CN207967581U - Chirped laser pulse frequency spectrum shaping system based on spectrum angle dispersion - Google Patents
Chirped laser pulse frequency spectrum shaping system based on spectrum angle dispersion Download PDFInfo
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Abstract
The utility model provides a kind of chirped laser pulse frequency spectrum shaping system based on spectrum angle dispersion, it is related to laser pulse amplifying technique field, the chirped laser pulse frequency spectrum shaping system based on spectrum angle dispersion of being somebody's turn to do includes dispersion compensation module, optical parameter conversion module, optical delay module and reflecting module；Frequency spectrum is after the chirped laser pulse of shaping after dispersion compensation module, the light of different frequency enters optical parameter conversion module with different incidence angles respectively after being opened by dispersion compensation module dispersion, it pumps light pulse and passes through optical delay module successively, optical parameter conversion module is entered with the incidence angle not conllinear with chirped laser pulse after reflecting module, after with pumping light pulse in optical parameter conversion module energy transfer occurs for chirped laser pulse, launch the frequency spectrum shaping for realizing chirped laser pulse by optical parameter conversion module, it is relatively low to the utilization rate of signal light energy to alleviate used chirped laser pulse frequency spectrum shaping system in the prior art, and the more low technical problem of relative usage flexibility.
Description
Technical field
The utility model is related to laser pulse amplifying technique fields more particularly to a kind of chirp based on spectrum angle dispersion to swash
Light pulse frequency spectrum shaping system.
Background technology
Since laser pulse occurs, just direction shorter and shorter towards pulsewidth always, that intensity is higher and higher is developed.It is super
Short, superpower laser pulse has the extreme physical conditions such as highfield, high-intensity magnetic field, High Voltage, it has also become people are in high field object
The powerful tool that reason, fast ignition, material science, femtosecond processing and other fields conduct a research.From D.Strcik in 1985 and
The chirp radar technology of microwave band is introduced the amplification sector of laser pulse by G.Mourou, and then forms chirped pulse amplification skill
Postoperative, the development of high power ultra-short laser pulse has just started a new journey.So far, in the world multiple laboratories and
Research institution is all made of CPA technologies and is put as master, and it is defeated in the ultrashort pulse of PW and the above magnitude successively to obtain peak power
Go out.Although being easier to obtain superhigh intensity ultrashort laser pulse using CPA technologies, it there are still some drawbacks, such as
, along with stronger amplified spontaneous emission (ASE), the contrast of compression afterpulse is being influenced in amplification process；Secondly, CPA is put
Fuel factor caused by gain media used in big system is long, Energy extraction is limited is serious, is also easy to produce self-focusing and amplified
The defects such as single-pass gain is low in journey；In addition, very important, spectrum gain narrowing, gain saturaition in amplification process
It is obvious, it influences the pulse after recompression and original width is not achieved.
Common pulse frequency spectrum shaping methods mainly have：F-P etalons, birefringent filter, Acoustic-Optic Programmable Dispersive filter
Wave device (AOPDF), light intensity modulator etc..Essentially these methods are all to utilize the saturating of filter different frequency ingredient
Penetrating rate, nearby transmitance makes pulse frequency spectrum shape become less than the transmissivity of both sides frequency content with this to reach pulse center frequencies
In the distribution of flat-top or intermediate recess, to which spread-spectrum width is to compensate the gain narrowing in amplification process.Utilize this kind of line
Property filtering technique, although can make spectrum width increase one to twice or so, reach the bandwidth of nm up to a hundred, and it is whole so that frequency spectrum is obtained
Shape, but the contrast ration or noise that are come out under normal conditions from regeneration chamber are relatively low；In addition, these nearly all methods are all
The form of amplitude limit or slicing, using off-energy as cost, the utilization rate of signal light energy is not high；Finally, F-P etalons, double
This kind of filter element of refraction filter is generally only used for a kind of shaping of signal optical spectrum, for expecting the frequency of arbitrary shape
Spectral structure then needs to redesign device, it appears flexibility is relatively low.
Utility model content
The first of the utility model is designed to provide a kind of chirped laser pulse frequency spectrum shaping based on spectrum angle dispersion
System, with alleviate in the prior art used in chirped laser pulse frequency spectrum shaping system to the utilization rate of signal light energy compared with
It is low, and the more low technical problem of relative usage flexibility.
