CN207765784U - Dipulse loop laser amplifier - Google Patents
Dipulse loop laser amplifier Download PDFInfo
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- CN207765784U CN207765784U CN201721717585.4U CN201721717585U CN207765784U CN 207765784 U CN207765784 U CN 207765784U CN 201721717585 U CN201721717585 U CN 201721717585U CN 207765784 U CN207765784 U CN 207765784U
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Abstract
The utility model is related to a kind of dipulse loop laser amplifiers, to carry out annular amplification to two laser pulses comprising form the first light path access and the second light path access of annular light channel structure；First light path access includes that the first polarizer, the second polarizer, the first inside optical path component being arranged between the first polarizer and the second polarizer, the first distorting lens and the first polarization rotator part being arranged between the second polarizer and the first distorting lens, the first inside optical path component include first laser amplifier, the first spatial filter, the first optoelectronic switch, second laser amplifier；Second light path access includes third polarizer, the 4th polarizer, the second inside optical path component being arranged between third polarizer and the 4th polarizer, the second distorting lens and the second polarization rotator part being arranged between third polarizer and the second distorting lens, and the second inside optical path component includes third laser amplifier, the second optoelectronic switch, second space filter, the 4th laser amplifier.
Description
Technical field
The utility model is related to a kind of dipulse loop laser amplifiers, belong to laser amplifier field.
Background technology
From the eighties in last century, laser amplification technique is greatly developed, more efficient multi-way enlarged structure
Instead of traditional MOPA (Master Oscillator Power Amplifier) structure.However multi-way enlarged structure due to
The limitation of main amplifier itself and booster amplifier gain, it has to the complicated preamplifier system using expensive, and due to
Off-axis design is used in such a way that far field is injected, in order to avoid vignetting losses, it has to increase the length of main enlarged cavity, lead
Cause system is tediously long.Traditional multi-way amplification uses the mode of single beam injection extraction energy, since initial flux is relatively low, main amplification
There are a large amount of undrawn energy in device.In order to overcome drawbacks described above, a variety of configurations are proposed to this both at home and abroad, such as Chinese patent Shen
Please No. 201621228576.4 disclose a kind of new and effective high power loop laser amplifier.However before above-mentioned file medium wave
Corrector is limited to the beam alignment correction ability that incident angle of reflection angle is excessive, and the effective aperture of required wave-front corrector is much
More than beam size, manufacture difficulty and cost are all larger, and so that it is used certain limitation.
It is, therefore, desirable to provide a kind of efficient high energy dipulse loop laser amplifier configuration, to solving current superlaser
The problems of system is necessary.
Utility model content
It, can effectively calibration of laser the purpose of this utility model is to provide a kind of dipulse loop laser amplifier
In pulse caused by optical element the problem of phase distortion.
In order to achieve the above objectives, the utility model provides the following technical solutions：A kind of dipulse loop laser amplifier is used
To carry out annular amplification to first laser pulse, second laser pulse, the dipulse loop laser amplifier includes forming ring
The the first light path access and the second light path access of shape light channel structure；The first light path access include the first polarizer, second partially
It shakes device, the first inside optical path component, the first distorting lens and the setting that are arranged between first polarizer and the second polarizer
The first polarization rotator part between second polarizer and the first distorting lens, first inside optical path component include the
One laser amplifier, the first spatial filter, the first optoelectronic switch, second laser amplifier；The second light path access includes
Third polarizer, the 4th polarizer, the second inside optical path component being arranged between the third polarizer and the 4th polarizer,
Second distorting lens and the second polarization rotator part being arranged between the third polarizer and the second distorting lens, in described second
Portion's optical path component includes third laser amplifier, the second optoelectronic switch, second space filter, the 4th laser amplifier；
First pulse laser is injected into after the first polarizer through the first inside optical path component to the second polarizer, transmission
By first polarizer and the first polarization rotator part to first distorting lens, first distorting lens is by described first
Laser pulse is reflected back the first polarization rotator part, and the first polarization rotator part is reflected back through first distorting lens
First laser pulse polarization state rotation is carried out by the first polarization rotator part, and then the first laser pulse is through institute
The reflection of the second polarizer is stated, through third polarizer reflection, is transmitted through the second polarization rotator part to be transferred to described the
The first laser pulse-echo is returned the second polarization rotator part by two distorting lens by second distorting lens, and described the
One laser pulse is after second distorting lens is reflected back the second polarization rotator part by second polarization rotator
Part carries out polarization state rotation, is then transmitted through third polarizer, the second inside optical path component to the 4th polarizer, by institute
It states the 4th polarization and first pulse laser is reflexed into first polarizer, first polarizer is by the first laser
Pulse-echo is to first inside light path so that first laser pulse weight in the dipulse loop laser amplifier
Multiple cycle is exported the first laser pulse by second polarizer until first optoelectronic switch is powered off；
Second pulse laser is injected into after the 4th polarizer through the second inside optical path component to third polarizer, transmission
By the third polarizer and the second polarization rotator part to second distorting lens, second distorting lens is by described second
Laser pulse is reflected back the second polarization rotator part, and the second polarization rotator part is reflected back through second distorting lens
Second laser pulse polarization state rotation is carried out by the second polarization rotator part, and then the second laser pulse is through institute
The reflection of third polarizer is stated, through second polarizer reflection, is transmitted through the first polarization rotator part to be transferred to described the
The second laser pulse-echo is returned the first polarization rotator part by one distorting lens by first distorting lens, and described the
Dual-laser pulse is after first distorting lens is reflected back the first polarization rotator part by first polarization rotator
Part carries out polarization state rotation, is then transmitted through the second polarizer, the first inside optical path component to first polarizer, by institute
It states the first polarization and second pulse laser is reflexed into the 4th polarizer, the 4th polarizer is by the second laser
Pulse-echo is to second inside light path so that first laser pulse weight in the dipulse loop laser amplifier
Multiple cycle is exported the first laser pulse by second polarizer until first optoelectronic switch is powered off.
Further, the dipulse loop laser amplifier further includes the first reflection being arranged in the loop configuration
Mirror and the second speculum；First speculum is by the first laser pulse, second laser pulse in second polarizer
It reflects and transmits between third polarizer；Second speculum is by the first laser pulse, second laser pulse described
It reflects and transmits between first polarizer and the 4th polarizer.
Further, first spatial filter, the image planes of second space filter and object plane are end to end.
Further, first spatial filter, second space filter are pin-hole type spatial filter or slit-type
Spatial filter.
Further, pulsewidth, the second laser of annular chamber the chamber length and incident first laser pulse of the loop configuration
The pulsewidth of pulse matches.
Further, the distance between first optoelectronic switch, second optoelectronic switch are more than light institute within the burst length
The distance passed by.
Further, first optoelectronic switch, the second optoelectronic switch are Pockers cell or other Polarization Control devices.
Further, first polarizer, the second polarizer, third polarizer and the 4th polarizer are Brewster's angle
Polarizing film or 45 ° of polarizing films or other polarized light splitting devices.
Further, the dipulse loop laser amplifier further includes being inserted in the first laser amplifier, second
Half-wave plate between laser amplifier, third laser amplifier, the 4th laser amplifier.
Further, the first polarization rotator part is quarter-wave plate or Faraday polarization apparatus or active polarization control
Device processed, the second polarization rotator part are quarter-wave plate or Faraday polarization apparatus or active polarization controller part.
Further, the first polarization rotator part is quarter-wave plate or Faraday polarization apparatus or active polarization control
Device processed, the second polarization rotator part are quarter-wave plate or Faraday polarization apparatus or active polarization controller part.
The beneficial effects of the utility model are：The dipulse loop laser amplifier of the utility model is as a result of double
Distorting lens, so as to the phase distortion in effective calibration of laser pulse.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings in detail
It describes in detail bright as after.
Description of the drawings
Fig. 1 is the structural schematic diagram of dipulse loop laser amplifier shown in the utility model embodiment one；
Fig. 2 is the structural schematic diagram of dipulse loop laser amplifier shown in the utility model embodiment two.
Specific implementation mode
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.
Shown in Figure 1, dipulse loop laser amplifier shown in the utility model embodiment one is to sharp by two strands
Light pulse exports after carrying out annular amplification, so as to, acquisition highest amplification medium energy storage maximum in output energy
Extraction efficiency.The dipulse loop laser amplifier includes the first light path access and the second light path to form annular light channel structure
Access.The first light path access includes the first polarizer 1, the second polarizer 8, is arranged in first polarizer 1 and second
The first inside optical path component, the first distorting lens 10 and setting between polarizer 8 is in second polarizer, 8 and first distorting lens
The first polarization rotator part 9 between 10.First inside optical path component includes first laser amplifier 2, the filter of the first space
Wave device 21, the first optoelectronic switch 6, second laser amplifier 7.The second light path access includes that third polarizer the 13, the 4th is inclined
Shake device 20, the second inside optical path component being arranged between 13 and the 4th polarizer 20 of the third polarizer, the second distorting lens
11 and the second polarization rotator part 12 for being arranged between 13 and second distorting lens 11 of the third polarizer, inside described second
Optical path component includes third laser amplifier 14, the second optoelectronic switch 15, second space filter 18, the 4th laser amplifier
19.Two strands of laser pulses being injected into dipulse loop laser amplifier can be referred to as first laser pulse 30 (in Fig. 1 and figure
It is indicated by the solid line in 2) and second laser pulse 40 (in fig. 1 and 2, being represented by dashed line).The first laser pulse 30 and
Dual-laser pulse 40 is injected into loop laser amplifier simultaneously from the first polarizer 11 and the 4th polarizer 20 respectively.This first swash
Light pulse 30 recycles in the dipulse loop laser amplifier until described first after being injected by first polarizer 1
Optoelectronic switch 6 powers off and is exported the first laser pulse 30 by second polarizer 8, and the second laser pulse 40 is logical
It is recycled until second optoelectronic switch in the dipulse loop laser amplifier after crossing the 4th polarizer 20 injection
15 power off and are exported the second laser pulse 40 by the third polarizer 13.In the present embodiment, with the first polarization
The first laser pulse 30 of state (such as p-polarization state) injection is incident to the first polarizer 11, and the first polarizer 11 is for transmiting first
The linearly polarized light of polarization state (such as p-polarization state), the linearly polarized light of the second polarization state of reflection (such as s polarization states)；With the first polarization state
The second laser pulse 40 of (such as p-polarization state) injection is incident to the 4th polarizer 20, and the 4th polarizer 20 is for transmiting first partially
The linearly polarized light of polarization state, the linearly polarized light of the second polarization state of reflection (such as s polarization states).
Endless form of the first laser pulse 30 in dipulse loop laser amplifier is as follows：The first laser of injection
Pulse 30 after the first polarizer 1 by being incident to first laser amplifier 2, to be amplified；Amplified first laser pulse
30 are incident to the first spatial filter 21, and the first spatial filter 21 can effectively filter out the space of the first laser pulse 30
Modulation；Subsequent first laser pulse 30 is transmitted through the first optoelectronic switch 6, and first optoelectronic switch 6 does not work at this time, and first swashs
The polarization state of light pulse 30 does not change；First laser pulse 30 is transmitted through first laser amplifier 2, to be put again
Greatly；It is transmitted through the second polarizer 8 and the first polarization rotator part 9, at this point, first laser pulse 30 is in the first polarization state；So
This is reflected back the first polarization rotator part 9 by the first distorting lens 10 in the first laser pulse 30 of the first polarization state afterwards, again thoroughly
It was shot through the first polarization rotator part 9, at this point, be reflected back the first polarization rotator part 9 through the first distorting lens 10 first swashs
Light pulse 30 carries out polarization state rotation by the first polarization rotator part 9, and in the present embodiment, polarization state is rotated by 90 °, this
One laser pulse 30 is changed into the second polarization state by the first polarization state；And then the first laser pulse 30 is anti-through the second polarizer 8
It penetrates, by 12 to the second distorting lens 11 of third polarizer 13 and the second polarization rotator part, the first laser pulse 30 is through second
Distorting lens 11 is reflected back the second polarization rotator part 12, and first laser pulse 30 is transmitted through the second polarization rotator part again
12, the first laser pulse 30 is after the second distorting lens 11 is reflected back the second polarization rotator part 12 by the second polarization rotator
Part 12 carries out polarization state rotation again, and polarization state is rotated by 90 °, which is changed into first partially by the second polarization state
Polarization state；And then after first laser pulse 30 is transmitted through third polarizer 13 with the first polarization state, through third laser amplifier 14
It is amplified；Subsequent first laser pulse 30 is transmitted through the second optoelectronic switch 15, at this point, the second optoelectronic switch 15 works, the
One laser pulse 30 is changed into the second polarization state by the first polarization state；The first laser pulse 30 is filtered by second space later
Device 18, the second space filter 18 can effectively filter out the spatial modulation of the first laser pulse 30；First laser pulse
30 are amplified by the 4th laser amplifier 19, then pass through the 4th polarizer 20, the first polarizer 1, by the 4th polarizer
20 reflex to the first polarizer 1, first laser pulse 30 is reflexed to by first laser amplifier 2 by the first polarizer 11 again so that
The first laser pulse 30 recycles again in the dipulse loop laser amplifier.
When the first optoelectronic switch 66, the second optoelectronic switch 15 remain at working condition, first laser pulse 30 will
It is constrained on to recirculate in the dipulse loop laser amplifier and carries out multiple amplification, amplify when in dipulse loop laser
In device after certain number, after the power-off of the first optoelectronic switch 66 is changed working condition, first laser pulse 30 is maintained at
Second polarization state, and reflected and exported by the second polarizer 88.
Endless form of the second laser pulse 40 in dipulse loop laser amplifier is as follows：The second laser of injection
Pulse 40 after the 4th polarizer 20 by being incident to the 4th laser amplifier 19, to be amplified；Amplified second laser arteries and veins
Punching 40 is incident to second space filter 18, and second space filter 18 can effectively filter out the sky of the second laser pulse 40
Between modulate；Subsequent second laser pulse 40 is transmitted through the second optoelectronic switch 15, and second optoelectronic switch 15 does not work at this time, the
The polarization state of dual-laser pulse 40 does not change；Second laser pulse 40 is transmitted through third laser amplifier 14, to obtain
Amplify again；It is transmitted through third polarizer 13 and the second polarization rotator part 12, at this point, second laser pulse 40 is inclined in first
Polarization state；Then the second laser pulse 40 is reflected back the second polarization rotator part 12 by the second distorting lens 11, is transmitted through again
The second polarization rotator part 12, at this point, being reflected back the second laser arteries and veins of the second polarization rotator part 12 through the second distorting lens 11
Punching 40 carries out polarization state rotation by the second polarization rotator part 12, and in the present embodiment, polarization state is rotated by 90 °, this second
Laser pulse 40 is changed into the second polarization state by the first polarization state；And then the second laser pulse 40 is anti-through third polarizer 13
It penetrates, by 9 to the first distorting lens 10 of the second polarizer 8 and the first polarization rotator part, which becomes through first
Shape mirror 10 is reflected back the first polarization rotator part 9, and second laser pulse 40 is transmitted through the first polarization rotator part 9 again, should
Second laser pulse 40 after the first distorting lens 10 is reflected back the first polarization rotator part 9 by the first polarization rotator part 9 again
Secondary progress polarization state rotation, polarization state are rotated by 90 °, which is changed into the first polarization state by the second polarization state；
And then it after second laser pulse 40 is transmitted through the second polarizer 8 with the first polarization state, is put through second laser amplifier 7
Greatly；Subsequent second laser pulse 40 is transmitted through the first optoelectronic switch 6, at this point, the first optoelectronic switch 6 works, second laser arteries and veins
Punching 40 is changed into the second polarization state by the first polarization state；The second laser pulse 40 later, should by the first spatial filter 21
First spatial filter 21 can effectively filter out the spatial modulation of the second laser pulse 40；Second laser pulse 40 passes through
One laser amplifier 2 is amplified, and then passes through the first polarizer 1, the 4th polarizer 20, and the is reflexed to by the first polarizer 1
Second laser pulse 40 is reflexed to the 4th laser amplifier 19 so that the 4th swashs by four polarizers 20 again by the 4th polarizer 20
Light pulse recycles again in the dipulse loop laser amplifier.
When the first optoelectronic switch 6, the second optoelectronic switch 15 remain at working condition, 40 pulse of second laser will be by
It constrains in recirculate in the dipulse loop laser amplifier and carries out multiple amplification, when in dipulse loop laser amplifier
It is interior after certain number, the second optoelectronic switch 15 is powered off, second laser pulse 40 is maintained at the second polarization state, and by third
The reflection output of polarizer 13.
In the present embodiment, first spatial filter 21 include the first lens 3 for being oppositely arranged and the second lens 5 and
Filtering aperture 4 on first lens, 3 and second lens, 5 confocal point is set, and the second space filter 18 includes phase
The first lens 16 and the second lens 18 to setting and the filter being arranged on first lens, 16 and second lens, 18 confocal point
Wave hole door screen 17.First spatial filter 21, the image planes of second space filter 18 and object plane are end to end.In other embodiment
In, first spatial filter 21, second space filter 18 can be pin-hole type spatial filter or slit-type space filtering
Point focusing can be then changed into line focus according to slit-type spatial filter, greatly reduce plasma plug-hole by device
Possibility.
In the present embodiment, the annular chamber chamber length of the loop configuration and pulsewidth, the second laser arteries and veins of first laser pulse 30
The pulsewidth of punching 40 matches.The distance between first optoelectronic switch 6, second optoelectronic switch 15 are more than light within the burst length
The distance passed by, first optoelectronic switch 6, the second optoelectronic switch 15 can be arranged the first of the dipulse ring laser
Any position of light path access, the second light path access.First optoelectronic switch 6, the second optoelectronic switch 15 can be Pockers cell,
Or other Polarization Control devices, according to other Polarization Control devices, then the selection of the Polarization Control device can be according to different mouths
Diameter is selected.First optoelectronic switch 6, the second optoelectronic switch 15 operating mode use boost operating mode, or use
Move back pressure operating mode.The first laser amplifier 2, second laser amplifier 7, third laser amplifier 14, the 4th laser are put
Big device 19 is suitable for the transmission-type laser gain medium and pumping source of any states of matters and character such as solid, liquid, gas, is having
When body is implemented, first laser amplifier 2, second laser amplifier 7, third laser amplifier 14, the 4th laser amplifier 19
According to fan-out capability requirement or adjust its relevant parameter, such as gain, quantity, length and size etc., or adjustment position.At this
In embodiment, which further includes being inserted in the first laser amplifier 2, second laser amplifier
7, the half-wave plate between third laser amplifier 14, the 4th laser amplifier 19, to remove the influence that thermal depolarization effect is brought.
In other embodiments, other adaptive optics can be used to replace for first distorting lens 10, the second distorting lens 11.This
In embodiment, the first polarization rotator part 9 is quarter-wave plate or Faraday polarization apparatus or active polarization controller part,
The second polarization rotator part 12 is quarter-wave plate or Faraday polarization apparatus or active polarization controller part.In this implementation
The first polarizer 1, the second polarizer 8, third polarizer 13, the 4th polarizer 20 used in example are 45 ° of polarizing films, at it
The first polarizer 1, the second polarizer 8, third polarizer 13, the 4th polarizer 20 can also be Brewster's angle in his embodiment
Polarizing film or Brewster optical window or polarization beam apparatus or polarization spectroscope or other polarizers.
Refer to Fig. 2, dipulse loop laser amplifier and one institute of embodiment shown in the embodiments of the present invention two
The structure of the dipulse loop laser amplifier shown is substantially similar, difference lies in：The dipulse loop laser of the present embodiment two is put
Big device further includes the first speculum 21 and the second speculum 22 being arranged in the loop configuration；First speculum 21 will
Transmission is reflected in the first laser pulse 30, second laser pulse 40 between second polarizer 8 and third polarizer 13；
Second speculum 22 is inclined in first polarizer 1 and the 4th by the first laser pulse 30, second laser pulse 40
It shakes to reflect between device 20 and transmit.When cycle of the first laser pulse 30 in dipulse loop laser amplifier：Partially by first
The first laser pulse 30 that the rotary device 9 that shakes changes polarization state reflexes to the first speculum 21 by the second polarizer 8, then by the
One speculum 21 reflexes to third polarizer 13；First laser pulse 30 is after the 4th laser amplifier 19, by the 4th polarization
Device 20 reflexes to the second speculum 22, then reflexes to the first polarizer 1 by the second speculum 22, the first laser pulse 30 again by
First polarizer 1 reflexes to first laser amplifier 2.Cycle of the second laser pulse 40 in dipulse loop laser amplifier
When：The second laser pulse 40 for changing polarization state by the second polarization rotator part 12 reflexes to first by third polarizer 13
Speculum 21, then the second polarizer 8 is reflexed to by the first speculum 21；Second laser pulse 40 is by first laser amplifier 2
Afterwards, the second speculum 22 is reflexed to by the first polarizer 1, then the 4th polarizer 20 is reflexed to by the second speculum 22, this second
Laser pulse 40 reflexes to the 4th laser amplifier 19 by the 4th polarizer 20 again.In the present embodiment, used first partially
It is 45 ° of polarizing films that device 1, the second polarizer 8, third polarizer 13, the 4th polarizer 20 shake, so, in the present embodiment two, need
The first speculum 21 and the second speculum 22 are used, embodiment one is compared with embodiment two, due to the first polarizer 1, second
Polarizer 8, third polarizer 13, the 4th polarizer 20 are 45 ° of polarizing films so can cancel the reflection of the first speculum 21, second
Mirror 22, so as to reduce the possibility of the damage of speculum in the case of high throughput.
Above-mentioned dipulse chemical laser amplifier has the following advantages that：
1, dipulse loop laser amplifier is as a result of co-deflection mirror (the first distorting lens 10, the second distorting lens 11),
So as to the phase distortion in effective calibration of laser pulse；
2, dipulse loop laser amplifier be applicable to arbitrary transmission-type gain media dipulse transmit in opposite directions amplification,
Coaxial amplification laser amplifier configuration, effectively increases the extraction efficiency of laser gain medium energy storage；
3, it by making first laser pulse 30, second laser pulse 40 be recycled in loop configuration, may be implemented in principle
The annular amplification of arbitrary number of times, so as to efficiently control output beam quality, relaxes the limitation to Implantation Energy, effectively subtracts
Small preamplifier system scale；
4, as a result of the first spatial filter 21 and second space filter 18, so as to effective filter out light beam
In spatial modulation, and the image planes of the first spatial filter 21, second space filter 18 and object plane are end to end, can be effectively
The diffraction effect for inhibiting laser pulse to be transmitted in intracavitary, keeps the amplification of high light beam quality；
5, by using loop configuration, keep amplifier architecture compacter.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of dipulse loop laser amplifier, which is characterized in to first laser pulse, second laser pulse progress
Annular amplification, the dipulse loop laser amplifier includes the first light path access and the second light path to form annular light channel structure
Access；The first light path access includes the first polarizer, the second polarizer, setting in first polarizer and the second polarization
The first inside optical path component, the first distorting lens between device and be arranged between second polarizer and the first distorting lens
One polarization rotator part, first inside optical path component include first laser amplifier, the first spatial filter, the first photoelectricity
Switch, second laser amplifier；The second light path access includes third polarizer, the 4th polarizer, is arranged in the third
The second inside optical path component, the second distorting lens between polarizer and the 4th polarizer and setting are in the third polarizer and the
The second polarization rotator part between two distorting lens, second inside optical path component include third laser amplifier, the second light
Electric switch, second space filter, the 4th laser amplifier；
It is transmitted through to the second polarizer through the first inside optical path component after the first laser impulses injection to the first polarizer
First polarizer and the first polarization rotator part are to first distorting lens, and first distorting lens is by the first laser
The first polarization rotator part is returned in pulse-echo, and the of the first polarization rotator part is reflected back through first distorting lens
One laser pulse carries out polarization state rotation by the first polarization rotator part, and then the first laser pulse is through described the
Two polarizers reflect, and through third polarizer reflection, are transmitted through the second polarization rotator part to be transferred to second change
The first laser pulse-echo is returned the second polarization rotator part by shape mirror by second distorting lens, and described first swashs
Light pulse after second distorting lens is reflected back the second polarization rotator part by the second polarization rotator part into
Row polarization state rotates, and is then transmitted through third polarizer, the second inside optical path component to the 4th polarizer, by described the
Four polarizations are by the first laser pulse-echo to first polarizer, and first polarizer is by the first laser pulse
First inside light path is reflexed to so that the first laser pulse repeats to follow in the dipulse loop laser amplifier
Ring is exported the first laser pulse by second polarizer until first optoelectronic switch is powered off；
Through the second inside optical path component to third polarizer after the second laser impulses injection to the 4th polarizer, it is transmitted through
The third polarizer and the second polarization rotator part are to second distorting lens, and second distorting lens is by the second laser
The second polarization rotator part is returned in pulse-echo, and the of the second polarization rotator part is reflected back through second distorting lens
Dual-laser pulse carries out polarization state rotation by the second polarization rotator part, and then the second laser pulse is through described the
Three polarizers reflect, and through second polarizer reflection, are transmitted through the first polarization rotator part to be transferred to first change
The second laser pulse-echo is returned the first polarization rotator part by shape mirror by first distorting lens, and described second swashs
Light pulse after first distorting lens is reflected back the first polarization rotator part by the first polarization rotator part into
Row polarization state rotates, and is then transmitted through the second polarizer, the first inside optical path component to first polarizer, by described the
One polarization is by the second laser pulse-echo to the 4th polarizer, and the 4th polarizer is by the second laser pulse
Second inside light path is reflexed to so that the first laser pulse repeats to follow in the dipulse loop laser amplifier
Ring is exported the first laser pulse by second polarizer until first optoelectronic switch is powered off.
2. dipulse loop laser amplifier as described in claim 1, which is characterized in that the dipulse loop laser amplification
Device further includes the first speculum and the second speculum being arranged in the loop configuration；First speculum is by described first
Transmission is reflected in laser pulse, second laser pulse between second polarizer and third polarizer；Second speculum
The first laser pulse, second laser pulse are reflected to transmission between first polarizer and the 4th polarizer.
3. dipulse loop laser amplifier as described in claim 1, which is characterized in that first spatial filter,
The image planes of two spatial filters and object plane are end to end.
4. dipulse loop laser amplifier as described in claim 1, which is characterized in that first spatial filter,
Two spatial filters are pin-hole type spatial filter or slit-type spatial filter.
5. dipulse loop laser amplifier as described in claim 1, which is characterized in that the annular chamber chamber of the loop configuration
It is long to match with the incident pulsewidth of first laser pulse, the pulsewidth of second laser pulse.
6. dipulse loop laser amplifier as described in claim 1, which is characterized in that first optoelectronic switch, second
The distance between optoelectronic switch is more than the distance that light is passed by within the burst length.
7. dipulse loop laser amplifier as described in claim 1, which is characterized in that first optoelectronic switch, second
Optoelectronic switch is Pockers cell or Polarization Control device.
8. dipulse loop laser amplifier as described in claim 1, which is characterized in that first polarizer, second are partially
Device, third polarizer and the 4th polarizer shake for Brewster's angle polarizing film or 45 ° of polarizing films or polarized light splitting device.
9. dipulse loop laser amplifier as described in claim 1, which is characterized in that the dipulse loop laser amplification
Device further includes being inserted in the first laser amplifier, second laser amplifier, third laser amplifier, the 4th laser amplifier
Between half-wave plate.
10. dipulse loop laser amplifier as described in claim 1, which is characterized in that the first polarization rotator part
For quarter-wave plate or Faraday polarization apparatus or active polarization controller part, the second polarization rotator part is a quarter
Wave plate or Faraday polarization apparatus or active polarization controller part.
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| CN201721717585.4U CN207765784U (en) | 2017-12-12 | 2017-12-12 | Dipulse loop laser amplifier |
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| CN201721717585.4U CN207765784U (en) | 2017-12-12 | 2017-12-12 | Dipulse loop laser amplifier |
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| CN207765784U true CN207765784U (en) | 2018-08-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107845947A (en) * | 2017-12-12 | 2018-03-27 | 苏州大学 | Dipulse loop laser amplifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107845947A (en) * | 2017-12-12 | 2018-03-27 | 苏州大学 | Dipulse loop laser amplifier |
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