiple materials such as nickel, stainless steel, copper, aluminium according to application demand.
In above-mentioned, in the far infrared two waveband laser, compare CO with the DF laser medium
2Laser medium swashs that to penetrate the district long; After the gain peak position is more leaned on; This is concerning the two waveband laser of the present invention that adopts common laserresonator; Can realize the coupling of two kinds of laser gain medium peaks (peak of two kinds of gain medias is the optimal light shaft position of laser) through position translation, that is: make CO
2The position that mixing pumping and relaxation reaction take place in the laser gain generator is positioned at the upper reaches of DF laser gain generator relevant position.Concrete, said DF laser gain generator comprises upper component and lower member, each preferably is provided with a D in said upper component and the lower member
2Gas injection tube, said D
2Respectively be provided with the D that a row is communicated with said gain medium zone (being DF gain medium district) on the gas injection tube
2Gas injection hole is arranged in the D of upper component
2Gas injection hole and the D that is arranged in lower member
2The gas injection hole interleaved is arranged.Said CO
2The laser gain generator comprises top assembly and lower component equally, and each preferably is provided with at least five CO in said top assembly and the lower component
2Gas injection tube, every CO
2It (is CO with said gain medium zone that gas injection tube is provided with a row
2The gain medium district) CO that is communicated with
2Gas injection hole is arranged in the CO of top assembly
2Gas injection hole and the CO that is arranged in lower component
2The gas injection hole interleaved is arranged.Through injecting the position difference of pumping reacting gas, the gain peak position that can make two media be used for the laser extraction is realized coupling preferably.
In above-mentioned, in the far infrared two waveband laser, the laserresonator that said two waveband total reflective mirror and two waveband outgoing mirror are formed extracts excitation state DF molecule and CO
2The gain that molecule forms; For two waveband laser of the present invention; Polytype stable cavity and unsteady cavity all are suitable for; Intracavity or external cavity type structure also all are feasible; Laserresonator among the present invention preferably adopts the intracavity stable resonator, and mirror holder adopts the two-dimensional quadrature governor motion, and collimation can lock after accomplishing; Optical axis position can carry out front and back through the slider plate of vacuum passage both sides to be regulated, thereby satisfies the related request of two waveband laser optical axis coupling.
In the laserresonator of above-mentioned two waveband total reflective mirror and two waveband outgoing mirror composition; Said two waveband total reflective mirror is preferably the concave mirror that is coated with metal film; During said two waveband outgoing mirror then is preferably and is coated with, the level crossing of far infrared two waveband transmission film; Window material need in infrared (3 microns～5 microns) and far infrared (8 microns～12 microns) two waveband high transmittance (like the zinc selenide window) is all arranged, said laserresonator then is preferably the plano-concave stable cavity that said concave mirror and said level crossing are formed.Because two groups of gain medias are by same group of laserresonator output laser, therefore in optical axises infrared, two kinds of laser of far infrared overlap fully, the facular model coupling is good.
In above-mentioned, in the far infrared two waveband laser, said DF laser heat-exchange tube and CO
2Laser heat-exchange tube inner packet contains the water-cooled pipeline, and effect is that laser waste gas is cooled.Said vacuum system mainly is made up of vacuum pump and vacuum pipe, and its function is to two waveband laser of the present invention provides the work of keeping required pressure, and takes the waste gas behind the extraction overpower rapidly away.For this reason, answer vacuum seal to connect between each assembly of two waveband laser of the present invention.
Compared with prior art, the invention has the advantages that:
(1) two waveband laser of the present invention does not need to set up in addition complex optical path two bundle laser is synthesized, and the adjusting of laserresonator and subsequent optical path is very convenient, and system is simple more, reliably;
(2) two waveband laser of the present invention is through gains infrared in the same group of chamber mirror extraction, two kinds of laser mediums of far infrared; Optical axises infrared, two kinds of laser of far infrared can overlap fully in the output; The facular model matching is good, is fit to long-distance transmissions more and uses;
(3) each assembly can overall package in the two waveband laser of the present invention, and the mobility of system is better, transports, operates and use convenient.