To achieve the goals above, the utility model uses following technical scheme：
A kind of chirped laser pulse frequency spectrum shaping system based on spectrum angle dispersion provided by the utility model, including dispersion
Module, optical parameter conversion module, optical delay module and reflecting module；
The dispersion compensation module is for scattering the photochromic of different frequency in chirped laser pulse, the optical parameter conversion module
For amplifying the energy of chirped laser pulse, the optical delay module is for adjusting pump light pulsion phase to chirped laser arteries and veins
Be flushed to the time delay up to optical parameter conversion module, the reflecting module for changing pumping light pulse optical path direction；
Frequency spectrum is after the chirped laser pulse of shaping after the dispersion compensation module, and the light of different frequency is by the dispersion compensation module
Dispersion enters the optical parameter conversion module with different incidence angles respectively after opening, and pumping light pulse is prolonged by the optics successively
The optical parameter conversion module, institute are entered with the incidence angle not conllinear with chirped laser pulse after slow module, the reflecting module
It states after in the optical parameter conversion module energy transfer occurs for chirped laser pulse and the pumping light pulse, by the beche-de-mer without spike
Amount conversion module is launched.
Further, the optical parameter conversion module uses optically erasing crystal；
The optically erasing crystal is by the energy transfer of the pumping light pulse to the chirped laser pulse so that institute
The energy for stating chirped laser pulse increases.
Further, the dispersion compensation module uses prism element；
Frequency spectrum waits for that by the prism element dispersion occurs for the chirped laser pulse of shaping, so that different frequency
It is photochromic scatter after obtain different incidence angles.
Further, the dispersion compensation module uses optical grating element；
Frequency spectrum waits for that by the optical grating element dispersion occurs for the chirped laser pulse of shaping, so that different frequency
It is photochromic scatter after obtain different incidence angles.
Further, the reflecting module uses the first speculum；
First speculum is used to reflect the incident next pumping light pulse, and extremely by the pump light pulse-echo
In the optically erasing crystal.
Further, the optical delay module includes multiple second speculums, and multiple second speculums are successively
Arrangement.
Further, further include first laser transmitting module；
The first laser transmitting module is arranged in the front of the dispersion compensation module；
The first laser transmitting module is for emitting the chirped laser pulse.
Further, further include second laser transmitting module；
The second laser transmitting module is arranged in the front of the reflecting module；
The second laser transmitting module is for emitting the pumping light pulse.
Further, the optically erasing crystal uses bbo crystal.
Further, the light launched through the optically erasing crystal include frequency spectrum shaping after the chirped laser arteries and veins
The pump light that punching and energy reduce.
Further, the light launched through the optically erasing crystal further includes newly generated ideler frequency light.
The beneficial effects of the utility model are：
A kind of chirped laser pulse frequency spectrum shaping system based on spectrum angle dispersion provided by the utility model, including dispersion
Module, optical parameter conversion module, optical delay module and reflecting module, frequency spectrum wait for that the chirped laser pulse of shaping is incident to dispersion
Module so that the light of different frequency is opened by dispersion compensation module dispersion, so that the different frequency light after dispersion is with different incidence
Angle enters optical parameter conversion module；Meanwhile pumping light pulse and passing through optical delay module, reflecting module successively, to be different from Zhou
The incident angles of laser pulse of singing enter optical parameter conversion module, so that pumping light pulse and the different frequency after dispersion
Chirped laser pulse coupling in optical parameter conversion module, occur energy conversion so that pumping light pulse portion
Divide energy that can be transferred on chirped laser pulse, and with pump light energy transfer can occur for the light of different frequency respectively, i.e.,
The light of different frequency is incident to optical parameter conversion module with different nonlinear angles, so that the wave of the light of each frequency
The wave vector of arrow, the wave vector of pumping light pulse and ideler frequency light collectively forms vector triangle, and then ensures to greatest extent each
The light of frequency realizes the phase matched between pumping light pulse and ideler frequency light, swashs with chirp to improve pumping light pulse
Energy conversion efficiency between light pulse, and increase the spectrum of the chirped laser pulse after being emitted by optical parameter conversion module
Bandwidth；It is transferred to chirped laser pulse using the portion of energy of pumping light pulse is made in optical parameter conversion module so that Zhou
The energy of laser pulse of singing is amplified, to increase the utilization rate of energy；Meanwhile in the light path that pumping light pulse is passed through
It is provided with optical delay module, adjust pumping light pulse by optical delay module reaches optical parameter conversion with chirped laser pulse
The time difference of module, i.e. pump light pulsion phase to the time delay of chirped laser pulse, swash to flexibly adjust amplified chirp
The frequency displacement of the frequency spectrum of light pulse, to more effectively overcome the undesirable optical effect such as gain narrowing, spectral red shift.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific implementation mode or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, other drawings may also be obtained based on these drawings.
