CN109405636A - A kind of compacting interference method and apparatus of high-energy laser - Google Patents
A kind of compacting interference method and apparatus of high-energy laser Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
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Abstract
本发明实施例提供一种高能激光器的压制干扰方法和装置，该方法包括：获取并追踪高能激光器的位置，并向所述高能激光器发送频率在高能激光器工作物质的发射谱内的干扰激光，以减少所述高能激光器中工作物质的反转粒子数，降低所述高能激光器的输出功率。通过激光源照射高能激光器，激光进入到高能激光器工作物质内，消耗工作物质内累计的上能级粒子数，降低反转粒子数△n，使高能激光器工作时的增益大大降低，从而降低高能激光器的输出功率，达到有效、快速、最低成本的压制和干扰高能激光器的目的。
Embodiments of the present invention provide a method and device for suppressing interference of a high-energy laser. The method includes: acquiring and tracking the position of the high-energy laser, and sending an interference laser with a frequency within the emission spectrum of the working substance of the high-energy laser to the high-energy laser, so as to obtain and track the position of the high-energy laser. The number of inverted particles of the working substance in the high-energy laser is reduced, and the output power of the high-energy laser is reduced. The high-energy laser is irradiated by the laser source, and the laser enters the working material of the high-energy laser, consumes the accumulated number of upper-level particles in the working material, reduces the number of inverted particles Δn, and greatly reduces the gain of the high-energy laser when it is working, thereby reducing the high-energy laser. The output power can achieve the purpose of suppressing and interfering with high-energy lasers effectively, quickly and at the lowest cost.
Description
Technical field
The present embodiments relate to high-energy laser technical fields, more particularly, to a kind of compacting of high-energy laser
Interference method and device.
Background technique
Laser never stopped developing steps so far from coming out, with advances in technology, the output work of laser
Rate is improving always, has had reached the rank of 10 myriawatts.After laser invention, due to its good directionality, power height etc. is excellent
Gesture, military use are just it has been found that by development in more than 40 years rapidly, and high energy laser weapon has been achieved with gratifying progress,
It all makes progress in terms of Output optical power, beam quality and miniaturization.
Laser weapon is a kind of directed energy weapon, directly injures target using the laser beam of powerful directional transmissions or is allowed to
Failure.It is to destroy using the huge energy that high brightness intense laser beam carries or kill enemy's aircraft, guided missile, satellite and personnel etc.
The high-tech new concept weapon of target.Light laser weapon has the advantages that other weapons are incomparable, and light laser weapon has speed
Degree is fast, precision is high, intercept distance is remote, transfer fire is rapid, not by external electromagnetic wave interference, persistently fighting capacity is strong the advantages that.
All in research how by the weaponization of high-energy laser, it is low, slow, small that fraction of laser light already functions as destruction for many countries
Type target, such as directly ignite guided missile, injure car engine, destroy unmanned plane etc., high-power laser light source is used as weaponry,
Unique effect can be played in photoelectronic warfare, air defense and strategic defensive.For this purpose, effective compacting, interference high energy laser sources have
Important meaning, the method used in the prior art are transmitting smoke shells, and the protection method for reducing laser threat is scattered by smog,
The method is not moved more, inflexible, and inconvenient lasting use.
Summary of the invention
The embodiment of the present invention provides a kind of a kind of high energy for overcoming the above problem or at least being partially solved the above problem
Method and apparatus are interfered in the compacting of laser.
In a first aspect, the embodiment of the present invention provides a kind of compacting interference method of high-energy laser, comprising:
The position of high-energy laser is obtained and tracked, and sends frequency to the high-energy laser and works in high-energy laser
Interference laser in the emission spectra of substance, to reduce the inverted population of operation material in the high-energy laser, described in reduction
The output power of high-energy laser.
Preferably, and to the high-energy laser send interference laser, specifically include:
After the real time position for obtaining the high-energy laser, according to the real time position of high-energy laser, continue to the height
It can laser transmission interference laser.
Preferably, after obtaining and tracking the position of high-energy laser, further includes:
Detect frequency, the wavelength of the high-energy laser output laser.
Preferably, after detecting the frequency that the high-energy laser exports laser, further includes:
Based on the frequency of high-energy laser output laser, high-energy laser operation material is obtained, and select frequency in high energy
Laser in the emission spectra of laser works substance is as interference laser.