(4) because HVDC glow discharge is very stable; The gas flow temperature that two waveband laser of the present invention produces is lower; During the power output of laser not high (hectowatt magnitude); Therefore working gas and circuit power consumption are all smaller, and used heat can be discharged rapidly, two waveband laser of the present invention steady operation for a long time;
(5) in addition, because DF laser gain module and CO in the two waveband laser of the present invention
2Mutually noninterfere is basically supplied with in the agent structure of laser gain module and electricity, gas, water route, and therefore, the power output of two waveband laser of the present invention is adjustable respectively.
To sum up; Not only easy to operate, the working stability of two waveband laser of the present invention, light path are regulated simple, can the long-time continuous bright dipping; And possesses good serviceability, the compound bright dipping of infrared in can effectively realizing (3 microns～5 microns) and far infrared (8 microns～12 microns) two waveband laser.
Description of drawings
Fig. 1 is the schematic diagram of existing two waveband laser combination bright dipping.
Fig. 2 be in the embodiment of the invention in, the stereogram of far infrared two waveband laser.
Fig. 3 be in the embodiment of the invention in, the structural representation of far infrared two waveband laser.
Fig. 4 is that laser gain generator among Fig. 3 is in the cross-sectional view at A-A place.
Fig. 5 is the CO among Fig. 3
2The laser gain generator is in the cross-sectional view at B-B place.
Fig. 6 is that DF laser gain generator among Fig. 3 is in the cross-sectional view at C-C place.
Fig. 7 is the partial enlarged drawing (mainly be the structural principle of realizing two kinds of laser gain medium peak couplings in order to illustrate among above Fig. 4～Fig. 7, most of conventional pipeline is laid in these sketch mapes and does not draw) at D place among Fig. 4.
Fig. 8 is CO in the embodiment of the invention
2, DF upper laser level population is with CO
2/ D
2The distribution map of spray orifice distance.
Marginal data
1, DF laser tube; 2, CO
2Laser tube; 3, DF laser gain generator; 31, D
2Gas injection hole; 32, DF gain medium district; 33, upper component; 34, lower member; 35, D
2Gas injection tube; 4, CO
2The laser gain generator; 41, CO
2Gas injection hole; 42, CO
2The gain medium district; 43, top assembly; 44, lower component; 45, CO
2Gas injection tube; 5, two waveband total reflective mirror; 6, two waveband outgoing mirror; 7, DF laser heat-exchange tube; 8, CO
2The laser heat-exchange tube; 9, vacuum system; 10, air curtain; 11, N
2Flow in pipes; 12, two waveband output window.
Embodiment
Below in conjunction with Figure of description and specific embodiment the present invention is further described.
Embodiment:
A kind of as Fig. 2, shown in Figure 3 of the present invention in, far infrared two waveband laser, this two waveband laser comprises CO
2Laser gain module and DF laser gain module, CO
2Laser gain module comprises the CO that is connected successively
2 Laser tube 2, CO
2 Laser gain generator 4 and CO
2Laser heat-exchange tube 8, DF laser gain module then comprise DF laser tube 1, DF laser gain generator 3 and the DF laser heat-exchange tube 7 that is connected successively, CO
2Laser heat-exchange tube 8 all is connected in vacuum system 9 with DF laser heat-exchange tube 7.The structure of aforementioned two kinds of laser tubes is identical, and anode is single nickel pin, and the discharge air ring injects around anode; Negative electrode is the copper ring of plating nickel on surface, and airflow direction is for to flow to negative electrode from anode.
Visible by Fig. 2, Fig. 3, the CO in the present embodiment
2Laser gain module and DF laser gain module are arranged side by side each other, and are parallel to each other, and direction is consistent, wherein, and CO
2 Laser gain generator 4 is interconnected with the inboard that DF laser gain generator 3 abuts mutually and forms a gain medium zone.Clearly, the gain medium zone in the present embodiment comprises and is positioned at CO
2CO in the laser gain generator 4
2Gain medium district 42 and the DF gain medium district 32 that is positioned at DF laser gain generator 3, CO
2Gain medium district 42 and DF gain medium district 32 are arranged side by side, between to form air curtains through air curtain 10 isolated.