Fig. 1 is the schematic diagram for the chirped laser pulse frequency spectrum shaping system based on spectrum angle dispersion that embodiment one provides；
Fig. 2 is the phase matched schematic diagram of chirped laser pulse, pumping light pulse and ideler frequency light that embodiment one provides；
Fig. 3 be when the different role that provides of embodiment one dissipates rate nonlinear angle offset with the schematic diagram of wavelength change；
Fig. 4 is the spectrum distribution signal under the opposite pumping light pulse different delay of chirped laser pulse that embodiment one provides
Figure；
Fig. 5 is the schematic diagram after the chirped laser pulse frequency spectrum shaping that embodiment one provides.
Icon：10- dispersion compensation modules；20- optical parameter conversion modules；30- reflecting modules；40- optical delay modules.
Specific implementation mode
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to this practicality
Novel protected range.
In the description of the present invention, it should be noted that term " first ", " second " are used for description purposes only, and
It should not be understood as indicating or implying relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition
The concrete meaning of language in the present invention.
Embodiment one：
As shown in Figs. 1-5, the chirped laser pulse frequency spectrum shaping system provided in this embodiment based on spectrum angle dispersion, packet
Include dispersion compensation module 10, optical parameter conversion module 20, optical delay module 40 and reflecting module 30；Dispersion compensation module 10 is used for chirp
The photochromic of different frequency scatters in laser pulse, and optical parameter conversion module 20 is used to make to be incident to the pump light of crystal and chirp swashs
Parameter coupling occurs for light pulse, and optical delay module 40 reaches light for adjusting pump light pulsion phase to chirped laser pulse
The time delay of parameter transform module 20, reflecting module 30 for changing pumping light pulse optical path direction；Frequency spectrum waits for the chirp of shaping
Laser pulse is after dispersion compensation module 10, and the light of different frequency is opened by 10 dispersion of dispersion compensation module, and the light after dispersion is entered with different
Firing angle enters optical parameter conversion module 20, and optical delay module 40 is passed through in external pumping light pulse successively, reflecting module 30 reflects
To optical parameter conversion module 20, with pumping light pulse energy transfer occurs in optical parameter conversion module 20 for chirped laser pulse
Afterwards, launched by optical parameter conversion module 20.
Specifically, the chirped laser pulse frequency spectrum shaping system includes dispersion compensation module 10, optical parameter conversion module 20, optics
Postponement module 40 and reflecting module 30, frequency spectrum wait for that the chirped laser pulse of shaping is incident to dispersion compensation module 10 so that different frequency
Light opened by 10 dispersion of dispersion compensation module, the different frequency light after dispersion enters optical parameter conversion module 20 with different incidence angles；
Meanwhile optical delay module 40, reflecting module 30 are passed through in external pumping light pulse successively, with different from chirped laser pulse
Incident angles enter optical parameter conversion module 20, and pump light pulse and chirped laser pulse respectively with different incidence angles into
Enter optical parameter conversion module 20, that is, pumps light pulse and be incident to optical parameter modulus of conversion in the form of non-colinear with chirped laser pulse
Block 20, so that the chirped laser pulse of the different frequency after pumping light pulse and dispersion coupling in optical parameter conversion module 20
Cooperation is used, and energy conversion occurs so that pumping the portion of energy of light pulse can be transferred on chirped laser pulse, and different frequencies
With pump light energy transfer can occur for the light of rate respectively, i.e. the light of different frequency is incident to optical parameter with different nonlinear angles
Conversion module 20, so that the wave vector of the wave vector of the light of each frequency, the wave vector for pumping light pulse and ideler frequency light is common
Vector triangle is constituted, and then ensure that the light of each frequency realizes the phase matched with pumping light pulse and ideler frequency light, from
And the energy conversion efficiency between pumping light pulse and chirped laser pulse is improved, and increase by optical parameter conversion module
The spectral bandwidth of chirped laser pulse after 20 outgoing.
