CN107085297B - A kind of light path design method of High power multi-pass amplification laser system - Google Patents
A kind of light path design method of High power multi-pass amplification laser system Download PDFInfo
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Abstract
The present invention relates to a kind of light path design methods of High power multi-pass amplification laser system, belong to laser system technical field, the trend and resonant reflec-tors posture of each journey light beam are characterized with the point on spatial frequency spectrum, establish each Cheng Guanglu frequency spectrum point and resonant reflec-tors frequency spectrum point, optical path frequency spectrum point based on adjacent light path is relative to resonant reflec-tors frequency spectrum point symmetry, construct the correlation of each Cheng Guanglu frequency spectrum point and resonant reflec-tors frequency spectrum point, the position of each frequency spectrum point is parsed in two-dimensional surface, determine small pore size distribution position in spatial filter, each journey light beam trend and resonant reflec-tors posture, complete the light path design of multi-way amplification laser system, angular spectrum SYMMETRY THEORY is applied to during beam propagation by the present invention, simplify design process, entire design method is simple and easy, light path design especially suitable for High power multi-pass amplification laser system, the scope of application Extensively, the light path design suitable for various configurations.
Description
Technical field
The invention belongs to laser system technical fields, relate in particular to a kind of light of High power multi-pass amplification laser system
Road design method.
Background technique
Inertial confinement fusion is a kind of fusion method for realizing " constraint " by the inertia of particle itself, is a kind of by substance
It compresses and is heated to high-temperature high-density state to realize the science and technology of controllable thermonuclear fusion, the state of matter generated belongs to height
The scope of energy density physical study, it usually needs build large-scale driver to realize that energy loads, as device of high power laser,
High energy particle bundle device, Z pinch device etc..
Currently, Laser Driven mode is the most mature in these Drive technologies, can be provided for inertial confinement fusion
The driving energy of " igniting " magnitude.Therefore, world's major power has carried out different degrees of laser fusion research, and builds
Serial large-scale high power short pulse laser, such as national igniter (the National Ignition in the U.S.
Facility), French megajoule laser aid (Laser Megajoule) and the God Light series of laser devices of China etc..This
A little devices have been all made of the laser technology scheme of combination bore, multi-way amplification (quadruple pass), i.e., multiple laser are arranged in a group binding
Structure (such as 4 × 2 arrays), and make pulse multipass amplifier to extract energy, to improve the extraction efficiency of system, reduce whole
Cost.
With going deep into for research, the mankind have been achieved with the α heating particulates of fusion fuel, and Step wise approximation fusion site at present
Fire, and be expected to realizing clean fusion energy resource in the future.On the road strided forward to clean energy resource, the construction of laser driver at
This becomes one of key restriction factors, and in order to reduce apparatus cost, people will be put using more numbers of passes and increasingly complex multi-way
Big laser system design.Optical path is one of the key problem of multi-way amplification laser system design, and design, pulse note can be flowed by determining
Enter the realizability being isolated between output and grade, conventional light path design is based on reflection law and the law of refraction, carries out in spatial domain.By
Higher more with optimization dimension in the multi-way amplification laser system complexity for the device that faces the future, space optical path design method is difficult
Degree is big, is limiting the design space of multi-way amplification laser system to a certain degree.
Summary of the invention
For various deficiencies of the prior art, to solve the above-mentioned problems, inventor can be with according to the airspace of beam propagation
Corresponding with the time domain of pulse transmission, in pulse transmission process, the problem of many time domains can not be analyzed, which all passes through, transforms to frequency
Domain carries out, during angular spectrum SYMMETRY THEORY is applied to beam propagation by inventor, frequently by space optical path design transformation to space
Domain carries out, and according to the characteristics of optical path of multi-way amplification laser system, the high power that arbitrary configuration is symmetrically realized using angular spectrum is more
The light path design of journey amplification laser system.
To achieve the above object, the invention provides the following technical scheme:
A kind of light path design method of High power multi-pass amplification laser system, comprising the following steps:
S1: the trend and resonant reflec-tors posture of each journey light beam are characterized with the point on spatial frequency spectrum, establishes each Cheng Guanglu frequency spectrum
Point and resonant reflec-tors frequency spectrum point；
S2: the optical path frequency spectrum point based on adjacent light path constructs each Cheng Guanglu frequency spectrum relative to resonant reflec-tors frequency spectrum point symmetry
The correlation of point and resonant reflec-tors frequency spectrum point；
S3: the position of each frequency spectrum point is parsed in two-dimensional surface；
S4: small pore size distribution position in spatial filter, each journey light beam trend and resonant reflec-tors posture are determined, multi-way is completed and puts
The light path design of big laser system.