Like Fig. 3～shown in Figure 7, in the present embodiment coupling that realizes two kinds of laser gain medium peaks through position translation.Wherein, DF laser gain generator 3 comprises upper component 33 and lower member 34, respectively is provided with a D in upper component 33 and the lower member 34
2 Gas injection tube 35, D
2Respectively be provided with the D that a row is communicated with DF gain medium district 32 on the gas injection tube 35
2Gas injection hole 31 (totally 85 holes) is arranged in the D of upper component 33
2 Gas injection hole 31 and the D that is arranged in lower member 34
2 Gas injection hole 31 interleaved are arranged (referring to Fig. 7).CO
24 in laser gain generator comprises top assembly 43 and lower component 44, respectively is provided with five CO in top assembly 43 and the lower component 44
2 Gas injection tube 45, every CO
2 Gas injection tube 45 is provided with a row and CO
2The CO that gain medium district 42 is communicated with
2Gas injection hole 41 (totally 425 holes) is arranged in the CO of top assembly 43
2 Gas injection hole 41 and the CO that is arranged in lower component 44
2 Gas injection hole 41 interleaved are arranged (referring to Fig. 7).Because D
2 Gas injection tube 35 and D
2The fixed-site of gas injection hole 31 can utilize the flat-concave cavity scanning method to confirm the optimal light shaft position of DF laser earlier, and this optical axis position is DF-CO
2The common light shaft position of two kinds of gain medias is then through opening different rows' CO
245 corresponding CO that connect of gas injection tube
2The gas circuit valve can be regulated CO
2The original position of the mixing of gas and pumping reaction, and then realize CO
2The independent adjusting of laser optical shaft position (adjustable range is 32mm) makes CO
2The gain peak position of gain media and aforementioned common optical axis are complementary.Certainly, after the conditions of work such as change throughput by a relatively large margin, chamber pressure, the gain peak position of two kinds of gain medias also can change to some extent, also can confirm the optimal light shaft position again through above-mentioned steps.
Two outsides of gain medium zone then connect two waveband total reflective mirror 5 and two waveband outgoing mirror 6 respectively through pipeline, and two waveband total reflective mirror 5 has constituted CO in the extraction gain medium zone with two waveband outgoing mirror 6
2The laserresonator of gain medium and DF laser medium (trans-regional like arrow institute among Fig. 3) has comprised DF laser gain generator 3 and CO in the laserresonator
2DF and CO that laser gain generator 4 produces
2Gain media and air curtain 10.As shown in Figure 3; Two waveband total reflective mirror 5 in the present embodiment is for being coated with the concave mirror of metal film; Two waveband outgoing mirror 6 in being coated with, the level crossing of far infrared two waveband transmission film; Laser adopts the intracavity structure; In, far infrared two waveband laser sees through 12 outputs of two waveband output window behind two waveband outgoing mirror 6, window material in infrared (3 microns～5 microns) with far infrared (8 microns～12 microns) two waveband high transmittance (present embodiment is promptly selected the zinc selenide window for use) is arranged all, the laserresonator 11 in the present embodiment is the plano-concave stable cavity optical cavity of other all kinds and version (but also can select for use) of concave mirror-level crossing composition.
An end of DF laser heat-exchange tube 7 is connected with DF laser gain generator 3 in the present embodiment, and the other end is communicated with vacuum system 9; CO in the present embodiment
2One end and the CO of laser heat-exchange tube 8
2 Laser gain generator 4 is connected, and the other end is communicated with vacuum system 9.Vacuum system 9 mainly is made up of vacuum pump and vacuum pipe, and its function is to provide the work of keeping required pressure for the two waveband laser of present embodiment, and takes the waste gas behind the extraction overpower rapidly away.