Wherein, the light of the chirped laser pulse after 10 dispersion of dispersion compensation module, different frequency is opened in space by dispersion,
And the light of light, that is, different wave length of different frequency, under a certain stationary phase matching angle, the light of different wave length corresponds to different
Nonlinear angle, and then the phase matched of a certain wavelength can be met；In general, in optical parameter conversion module 20
When effect, the complete phase-matching condition of single-frequency can only be met；Therefore, in order to make within the scope of chirp signal pulse frequency spectrum more
More wavelength components meet phase matched, and frequency spectrum is wider after making chirp signal pulse amplifying, then this may be used and is based on spectral modeling
The frequency spectrum shaping mode of dispersion allows each frequency content in chirped laser pulse to be incident to optical parameter turn with different nonlinear angles
Block 20 is changed the mold, each signal wave resultant pump light wave vector and corresponding ideler frequency light wave vector is made to collectively form vector triangle,
Reach each frequency of signal light and meets phase matched.
Meanwhile after carrying out parameter effect to chirped laser pulse, i.e., when chirped laser pulse passes through optical parameter modulus of conversion
When block 20, the gain of energy, this gain can be divided from the pumping light pulse obtaining portion being incident in optical parameter conversion module 20
Mode is for the Analogue Study on Spectrum Shaping Technology of the modes such as linear filtering, and the energy of chirped laser pulse is amplified, in turn
Increase the utilization rate of energy；Meanwhile it being provided with optical delay module 40 in the light path that pumping light pulse is passed through, pass through optics
Postponement module 40 adjusts the time difference that pumping light pulse reaches optical parameter conversion module 20 with chirped laser pulse, i.e. pump light arteries and veins
The time delay of the opposite chirped laser pulse of punching, so that the frequency displacement of the frequency spectrum of amplified chirped laser pulse is flexibly adjusted, to
More effectively overcome the undesirable optical effect such as gain narrowing, spectral red shift.
As shown in Fig. 2, label A is the wave vector of different frequency after chirped laser pulse dispersion, label B is pumping light pulse
Wave vector.
As shown in figure 3, being that chirped laser pulse passes through dispersion compensation module 1030, nonlinear angle offset when different role dissipates rate
With the schematic diagram of wavelength change.
As shown in Figure 5, wherein abscissa is wavelength, and ordinate is relative intensity, and the representative of label D figures is needed into line frequency
The frequency spectrum profile of the chirped laser pulse of shaping is composed, label C figures represent the frequency spectrum profile for completing frequency spectrum shaping.
In the optional scheme of the present embodiment, as shown in Figs. 1-5, dispersion compensation module 10 uses prism element；Frequency spectrum waits for shaping
Chirped laser pulse by prism element occur dispersion so that different frequency it is photochromic scatter after obtain different incidence
Angle.
Specifically, prism element may be used in dispersion compensation module 10, dispersion compensation module 10 is mainly used for wait for the chirp of shaping
The ingredient of different frequency is photochromic in laser pulse scatters, i.e., by the chirped laser pulse of different frequency, spatially dispersion is opened, from
And make the light of different frequency in chirped laser pulse with different incident angles to optical parameter conversion module 20, to maximum
Ensure to limit the phase matched of each frequency content, and then improves parameter transform efficiency and output spectrum bandwidth.
Wherein, the amplification process of chirped laser pulse can be divided into conllinear and non-colinear two ways, in conllinear parameter mistake
Cheng Zhong, the wave vector side of each light beam of signal light (i.e. chirped laser pulse), pump light (pumping light pulse) and ideler frequency light
To on the same line, and in non-colinear parametric process, signal light (i.e. chirped laser pulse), pump light (pump
Light pulse) and the wave vector direction of each light beam of ideler frequency light be not on same straight line, when between each light beam there are
Certain angle need not be divided original paper and can be automatically separated, and can be realized in larger wave-length coverage after parameter effect
Group-velocity Matching has better practicability；After three above-mentioned light beams meet complete phase matched, you can obtain maximum
Transfer efficiency, if but there are phase mismatch, transfer efficiency can reduce.
Similar, dispersion compensation module 10 uses optical grating element；Frequency spectrum waits for that the chirped laser pulse of shaping passes through optical grating element, makes
The photochromic of different frequency is obtained to scatter and obtain different incidence angles.
Specifically, grating is the optical device being made of the parallel scores of a large amount of monospacings.
In the optional scheme of the present embodiment, as shown in Figs. 1-5, optical parameter conversion module 20 is brilliant using optically erasing
Body；Optically erasing crystal will pump the energy transfer of light pulse to chirped laser pulse so that the energy of chirped laser pulse
Increase.