Second aspect, the embodiment of the present invention provide a kind of compacting countermeasure set of high-energy laser, including follow-up mechanism and
Jamming light source；
The follow-up mechanism, for obtaining and tracking the position of high-energy laser；
The jamming light source, for sending frequency in the emission spectra of high-energy laser operation material to the high-energy laser
Interior interference laser reduces the high-energy laser to reduce the inverted population of operation material in the high-energy laser
Output power.
Preferably, the jamming light source includes detection sighting device, the detection sighting device is described for obtaining
After the real time position of high-energy laser, according to the real time position of high-energy laser, the interference laser of jamming light source is persistently sent
To the high-energy laser.
Preferably, further including laser analysis device, the laser analysis device is for detecting the high-energy laser
The frequency for exporting laser obtains high-energy laser operation material, and select frequency based on the frequency of high-energy laser output laser
Laser in the emission spectra of high-energy laser operation material is as interference laser.
The embodiment of the present invention proposes a kind of compacting interference method and apparatus of high-energy laser, by reducing Laser emission
Energy level population can reduce inverted population on operation material in laser seed source or laser amplifier in device, to cut significantly
The output energy of weak laser transmitter, laser source irradiate high-energy laser, and laser enters in high-energy laser operation material, disappears
The upper energy level population added up in operation material is consumed, reduces inverted population △ n, gain when high-energy laser being made to work is significantly
It reduces, to reduce the output power of high-energy laser, reaches effective, quick, least cost compacting and interference superlaser
The purpose of device more actively flexibly, and may be used on lasting mobile platform, overcomes the defect of traditional approach.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is to interfere method schematic diagram according to the compacting of the high-energy laser of the embodiment of the present invention；
Fig. 2 is the laser stimulated radiation schematic illustration according to the embodiment of the present invention；
Fig. 3 is to interfere schematic device according to the compacting of the high-energy laser of the embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Usually, power is more than that 1 kilowatt of laser is just referred to as military high-energy laser, and the current overwhelming majority is
Development, the Tactics-level military laser power tested are all between tens to 100 kilowatts, and strategic grade application power is likely to be breached
Thousands of kilowatts.In fact, 1 watt of underpower of laser designator can cause human eye within 1 second permanently to hurt
Evil, and laser of the average output power between 0.3~1 kilowatt is then widely used in industrial cutting.In contrast, above several
The power of laser will be well below the military high-energy laser of currently acceptance test in a example, this is also from another side
Face illustrates that Military Application grade superlaser has huge potential killing and damage capability.The general measurement of another kind of superlaser
Whether standard depends on the energy of its Sing plus more than 30 kJ (kilojoule)s.In fact, intensity is more than every square centimeter 0.2~0.4
Joule laser pulse only needed for 10 nanoseconds will cause to burn to human skin, and for the aircraft of not armor facing and
The laser irradiation of guided missile, 10 kJ (kilojoule) every square centimeter can damage its structure in 0.2 second.
The speed advantage of superlaser has also surmounted most traditional weapon systems and ammunition.The high energy run with the light velocity
Laser almost only needs " zero flight time " just to damage to target.This almost synchronous fight capability for destroying target is practical
On deprived enemy's all reaction time.Therefore, superlaser at a fixed time can be than traditional weapon system in the period
Attack more multiple target.
Due to influence of the stability vulnerable to vegetation and environmental change of single Remote Sensing Model index, the present invention is respectively implemented
Example provides a kind of compacting interference method and apparatus of high-energy laser, passes through to effectively suppress, interfere high energy laser sources
Reduce in laser emitter that energy level population can reduce reversion particle on operation material in laser seed source or laser amplifier
Number, to weaken the output energy of laser emitter significantly.Expansion explanation and introduction will be carried out by multiple embodiments below.
Fig. 1 is a kind of compacting interference method of high-energy laser provided in an embodiment of the present invention, comprising:
S1, acquisition and the position for tracking high-energy laser；
S2, Xiang Suoshu high-energy laser send interference laser of the frequency in the emission spectra of high-energy laser operation material,
To reduce the inverted population of operation material in the high-energy laser, the output power of the high-energy laser is reduced.
In the present embodiment, laser works are based on stimulated radiation principle, and the atom on high level E2 is in frequency v=
(E2-E1) under/h radiation field incentive action, or in the case where the photon that frequency is v=(E2-E1)/h induces, to low-lying level E1 transition
And one is given off with excitation radiation field photon or induces state (including frequency, the direction of motion, polarization direction, the phase of photon
Deng) identical photon, as shown in Figure 2.
Under general thermal equilibrium condition, high level population ratio low-lying level population is few, cannot achieve light amplification.So taking
The methods of such as illumination, electric discharge, constantly to operation material input energy, excite the incandescnet particle for being in lower energy level from extraneous
Gone on to upper energy level, can make energy level E2 population density be more than lower energy level E1 population density, this state is referred to as
Population inversion.When the photon that frequency is v is by luminescent substance, light intensity will be amplified.
Therefore, in the present embodiment, according to the working principle of the above laser, the energy of laser is exported by laser works
Gain coefficient in substance determines that gain coefficient and the inverted population △ n that upper and lower energy level transition is formed are proportional, pass through
Reduce in laser emitter that energy level population can reduce reversion particle on operation material in laser seed source or laser amplifier
Number, to weaken the output energy of laser emitter significantly, using beam of laser source irradiation superlaser transmitting in the present embodiment
Device, laser enter in superlaser transmitter operation material, consume the upper energy level population added up in operation material, reduce anti-
Turn population △ n, gain when superlaser transmitter being made to work substantially reduces, to reduce the output work of high-energy laser
Rate achievees the purpose that effective, quick, least cost compacting and interference high-energy laser.
On the basis of the above embodiments, and to the high-energy laser interference laser is sent, specifically included:
After the real time position for obtaining the high-energy laser, according to the real time position of high-energy laser, continue to the height
It can laser transmission interference laser.
In the present embodiment, in order to which interference laser is accurately sent to high-energy laser, compacting and interference high energy are realized
Laser, it is also necessary to be accurately positioned the position of high-energy laser, in the present embodiment, can according to laser linear transmission characteristic,
Real-time tracing is carried out to the laser that high-energy laser issues, and then obtains the direction of high-energy laser, then reversely emit and swashs
After light, or the orientation of acquisition high-energy laser, the high-energy rig at the orientation is obtained by satellite, and then lock superlaser
The specific location of device.
On the basis of the above embodiments, behind the position for obtaining and tracking high-energy laser, further includes:
Detect frequency, the wavelength of the high-energy laser output laser.
In the present embodiment, high-energy laser is measured by spectrometer and exports laser frequency, and it is defeated to calculate high-energy laser
The wavelength of laser out.
On the basis of the above embodiments, after the frequency for detecting the high-energy laser output laser, further includes:
Frequency based on high-energy laser output laser, thus it is speculated that go out the operation material of high-energy laser, obtain superlaser
After device operation material, select laser of the frequency in the emission spectra of high-energy laser operation material as interference laser.
The embodiment of the invention also provides a kind of compacting countermeasure sets of high-energy laser, based on above-mentioned high-energy laser
Drawing method, including follow-up mechanism 2 and jamming light source 1, in which:
The follow-up mechanism 2 obtains and tracks the position of high-energy laser；
The jamming light source 1 sends frequency in the emission spectra of high-energy laser operation material to the high-energy laser
Laser is interfered to reduce the output of the high-energy laser to reduce the inverted population of operation material in the high-energy laser
Power.
As shown in figure 3, follow-up mechanism 2 detects when high-power laser beam is radiated in target 4 by high-energy laser 3
After the laser that high-energy laser 3 emits, jamming light source 1 is directed at high-energy laser 3, laser beam portion is coupled into superlaser
The damage for causing 3 part of high-energy laser, zero device in 3 operation material of device or the reversion grain by consuming its internal work substance
Son makes high-energy laser 3 not go out light or output power decline, to achieve the effect that compacting and interference high-energy laser 3 act on.
It further include laser analysis device, the laser analysis device is used to detect the frequency of the high-energy laser output laser
Rate obtains high-energy laser operation material, and select frequency in high-energy laser based on the frequency of high-energy laser output laser
Laser in the emission spectra of operation material is as interference laser.
On the basis of the various embodiments described above, the jamming light source includes detection sighting device, the detection sighting device
After real time position for obtaining the high-energy laser, according to the real time position of high-energy laser, by the interference of jamming light source
Laser is persistently sent to the high-energy laser.
In the present embodiment, it in order to verify the interference effect of method or apparatus in various embodiments of the present invention, is also surveyed
Test card, using the air-cooled semiconductor pumped solid state laser voluntarily developed as disturbed laser, laser output
Pulsewidth is 9.8ns, maximum output energy 350mJ, is disturbed the Pump duration of laser as 200 μ s, is in electric current in experiment
When 60A, the laser pulse of exportable 9.8ns, 100mJ.
Using air-cooled semiconductor pumped solid state laser as interference source, interference source output pulse width is 10ns, maximum
Output energy is 100mJ, by adjusting pump supply source electric current, two groups of 30mJ, 10ns and 60mJ, 10ns parameters is taken, by interference source
Light-emitting window and disturbed laser light-emitting window aligned in position, it is ensured that disturbing pulse can normal incidence into disturbed laser.
The Pump duration of disturbed laser is 200 μ s, and disturbing pulse was injected in the disturbed laser pumping stage,
After disturbing pulse takes away the energy stored by disturbed laser, disturbed laser will continue to carry out pumping accumulation.
The output characteristics of disturbed laser is surveyed when to different injection length nodes, injection different-energy interference light
Amount, it can be found that unstable phenomenon is obvious:
(1) it is 30mJ in interference light energy, when injection length is 100 μ s, is disturbed the exportable energy loss of laser
10%, pulse stretcher is to 1.1 times.Interfere optical pulse energy bigger, extraction energy is more in disturbed laser, causes to be done
Disturbing laser output energy reduces；
(2) it is 30mJ in interference light energy, when injection length is 180 μ s, is disturbed the exportable energy loss of laser
60%, pulse stretcher is to 22 times.Interfere light injection length more rearward, that is, leaves disturbed laser for and re-start pumping accumulation
Time is shorter, and unstable phenomenon is more obvious.
In conclusion the embodiment of the present invention proposes a kind of compacting interference method and apparatus of high-energy laser, pass through drop
Energy level population can reduce inverted population on operation material in laser seed source or laser amplifier in low high-energy laser,
To weaken the output energy of high-energy laser significantly, laser source irradiates high-energy laser, and laser enters high-energy laser work
Make in substance, consume the upper energy level population added up in operation material, reduces inverted population △ n, high-energy laser is made to work
When gain substantially reduce, to reduce the output power of high-energy laser, reach effective, quick, least cost compacting and
It interferes the purpose of high-energy laser more actively flexibly, and to may be used on lasting mobile platform, overcomes lacking for traditional approach
It falls into.
The apparatus embodiments described above are merely exemplary, wherein described, unit can as illustrated by the separation member
It is physically separated with being or may not be, component shown as a unit may or may not be physics list
Member, it can it is in one place, or may be distributed over multiple network units.It can be selected according to the actual needs
In some or all of the modules achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying creativeness
Labour in the case where, it can understand and implement.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (7)
1. a kind of compacting interference method of high-energy laser characterized by comprising
The position of high-energy laser is obtained and tracked, and sends frequency in high-energy laser operation material to the high-energy laser
Emission spectra in interference laser reduce the high energy to reduce the inverted population of operation material in the high-energy laser
The output power of laser.
2. the compacting interference method of high-energy laser according to claim 1, which is characterized in that and to the superlaser
Device sends interference laser, specifically includes:
After the real time position for obtaining the high-energy laser, according to the real time position of high-energy laser, continue to swash to the high energy
Light device sends interference laser.
3. the compacting interference method of high-energy laser according to claim 1, which is characterized in that obtain and track high energy and swash
Behind the position of light device, further includes:
Detect frequency, the wavelength of the high-energy laser output laser.
4. the compacting interference method of high-energy laser according to claim 3, which is characterized in that detect the superlaser
After device exports the frequency of laser, further includes:
Based on the frequency of high-energy laser output laser, high-energy laser operation material is obtained, and select frequency in superlaser
Laser in the emission spectra of device operation material is as interference laser.
5. a kind of compacting countermeasure set of high-energy laser, which is characterized in that including follow-up mechanism and jamming light source；
The follow-up mechanism, for obtaining and tracking the position of high-energy laser；
The jamming light source, for sending frequency in the emission spectra of high-energy laser operation material to the high-energy laser
Laser is interfered to reduce the output of the high-energy laser to reduce the inverted population of operation material in the high-energy laser
Power.
6. the compacting countermeasure set of high-energy laser according to claim 5, which is characterized in that the jamming light source includes
Sighting device is detected, after the detection sighting device is used to obtain the real time position of the high-energy laser, according to superlaser
The interference laser of jamming light source is persistently sent to the high-energy laser by the real time position of device.
7. the compacting countermeasure set of high-energy laser according to claim 6, which is characterized in that further include laser analysis dress
It sets, the laser analysis device is used to detect the frequency of the high-energy laser output laser, is swashed based on high-energy laser output
The frequency of light obtains high-energy laser operation material, and selects frequency swashing in the emission spectra of high-energy laser operation material
Light is as interference laser.
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| CN102748996A (en) * | 2012-07-22 | 2012-10-24 | 吴超 | Land-based array type defense system for high-energy laser weapons |
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| Title |
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