In the present embodiment, the operation principle of far infrared two waveband laser is:
At first, in the DF of present embodiment laser tube 1, feed fluorine source gas NF
3(the complementary gas that discharges is as diluent with the complementary gas He of discharge; Mainly play effects such as reducing the discharge tube starting voltage, keep discharge, dissociate in promotion fluorine source); Produce the mixed airflow that contains the F atom through HVDC glow discharge then, reaction equation is following:
The discharge of fluorine source is dissociated: NF
3+ He → NF
i+ (3-i) F+He, i≤2;
The mixed airflow that contains the F atom that produces enters into DF laser gain generator 3, and with the fuel gas D that is passed in the DF laser gain generator 3
2Following pumping reaction taking place, generates excitation state DF molecule, in DF laser gain generator 3, injects an amount of secondary diluent (He gas) simultaneously to improve the output performance of DF laser:
Pumping reaction: F+D
2→ DF (υ)+D;
Meanwhile, to the CO of present embodiment
2Feeding discharge excitation gas in the laser tube 2 is N
2With the complementary gas He of discharge, produce excitation state N through HVDC glow discharge
2Molecule, reaction equation is following:
Discharge excitation: N
2+ He → N
2(υ)+He;
The excitation state N that produces
2Molecule enters into CO
2In the laser gain generator 4, and be passed into CO
2Ground-state CO in the laser gain generator 4
2The described resonance of molecule generation following formula passes ability, at CO
2Generate excitation state CO in the laser gain generator 4
2Molecule:
Resonance passes ability: N
2(υ)+CO
2→ N
2+ CO
2(υ).
Because CO
2Molecular weight gas is than D
2(specific heat ratio is than D greatly
2Little), can know CO according to the aerodynamics flow formula
2The gas injection needs bigger circulation area, therefore, and CO
2 Laser gain generator 4 modules have been selected bigger gas injection aperture (present embodiment is specially Φ 0.6mm), than D
2Pore (Φ 0.4mm) is big.Because excitation state DF molecule and ground-state CO
2Also can produce resonance between the molecule and pass ability, so DF laser gain generator 3 and CO
2Use N between the laser gain generator 4
2 Air curtain 10 is isolated, N
2Gas is from like Fig. 5, N shown in Figure 6
2Flow in pipes 11 both sides are injected, and prevent phase mutual interference between two kinds of gain medias.
Excitation state DF molecule that above-mentioned pumping reaction generates and ground state DF, D
2, F, H, N
2, NF
3Bump on particle and to relax towards ground state, excitation state CO
2Molecule and He, N
2, ground-state CO
2Bump on particle and to relax towards ground state.The rate equation and the data of pumping, relaxation and correlated response process are not listed at this in detail.According to pumping and relaxation reaction related data, during we can calculate, the last energy level population of two band lasers of far infrared is with the theoretical curve of range distribution, and is as shown in Figure 8.Excitation state CO
2The generation of molecule and relaxation rate are promptly compared CO with the DF laser medium all than about slowly one to two one magnitude of the respective value of DF molecule
2After laser medium gain peak position was more leaned on, the sharp section length of penetrating was longer.Theoretical curve meets basically among experimental measurement result and Fig. 8, the about 10mm of DF laser gain section length, and its peak value is positioned at D
2Descend rapidly CO near downstream, the position 2mm～3mm that injects, peak value
2The laser gain section length descends slowly near the peak value greater than 30mm.
After above-mentioned reaction was carried out, two waveband total reflective mirror 5 just began to extract excitation state DF molecule and CO with the laserresonator that two waveband outgoing mirror 6 is formed
2The gain that molecule forms; Two groups of gain medias are by same group of laserresonator output laser, according to observed result, two waveband laser output of the present invention in optical axises infrared, two kinds of laser of far infrared overlap fully, and the facular model coupling is good.