Specifically, optical parameter conversion module 20 is mainly used for the energy transfer that will to pump light pulse to chirped laser arteries and veins
Punching so that spectrum gain occurs for chirped laser pulse, so, optical parameter conversion module 20 uses optically erasing crystal, passes through
Optically erasing crystal makes chirped laser pulse and pump light pulse generation parameter transform process.
Further, optically erasing crystal can use bbo crystal.
Specifically, the entitled b-BaB2O4 crystal of bbo crystal sheet, is a kind of common nonlinear crystal, and it is functional, have
Extremely wide transparency range, the larger angle that matches, larger nonlinear factor, higher optic damage threshold value, the temperature in broadband
Matching and excellent optical homogeneity, the nonlinear frequency conversion performance from ultraviolet to middle in infra-red range are very good.
It should be noted that optically erasing crystal herein is not limited to use bbo crystal, it can also be used
He can realize the optical parameter crystal of energy transfer between pumping light pulse and chirped laser pulse.
In the optional scheme of the present embodiment, as shown in Figs. 1-5, reflecting module 30 uses the first speculum；First reflection
Mirror is used to reflect incident next pumping light pulse, and will be in pump light pulse-echo to optically erasing crystal.
Specifically, reflecting module 30 is for optically erasing crystal, that is, reflecting incident pump light pulse-echo
Module 30 can change the optical path direction of pumping light pulse.
Wherein, it is the optical element to be worked using reflection law that reflecting module 30, which uses the first speculum, the first speculum,
First speculum only changes the preceding line direction of light path.
In the optional scheme of the present embodiment, as shown in Figs. 1-5, optical delay module 40 includes multiple second speculums,
And multiple second speculums are arranged in order.
Specifically, optical delay module 40 is used to adjust the time delay between pumping light pulse and chirped laser pulse, that is, prolong
Length shortens the time that pump light pulsion phase reaches chirped laser pulse optical parameter conversion module 20.
Wherein, multiple second speculums are provided in optical delay module 40, and multiple second speculums are arranged in order,
Pumping light pulse needs to pass through multiple second speculums successively, and then the time difference is formed between chirped laser pulse, that is,
Time delay, time delay have the function of the amplified frequency spectrum of chirped laser pulse positive, can overcome the bad optics such as spectral red shift
Effect.
Further include first laser transmitting module as shown in Figs. 1-5 in the optional scheme of the present embodiment；First laser is sent out
It penetrates module to be arranged in the front of dispersion compensation module 10, first laser transmitting module is for emitting chirped laser pulse.
Specifically, first laser transmitting module is used to launch the chirped laser pulse that spectrum distribution is in Gaussian function number form.
Wherein, chirped laser pulse is a kind of laser pulse that frequency is changed linearly with the time, i.e. frequency is the time
Direct proportion function, generally by ultrashort pulse by stretcher broadening obtain；So laser emitting module includes laser emitter
And stretcher, laser emitter is for emitting ultrashort laser pulse, and stretcher is for broadening ultrashort laser pulse to form chirp
Laser pulse.
Wherein, the pulse duration of ultrashort laser pulse is generally less than 10-12Second, the duration of chirped laser pulse
About in ns (nanosecond) magnitude, i.e., 10-9Second or so.
Wherein, stretcher is that the time of ultrashort laser pulse is made to lengthen, and ultimately becomes the wider pulse signal of pulsewidth.
Further, further include second laser transmitting module；Second laser transmitting module is arranged before reflecting module 30
Side；Second laser transmitting module is for emitting pumping light pulse.
In the optional scheme of the present embodiment, as shown in Figs. 1-5, the light launched through optically erasing crystal includes frequency spectrum
The pumping light pulse that chirped laser pulse and energy after shaping reduce.
Specifically, optically erasing crystal is used to the portion of energy for pumping light pulse being transferred to chirped laser pulse, it is real
The spectrum gain of existing chirped laser pulse, and then the chirped laser pulse after gain is launched, while the pumping that energy reduces
Light pulse is launched also by optically erasing crystal.
Further, the light launched through optically erasing crystal further includes newly generated ideler frequency light.
Specifically, during pumping light pulse and energy transfer occurs for chirped laser pulse, ideler frequency also can be newly generated
Light, so that chirped laser pulse, pumping light pulse and ideler frequency light are to meet the conservation of energy and the conservation of momentum.