Further, the laser system include the first resonant reflec-tors, the second resonant reflec-tors, spatial filter, amplifier, etc.
Gas ions electrooptical switching and polarizing film, first resonant reflec-tors, the second resonant reflec-tors are located at the both ends of system, the sky
Between filter be made of 2 lens and array of orifices, low pass spatial filtering is carried out to light beam, the amplifier is located at space filtering
The side of device, the plasma electro-optical switch and polarizing film are located at that spatial filter is ipsilateral, and the polarizing film is located at plasma
Between body electrooptical switching and the second resonant reflec-tors.
It further, further include verifying whether the laser system meets engineer application, specific authentication before step S1
Method are as follows:
The amplification number of passes of the laser system is N, and array of orifices spacing is a, and the focal length of 2 lens is respectively F1And F2IfAndThen the laser system meets engineer application, conversely, the laser system is unsatisfactory for
Engineer application not can be carried out light path design.
Further, in the step S1, the method for establishing each Cheng Guanglu frequency spectrum point and resonant reflec-tors frequency spectrum point are as follows:
Array of orifices present position is set as spatial frequency face, each journey light beam successively focuses on spatial frequency face and forms each journey
Optical path frequency spectrum point sets a Cheng Guanglu frequency spectrum point as (x1, y1), 2 Cheng Guanglu frequency spectrum points be (x2, y2), N journey optical path frequency spectrum point be
(xN, yN), the trend of each Cheng Guanglu frequency spectrum point characterization light beam characterizes the method for each resonant reflec-tors with the frequency spectrum of resonant reflec-tors point
Line is directed toward, and sets the frequency spectrum point of the first resonant reflec-tors as (xc1, yc1), the frequency spectrum point of the second resonant reflec-tors is (xc2, yc2)。
Further, in the step S2, the correlation of each Cheng Guanglu frequency spectrum point and resonant reflec-tors frequency spectrum point are as follows:
Wherein,
Wherein,The integer quotient of Q (N/2) expression N/2.
Further, it in the step S3, according to the light path design target of the laser system, lists additional frequency spectrum point and closes
It is equation, and combines the correlation of each Cheng Guanglu frequency spectrum point and resonant reflec-tors frequency spectrum point, each frequency is parsed in two-dimensional surface
Compose the position of point.
Further, in the step S4, each Cheng Guanglu frequency spectrum point is small pore size distribution position in spatial filter.
Further, in the step S4, the determination method of each journey light beam trend are as follows:
N=(1 → N), wherein θn(x) indicate that n journey beam optical axis is arrived along the first resonant reflec-tors
The angle of spatial filter direction and lens axis in x-axis direction, θn(y) indicate that n journey beam optical axis is arrived along the first resonant reflec-tors
The angle of spatial filter direction and lens axis in y-axis direction.
Further, in the step S4, resonant reflec-tors posture includes the first resonant reflec-tors posture and the second resonant reflec-tors appearance
State；
The determination method of the first resonant reflec-tors posture are as follows:
Wherein, θc1It (x) is the normal of the first resonant reflec-tors along the first resonant reflec-tors to sky
Between the angle of filter direction and lens axis in x-axis direction, θc1It (y) is the normal of the first resonant reflec-tors along the first resonant reflec-tors
Angle to spatial filter direction and lens axis in y-axis direction；
The determination method of the second resonant reflec-tors posture are as follows:
Wherein, θc2It (x) is the normal of the second resonant reflec-tors along the second resonant reflec-tors to sky
Between the angle of filter direction and lens axis in x-axis direction, θc2It (y) is the normal of the second resonant reflec-tors along the second resonant reflec-tors
Angle to spatial filter direction and lens axis in y-axis direction.
The beneficial effects of the present invention are:
During angular spectrum SYMMETRY THEORY is applied to beam propagation, the reflection law that light beam is met on resonant reflec-tors is simple
The symmetric relation for turning to spatial frequency point simplifies design process, meanwhile, amplify laser system in two-dimensional space Domain Design multi-way
The optical path of system does not need to carry out beam Propagation process complicated equation solution, and entire design method is simple and easy, particularly suitable
In the light path design of High power multi-pass amplification laser system, in addition, it is applied widely, it is applicable not only to traditional 4 journeys amplification, also
Light path design suitable for 6 increasingly complex journeys, 8 journeys and particular configuration.
Detailed description of the invention
Fig. 1 is flow diagram of the invention；
Fig. 2 is the overall structure of laser system；
Fig. 3 is the schematic diagram of optical path frequency spectrum point and resonant reflec-tors frequency spectrum point in embodiment two；
Fig. 4 is four kinds of Optimum distribution figures of each journey light beam and resonant reflec-tors posture in embodiment two；
Fig. 5 is the schematic diagram of optical path frequency spectrum point and resonant reflec-tors frequency spectrum point in embodiment three；
Fig. 6 is four kinds of Optimum distribution figures of each journey light beam and resonant reflec-tors posture in embodiment three.
In attached drawing: the first resonant reflec-tors of 1-, 2- amplifier, 3- lens, 4- array of orifices, 5- lens, 6- plasma electricity
Photoswitch, 7- polarizing film, 8- amplifier, the second resonant reflec-tors of 9-, 10- light beam.
Specific embodiment
It is right below with reference to attached drawing of the invention in order to make those skilled in the art more fully understand technical solution of the present invention
Technical solution of the present invention carries out clear, complete description, and based on the embodiment in the application, those of ordinary skill in the art exist
Other similar embodiments obtained under the premise of creative work are not made, shall fall within the protection scope of the present application.
In addition, the direction word mentioned in following embodiment, such as "upper" "lower" " left side " " right side " etc. are only the directions with reference to attached drawing, because
This, the direction word used is for illustrative and not limiting the invention.
Embodiment one:
As shown in Fig. 2, the laser system includes 2 resonant reflec-tors, spatial filter, 2 amplifiers, plasma electricity
Photoswitch 6 and polarizing film 7, the resonant reflec-tors include be located at laser system both ends the first resonant reflec-tors 1, the second chamber it is anti-
Penetrate mirror 9, light beam 10 can between 2 resonant reflec-tors multiple reflections, the spatial filter is by 2 lens and 4 groups of array of orifices
At to the progress low pass spatial filtering of light beam 10, the lens include lens 3 and lens 5, and 2 amplifiers are located at sky
Between filter two sides comprising amplifier 2 and amplifier 8, the plasma electro-optical switch 6 and polarizing film 7 are located at space
Filter is ipsilateral, and the polarizing film 7 is located between plasma electro-optical switch 6 and the second resonant reflec-tors 9, the plasma electricity
Photoswitch 6 for controlling 10 polarization state of light beam, use between plasma electro-optical switch 6 and resonant reflec-tors by the polarizing film 7
In export laser.In some other embodiment, the laser system includes 1 amplifier, and the amplifier is located at space filter
The side of wave device.
Now illustrate that the transmission light path of light beam 10, light beam 10 inject near array of orifices 4 by taking 2 amplifiers as an example, passes through
Collimation is directional light after lens 3, the first resonant reflec-tors 1 is transferred to after amplifier 2 once amplification, by the first resonant reflec-tors 1
Reflection is amplified through amplifier 2 two times, is transferred to plasma electro-optical switch 6, plasma electro-optical switch 6 by spatial filter
Add high pressure electric control polarizing film 7, and light beam 10 is made to be transferred to amplifier 8 through polarizing film 7, crosses after amplifier 8 amplifies three times and transmits
To the second resonant reflec-tors 9, is amplified by the reflection of the second resonant reflec-tors 9 through amplifier 8 four times, opened through polarizing film 7, plasma electric light
Pass 6, spatial filter, amplifier 2 are transferred to the first resonant reflec-tors 1 again, until after having carried out required N journey amplification, light beam
10 switch closing when reaching plasma electro-optical switch 6, light beam 10 passes through the reflection output of polarizing film 7.
As shown in Figs. 1-2, the light path design method of laser system is now illustrated by taking 2 amplifiers as an example, comprising the following steps:
S1: verify whether the laser system meets engineer application, specific verification method are as follows:
Angular spectrum SYMMETRY THEORY is the Near covering under paraxial condition, it is necessary to error evaluation is carried out to it, described in setting
The amplification number of passes of laser system is N, and 4 spacing of array of orifices is a, and the focal length of lens 3 and lens 5 is respectively F1And F2, whenAndThe design error of the laser system is less than 0.1 μ rad, and design error is much smaller than sharp
Photosystem angle drift of laser, then the laser system meets engineer application, is suitable for light path design method of the present invention, instead
It, the laser system is unsatisfactory for engineer application, not can be carried out light path design；
S2: characterizing the trend and resonant reflec-tors posture of each journey light beam 10 with the point on spatial frequency spectrum, will be locating for array of orifices 4
Position is set as spatial frequency face, and each journey light beam successively focuses on spatial frequency face, therefore, establishes each Cheng Guanglu Frequency point and light beam
In the one-to-one relationship of spatial frequency face focal position, a Cheng Guanglu frequency spectrum point is set as (x1, y1), 2 Cheng Guanglu frequency spectrum points
For (x2, y2), N journey optical path frequency spectrum point be (xN, yN), the trend of each Cheng Guanglu frequency spectrum point characterization light beam 10 uses resonant reflec-tors
Frequency spectrum point characterize each resonant reflec-tors normal be directed toward, set the frequency spectrum point of the first resonant reflec-tors 1 as (xc1, yc1), the second chamber is anti-
The frequency spectrum point for penetrating mirror 9 is (xc2, yc2)；
S3: the optical path frequency spectrum point based on adjacent light path constructs each Cheng Guanglu frequency spectrum relative to resonant reflec-tors frequency spectrum point symmetry
The correlation of point and resonant reflec-tors frequency spectrum point, specifically:
Wherein,
Wherein,The integer quotient of Q (N/2) expression N/2；
S4: according to the light path design target of the laser system, additional frequency spectrum point relation equation is listed, and combines each journey
The correlation of optical path frequency spectrum point and resonant reflec-tors frequency spectrum point parses the position of each frequency spectrum point in two-dimensional surface；
S5: small pore size distribution position in spatial filter, each journey light beam trend and resonant reflec-tors posture are determined, multi-way is completed and puts
The light path design of big laser system；
S51: each Cheng Guanglu frequency spectrum point is small pore size distribution position in spatial filter；
S52: the determination method of each journey light beam trend are as follows:
N=(1 → N), wherein θn(x) indicate 10 optical axis of n journey light beam along the first resonant reflec-tors 1
Angle to spatial filter direction and lens axis in x-axis direction, θn(y) indicate 10 optical axis of n journey light beam along the first cavity reflection
Mirror 1 arrives spatial filter direction and lens axis in the angle in y-axis direction；
S53: resonant reflec-tors posture includes the first resonant reflec-tors posture and the second resonant reflec-tors posture；
The determination method of the first resonant reflec-tors posture are as follows:
Wherein, θc1(x) it is arrived for the normal of the first resonant reflec-tors 1 along the first resonant reflec-tors 1
The angle of spatial filter direction and lens axis in x-axis direction, θc1(y) anti-along the first chamber for the normal of the first resonant reflec-tors 1
It penetrates mirror 1 and arrives spatial filter direction and lens axis in the angle in y-axis direction；
The determination method of the second resonant reflec-tors posture are as follows:
Wherein, θc2(x) it is arrived for the normal of the second resonant reflec-tors 9 along the second resonant reflec-tors 9
The angle of spatial filter direction and lens axis in x-axis direction, θc2(y) anti-along the second chamber for the normal of the second resonant reflec-tors 9
It penetrates mirror 9 and arrives spatial filter direction and lens axis in the angle in y-axis direction.Similarly, the light path design method is equally applicable
In the laser system of 1 amplifier.
Embodiment two:
The part that the present embodiment is the same as example 1 repeats no more, unlike:
N=4, a=20mm, F1=12000mm, F2=12000mm, design object are the water of three journey light beams and quadruple pass light beam
Flat output angle is identical, and vertical tolerance reaches minimum spacing 20mm, and journey injection light beam is identical as quadruple pass beam orthogonal angle, respectively
The off-axis Tolerance Optimization of journey light beam to minimum.
Firstly, being calculated according to design driverAndMeet work
Journey application requirement can be used the design method and carry out light path design.
Secondly, as shown in figure 3, Pass.1 indicates that a Cheng Guanglu frequency spectrum point, coordinate are (x in spatial frequency face1, y1),
Pass.2 indicates that 2 Cheng Guanglu frequency spectrum points, coordinate are (x2, y2), Pass.3 indicates that 3 Cheng Guanglu frequency spectrum points, coordinate are (x3,
y3), Pass.4 indicates that optical path frequency spectrum point, coordinate are (x4, y4), CM1 indicates that the frequency spectrum point of the first resonant reflec-tors 1, coordinate are
(xc1, yc1), CM2 indicates that the frequency spectrum point of the second resonant reflec-tors 9, coordinate are (xc2, yc2)；
The correlation of each Cheng Guanglu frequency spectrum point and resonant reflec-tors frequency spectrum point is constructed, specifically:
Simplify, obtain:
According to design object, three journey light beams are identical as the horizontal output angle of quadruple pass light beam, and vertical tolerance reaches between minimum
It away from 20mm, obtains: x3-x4=0, | y3-y4|=20；It is identical as quadruple pass beam orthogonal angle according to journey injection light beam, it obtains:
y1-y4=0, by the correlation of above-mentioned additional frequency spectrum point relation equation and each Cheng Guanglu frequency spectrum point and resonant reflec-tors frequency spectrum point
It combines, available:Or
Two pitchs of holes >=a in array of orifices 4, is taken as equal, obtains: | xc1-xc2|=10, use L0It is comprehensive to characterize each journey light beam
Off-axis Frequency point mean-square value, then
Enable xc1=yc1=
0, correspond to is Optimal Distribution off axis, as shown in figure 4, four kinds of optimizations point of available each journey light beam and resonant reflec-tors posture
Cloth:
Finally, the first Optimum distribution is selected to export as design, small pore size distribution position, each journey in spatial filter are determined
Light beam trend and resonant reflec-tors posture, complete the light path design of multi-way amplification laser system.
Wherein, each Cheng Guanglu frequency spectrum point is small pore size distribution position in spatial filter, each journey light beam trend are as follows:First resonant reflec-tors, 1 posture are as follows: θc1(x)=0, θc1(y)=0, the second chamber
9 posture of reflecting mirror are as follows: θc2(x)=- 0.83mrad, θc2(y)=0.83mrad.
Embodiment three:
The present embodiment part identical with embodiment one to two repeats no more, unlike:
N=6, a=20mm, F1=12000mm, F2=12000mm, design object are journey injection light beam and six journey light beams
Vertical angle is identical, the off-axis Tolerance Optimization of synthesis of each journey light beam to minimum on the basis of, the off-axis tolerance of optimum level to minimum.
It calculatesAndMeet engineer application requirement, as shown in figure 5,
Pass.1 indicates that a Cheng Guanglu frequency spectrum point, coordinate are (x1, y1), Pass.2 indicates that 2 Cheng Guanglu frequency spectrum points, coordinate are (x2,
y2), Pass.3 indicates that 3 Cheng Guanglu frequency spectrum points, coordinate are (x3, y3), Pass.4 indicates that optical path frequency spectrum point, coordinate are (x4,
y4), Pass.5 indicates that 5 Cheng Guanglu frequency spectrum points, coordinate are (x5, y5), Pass.6 indicates that 6 Cheng Guanglu frequency spectrum points, coordinate are
(x6, y6), CM1 indicates that the frequency spectrum point of the first resonant reflec-tors 1, coordinate are (xc1, yc1), CM2 indicates the frequency of the second resonant reflec-tors 9
Point is composed, coordinate is (xc2, yc2), it obtains:Light beam and six journey beam orthogonal angle phases are injected according to a journey
Together, it obtains: y1-y6=0, a is greater than according to each pitch of holes, is obtained: (x1-3xc1+2xc2)2≥102, (xc1-xc2)2+(yc1-yc2)2
≥102, it is minimum according to the off-axis tolerance of synthesis, it obtains:
Water
Put down off-axis LhTolerance is minimum, obtains:Enable xc1=yc1
=xc2=0, | yc1-yc2|=10, | x1-3xc1+2xc2|=10, obtain four kinds of optimizations point of each journey light beam and resonant reflec-tors posture
Cloth, as shown in Figure 6:
Finally, the first Optimum distribution is selected to export as design, small pore size distribution position, each journey in spatial filter are determined
Light beam trend and resonant reflec-tors posture, complete the light path design of multi-way amplification laser system.
Wherein, each Cheng Guanglu frequency spectrum point is small pore size distribution position in spatial filter, and each journey light beam moves towards to determine are as follows:First resonant reflec-tors, 1 posture are as follows: θc1(x)=0, θc1(y)=0, second
9 posture of resonant reflec-tors are as follows: θc2(x)=0, θc2(y)=0.83mrad.
The above has been described in detail, described above, is only a preferred embodiment of the present invention, when cannot
It limit the scope of implementation of the present invention, i.e., it is all according to the made equivalent changes and modifications of the application range, it should still belong to covering scope of the present invention
It is interior.