Claims (5)
1. in one kind, far infrared two waveband laser, said in, far infrared two waveband laser comprises CO
2Laser gain module and DF laser gain module, said CO
2Laser gain module comprises the CO that is connected successively
2Laser tube, CO
2Laser gain generator and CO
2Laser heat-exchange tube, said DF laser gain module comprise DF laser tube, DF laser gain generator and the DF laser heat-exchange tube that is connected successively, said CO
2Laser heat-exchange tube and DF laser heat-exchange tube all are connected in vacuum system, it is characterized in that: said CO
2Laser gain module and DF laser gain module are arranged side by side each other, said CO
2The laser gain generator is interconnected with the inboard that DF laser gain generator abuts mutually and forms the gain medium zone of said two waveband laser; The both sides of said gain medium zone connect two waveband total reflective mirror and two waveband outgoing mirror respectively through pipeline, are formed with one between said two waveband total reflective mirror and the two waveband outgoing mirror and extract CO in the said gain medium zone
2The laserresonator of gain medium and DF laser medium;
Said gain medium zone comprises and is positioned at said CO
2CO in the laser gain generator
2Gain medium district and the DF gain medium district that is positioned at said DF laser gain generator, said CO
2Gain medium district and DF gain medium district are arranged side by side, between form through air curtain isolated;
The fluorine source gas that feeds in the said DF laser tube is NF
3, the complementary gas of discharge that feeds in the said DF laser tube is He, the fuel gas that feeds in the said DF laser gain generator is D
2, the diluent gas that feeds in the said DF laser gain generator is He;
Said CO
2The discharge excitation gas that feeds in the laser tube is N
2, said CO
2The complementary gas of the discharge that feeds in the laser tube is He; Said CO
2It can gas be CO that the resonance that feeds in the laser gain generator passes
2
Said DF laser gain generator comprises upper component and lower member, respectively is provided with a D in said upper component and the lower member
2Gas injection tube, said D
2Respectively be provided with the D that a row is communicated with said gain medium zone on the gas injection tube
2Gas injection hole is arranged in the D of upper component
2Gas injection hole and the D that is arranged in lower member
2The gas injection hole interleaved is arranged;
Said CO
2The laser gain generator comprises top assembly and lower component, respectively is provided with at least five CO in said top assembly and the lower component
2Gas injection tube, every CO
2Gas injection tube is provided with the CO that a row is communicated with said gain medium zone
2Gas injection hole is arranged in the CO of top assembly
2Gas injection hole and the CO that is arranged in lower component
2The gas injection hole interleaved is arranged.
2. in according to claim 1, far infrared two waveband laser, it is characterized in that: said air curtain is the nitrogen air curtain.
3. in according to claim 1 and 2, far infrared two waveband laser, it is characterized in that: said CO
2The laser gain generator comprises top assembly and lower component, respectively is provided with at least five CO in said top assembly and the lower component
2Gas injection tube, every CO
2Gas injection tube is provided with the CO that a row is communicated with said gain medium zone
2Gas injection hole is arranged in the CO of top assembly
2Gas injection hole and the CO that is arranged in lower component
2The gas injection hole interleaved is arranged.
4. in according to claim 1 and 2, far infrared two waveband laser; It is characterized in that: said two waveband total reflective mirror is the concave mirror that is coated with metal film; Said two waveband outgoing mirror is in being coated with, the level crossing of far infrared two waveband transmission film, and said laserresonator is the plano-concave stable cavity that said concave mirror and said level crossing are formed.