Wherein, ideler frequency light does not use generally after outgoing.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it
System；Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should
Understand：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of chirped laser pulse frequency spectrum shaping system based on spectrum angle dispersion, which is characterized in that including dispersion compensation module, light
Parameter transform module, optical delay module and reflecting module；
For the photochromic of different frequency in chirped laser pulse to scatter, the optical parameter conversion module is used for the dispersion compensation module
The energy of chirped laser pulse is amplified, the optical delay module arrives chirped laser pulse for adjusting pump light pulsion phase
Up to the time delay of optical parameter conversion module, the reflecting module for changing pumping light pulse optical path direction；
Frequency spectrum is after the chirped laser pulse of shaping after the dispersion compensation module, and the light of different frequency is by the dispersion compensation module dispersion
The optical parameter conversion module is entered with different incidence angles respectively after opening, the optical delay mould is passed through in pumping light pulse successively
The optical parameter conversion module, the Zhou are entered with the incidence angle not conllinear with chirped laser pulse after block, the reflecting module
After with the pumping light pulse in the optical parameter conversion module energy transfer occurs for laser pulse of singing, turned by the optical parameter
Mold changing block is launched.
2. the chirped laser pulse frequency spectrum shaping system according to claim 1 based on spectrum angle dispersion, which is characterized in that
The optical parameter conversion module uses optically erasing crystal；
The optically erasing crystal is by the energy transfer of the pumping light pulse to the chirped laser pulse so that the Zhou
Sing laser pulse energy increase.
3. the chirped laser pulse frequency spectrum shaping system according to claim 1 based on spectrum angle dispersion, which is characterized in that
The dispersion compensation module uses prism element；
Frequency spectrum waits for that by the prism element dispersion occurs for the chirped laser pulse of shaping, so that the light of different frequency
Dispersion obtains different incidence angles after opening.
4. the chirped laser pulse frequency spectrum shaping system according to claim 1 based on spectrum angle dispersion, which is characterized in that
The dispersion compensation module uses optical grating element；
Frequency spectrum waits for that by the optical grating element dispersion occurs for the chirped laser pulse of shaping, so that the light of different frequency
Dispersion obtains different incidence angles after opening.
5. the chirped laser pulse frequency spectrum shaping system according to claim 2 based on spectrum angle dispersion, which is characterized in that
The reflecting module uses the first speculum；
First speculum be used to reflect it is incident come the pumping light pulse, and by the pump light pulse-echo to described
In optically erasing crystal.
6. the chirped laser pulse frequency spectrum shaping system according to claim 1 based on spectrum angle dispersion, which is characterized in that
It further include first laser transmitting module；
The first laser transmitting module is arranged in the front of the dispersion compensation module；
The first laser transmitting module is for emitting the chirped laser pulse.
7. the chirped laser pulse frequency spectrum shaping system according to claim 1 based on spectrum angle dispersion, which is characterized in that
It further include second laser transmitting module；
The second laser transmitting module is arranged in the front of the reflecting module；
The second laser transmitting module is for emitting the pumping light pulse.
8. the chirped laser pulse frequency spectrum shaping system according to claim 2 based on spectrum angle dispersion, which is characterized in that
The optically erasing crystal uses bbo crystal.
9. the chirped laser pulse frequency spectrum shaping system according to claim 2 based on spectrum angle dispersion, which is characterized in that
The light launched through the optically erasing crystal include frequency spectrum shaping after the chirped laser pulse and energy reduce institute
State pump light.
10. the chirped laser pulse frequency spectrum shaping system according to claim 2 based on spectrum angle dispersion, feature exist
In the light launched through the optically erasing crystal further includes newly generated ideler frequency light.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281877A (en) * | 2018-03-14 | 2018-07-13 | 成都师范学院 | Chirped laser pulse frequency spectrum shaping system based on spectrum angle dispersion |
| CN110556699A (en) * | 2019-09-16 | 2019-12-10 | 西安电子科技大学 | High-energy high-light beam quality tunable optical parametric oscillator pumped by nanosecond laser |
-
2018
- 2018-03-14 CN CN201820349788.0U patent/CN207967581U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281877A (en) * | 2018-03-14 | 2018-07-13 | 成都师范学院 | Chirped laser pulse frequency spectrum shaping system based on spectrum angle dispersion |
| CN110556699A (en) * | 2019-09-16 | 2019-12-10 | 西安电子科技大学 | High-energy high-light beam quality tunable optical parametric oscillator pumped by nanosecond laser |
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