Claims (3)
1. a kind of light path design method of High power multi-pass amplification laser system, which is characterized in that the laser system includes the
One resonant reflec-tors, the second resonant reflec-tors, spatial filter, amplifier, plasma electro-optical switch and polarizing film, the space filter
Wave device is made of 2 lens and array of orifices, carries out low pass spatial filtering to light beam, the light path design method includes following step
It is rapid:
S1: characterizing the trend and resonant reflec-tors posture of each journey light beam with the point on spatial frequency spectrum, establish each Cheng Guanglu frequency spectrum point and
Resonant reflec-tors frequency spectrum point；
Array of orifices present position is set as spatial frequency face, each journey light beam successively focuses on spatial frequency face and forms each Cheng Guanglu
Frequency spectrum point sets a Cheng Guanglu frequency spectrum point as (x1, y1), 2 Cheng Guanglu frequency spectrum points be (x2, y2), N journey optical path frequency spectrum point be (xN,
yN), the trend of each Cheng Guanglu frequency spectrum point characterization light beam is referred to the normal that the frequency spectrum of resonant reflec-tors point characterizes each resonant reflec-tors
To setting the frequency spectrum point of the first resonant reflec-tors as (xc1, yc1), the frequency spectrum point of the second resonant reflec-tors is (xc2, yc2)；
S2: the optical path frequency spectrum point based on adjacent light path relative to resonant reflec-tors frequency spectrum point symmetry, construct each Cheng Guanglu frequency spectrum point and
The correlation of resonant reflec-tors frequency spectrum point；
Wherein,
Wherein,The integer quotient of Q (N/2) expression N/2；
S3: according to the light path design target of the laser system, additional frequency spectrum point relation equation is listed, and combines each Cheng Guanglu
The correlation of frequency spectrum point and resonant reflec-tors frequency spectrum point parses the position of each frequency spectrum point, each Cheng Guang in two-dimensional surface
Road frequency spectrum point is small pore size distribution position in spatial filter；
S4: small pore size distribution position in spatial filter, each journey light beam trend and resonant reflec-tors posture, the resonant reflec-tors appearance are determined
State includes the first resonant reflec-tors posture and the second resonant reflec-tors posture, completes the light path design of multi-way amplification laser system；
Wherein, the determination method of each journey light beam trend are as follows:
Wherein, θn(x) indicate n journey beam optical axis along the first resonant reflec-tors to sky
Between the angle of filter direction and lens axis in x-axis direction, θn(y) indicate n journey beam optical axis along the first resonant reflec-tors to sky
Between filter direction and lens axis y-axis direction angle；
The determination method of the first resonant reflec-tors posture are as follows:
Wherein, θc1(x) it is filtered along the first resonant reflec-tors to space for the normal of the first resonant reflec-tors
The angle of wave device direction and lens axis in x-axis direction, θc1It (y) is the normal of the first resonant reflec-tors along the first resonant reflec-tors to sky
Between filter direction and lens axis y-axis direction angle；
The determination method of the second resonant reflec-tors posture are as follows:
Wherein, θc2(x) it is filtered along the second resonant reflec-tors to space for the normal of the second resonant reflec-tors
The angle of wave device direction and lens axis in x-axis direction, θc2It (y) is the normal of the second resonant reflec-tors along the second resonant reflec-tors to sky
Between filter direction and lens axis y-axis direction angle.
2. a kind of light path design method of High power multi-pass amplification laser system according to claim 1, which is characterized in that
First resonant reflec-tors, the second resonant reflec-tors are located at the both ends of system, and the amplifier is located at the side of spatial filter
Face, the plasma electro-optical switch and polarizing film are located at that spatial filter is ipsilateral, and the polarizing film is located at plasma electric light
Between switch and the second resonant reflec-tors.
3. a kind of light path design method of High power multi-pass amplification laser system according to claim 2, which is characterized in that
It further include verifying whether the laser system meets engineer application, specific verification method before step S1 are as follows:
The amplification number of passes of the laser system is N, and array of orifices spacing is a, and the focal length of 2 lens is respectively F1And F2IfAndThen the laser system meets engineer application, conversely, the laser system is unsatisfactory for work
Cheng Yingyong not can be carried out light path design.
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| CN109378680B (en) * | 2018-11-03 | 2020-08-04 | 中国科学院上海光学精密机械研究所 | Window-free main amplification system of high-power laser device |
| CN113204126B (en) * | 2021-04-26 | 2022-08-30 | 中国科学院上海光学精密机械研究所 | Debugging device and method for multi-pass cascade amplification laser driver |
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