5. in according to claim 1 and 2, far infrared two waveband laser; It is characterized in that: said two waveband total reflective mirror is the concave mirror that is coated with metal film; Said two waveband outgoing mirror is in being coated with, the level crossing of far infrared two waveband transmission film, and said laserresonator is the plano-concave stable cavity that said concave mirror and said level crossing are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100951198A CN102208749B (en) | 2011-04-15 | 2011-04-15 | Intermediate and far infrared two-waveband laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100951198A CN102208749B (en) | 2011-04-15 | 2011-04-15 | Intermediate and far infrared two-waveband laser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102208749A CN102208749A (en) | 2011-10-05 |
| CN102208749B true CN102208749B (en) | 2012-06-27 |
Family
ID=44697460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100951198A Active CN102208749B (en) | 2011-04-15 | 2011-04-15 | Intermediate and far infrared two-waveband laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102208749B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856783B (en) * | 2012-09-14 | 2014-04-02 | 北京工业大学 | Intermediate/far infrared super-continuum spectrum fiber laser |
| CN103337779B (en) * | 2013-07-05 | 2016-04-06 | 中国人民解放军国防科学技术大学 | The middle infrared-gas laser of pumped fiber |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1302102A (en) * | 1999-12-28 | 2001-07-04 | 中国科学院电子学研究所 | High power tunable CO2 laser |
| US6331993B1 (en) * | 1998-01-28 | 2001-12-18 | David C. Brown | Diode-pumped gas lasers |
| CN1589513A (en) * | 2001-09-20 | 2005-03-02 | 阿拉巴玛州立大学伯明翰研究基金会 | Mid-ir microchip laser: ZnS:Cr2+ laser with saturable absorber material |
| CN101378172A (en) * | 2007-08-30 | 2009-03-04 | 中国科学院福建物质结构研究所 | 760 nanometer waveband solid-state laser |
-
2011
- 2011-04-15 CN CN2011100951198A patent/CN102208749B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6331993B1 (en) * | 1998-01-28 | 2001-12-18 | David C. Brown | Diode-pumped gas lasers |
| CN1302102A (en) * | 1999-12-28 | 2001-07-04 | 中国科学院电子学研究所 | High power tunable CO2 laser |
| CN1589513A (en) * | 2001-09-20 | 2005-03-02 | 阿拉巴玛州立大学伯明翰研究基金会 | Mid-ir microchip laser: ZnS:Cr2+ laser with saturable absorber material |
| CN101378172A (en) * | 2007-08-30 | 2009-03-04 | 中国科学院福建物质结构研究所 | 760 nanometer waveband solid-state laser |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102208749A (en) | 2011-10-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Lando et al. | A solar-pumped Nd: YAG laser in the high collection efficiency regime | |
| US10167812B2 (en) | Radiation thermal absorber based on characteristic absorption spectrum, and stirling engine and operation method thereof | |
| WO2008099226A8 (en) | Solar heat enginge system | |
| Almeida et al. | Improvement in solar-pumped Nd: YAG laser beam brightness | |
| KR20150086368A (en) | Method and apparatus for providing adaptive swirl injection and ignition | |
| CN102208749B (en) | Intermediate and far infrared two-waveband laser | |
| CN103827475A (en) | Fuel production apparatus | |
| CN205790924U (en) | A kind of pyramid formula many strokes pumping video disc laser instrument | |
| CN101854030A (en) | Laser light source device of high-power semiconductor | |
| CN101859025A (en) | High-power semiconductor laser optical output module capable of being reused | |
| CN105225715A (en) | A kind of trunk type nuclear energy power generation device based on Stirling cycle | |
| RU2150778C1 (en) | Improved magnetohydrodynamic generator and hybrid-propellant engine | |
| CN203339468U (en) | Multipath lamp pump laser coherent synthesis device based on pyramid prism | |
| KR101021589B1 (en) | Power-generating apparatus using solar energy | |
| US20100000225A1 (en) | Combined Heat, Ice, Power, and Steam System | |
| JP2009197788A (en) | Various energy conservation cycle combined engine | |
| CN101286616A (en) | 2 mu m complete solid state pulse ring laser | |
| US10352271B1 (en) | Laser powered, air breathing, open-cycle heat engines | |
| CN102230456B (en) | Atmosphere breathing type laser engine device | |
| US20160215695A1 (en) | Hybrid plant with a combined solar-gas cycle and operating method | |
| US8937983B2 (en) | Device for transformation of concentrated solar energy | |
| US10739038B2 (en) | Solar heat collecting device | |
| US8997734B2 (en) | Solar concentrating heat receiver and system thereof | |
| JP2005337193A (en) | Electric power transmission system by microwave using starling engine using solar light and heat | |
| CN112448253A (en) | Solid laser gain module cooled by supersonic low-temperature gas and 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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |