CN1290982A - Method for preparing super lattice quasi-period structure dielectric material and equipment - Google Patents
Method for preparing super lattice quasi-period structure dielectric material and equipment Download PDFInfo
- Publication number
- CN1290982A CN1290982A CN00119007.5A CN00119007A CN1290982A CN 1290982 A CN1290982 A CN 1290982A CN 00119007 A CN00119007 A CN 00119007A CN 1290982 A CN1290982 A CN 1290982A
- Authority
- CN
- China
- Prior art keywords
- quasi
- frequency
- periodic
- crystal
- paracycle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 56
- 239000003989 dielectric material Substances 0.000 title 1
- 239000000463 material Substances 0.000 claims abstract description 30
- 239000013598 vector Substances 0.000 claims abstract description 20
- 230000003287 optical effect Effects 0.000 claims abstract description 15
- 238000010168 coupling process Methods 0.000 claims abstract description 8
- 230000008878 coupling Effects 0.000 claims abstract description 7
- 238000005859 coupling reaction Methods 0.000 claims abstract description 7
- 239000013078 crystal Substances 0.000 claims description 30
- 230000000295 complement effect Effects 0.000 claims description 13
- 238000002360 preparation method Methods 0.000 claims description 11
- 239000000470 constituent Substances 0.000 claims description 8
- 238000003475 lamination Methods 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 4
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000002178 crystalline material Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 230000000737 periodic effect Effects 0.000 description 5
- 230000010287 polarization Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- PLXMOAALOJOTIY-FPTXNFDTSA-N Aesculin Natural products OC[C@@H]1[C@@H](O)[C@H](O)[C@@H](O)[C@H](O)[C@H]1Oc2cc3C=CC(=O)Oc3cc2O PLXMOAALOJOTIY-FPTXNFDTSA-N 0.000 description 1
- 229910013641 LiNbO 3 Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000001451 molecular beam epitaxy Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000004549 pulsed laser deposition Methods 0.000 description 1
Images
Landscapes
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
Monocrystal ferroelectric material is produced into quasi-period electric domains and the parameters are so selected that the reciprocal lattice vector in reciprocal is made to meet the quasi-phase matching condition in optical parameter coupling process. The quasi-period structure consists of the quasi-period sequence arrangement of two, A and B, base elements, and the sequence may be obtained through projection process, in which in a two-dimensional tetragonal lattice one straight line with slope tan theta is drawn, a projection area has a width of sin teta+cos theta, and the projected points of the lattice points on the straight line constitute a two-component quasi-period sequence with projection angle of theta. Thus, the present invention utilizes quasi-period structure material in multiple quasi-phase matching of coupling parameter process.
Description
The present invention relates to quasi-periodic structure the dielectric body superlattice material, the preparation method is set, LiNbO especially
3(LN), LiTaO
3(LT) and other ferroelectric superlattice materials preparation (also can comprise non-ferroelectric nonlinear optical material) and the application aspect the optical parameter process thereof be set.
Existing dielectric fine structure material mainly is meant cycle dielectric body superlattice material, particularly period polarized LiNbO
3(LN), LiTaO
3(LT) and other ferroelectric crystals (also can comprise non-ferroelectric nonlinear optical material), existing bulk, waveguide type is also arranged.This type of material has been widely used in various optical parameter processes, as frequency multiplication and frequency, optical parametric oscillation and the amplification etc. of laser.It can be converted to laser frequency one new frequency or be converted to from a certain fixed frequency can be tuning in a certain frequency range, to satisfy the demand of different application field to different wave length laser.Patent ZL94111519.4 has provided under the room temperature condition LiTaO
3Period polarized technology in crystal.Period polarized dielectric body superlattice is applied to laser frequency conversion non-linear optical field with standard position (QPM) technology that is complementary.Can revise because the position phase mismatch between each parameter that effect of dispersion causes makes that the frequency inverted effect is strengthened by the periodic modulation of non-linear susceptibility.
The objective of the invention is dielectric body superlattice material introducing paracycle nonlinear optics laser frequency field, choose needed some reciprocal lattice vectors many groups reciprocal lattice vector of design between the turned letter of dielectric body superlattice paracycle by structural parameters and participate in some optical parameter processes simultaneously, make a plurality of parametric processes can satisfy different accurate positions simultaneously and be complementary condition and intercouple, causing efficiently, high order harmonic component produces.
The object of the present invention is achieved like this: a kind of paracycle the dielectric body superlattice material method to set up paracycle, electricdomain with ferroelectric single crystal material is made quasi-periodic structure, then prepare required wafer for non-ferroelectric crystal with the method for machining, pressing quasi-periodic sequence then adopts the method for lamination to arrange, or use MOCVD, PLD, MBE, the preparation of technology such as Sol-Gel.
The alternative condition of aiming at cycle parameter is that reciprocal lattice vector satisfies accurate condition that is complementary in the coupling light parametric process in making between its turned letter.Quasi-periodic structure is made up of two constituent elements usually, is promptly arranged by quasi-periodic sequence by two primitives of A, B to constitute, and this sequence can obtain with the method for projection.The straight line that promptly to do a slope in a two-dimension square dot matrix be tan θ, view field's width is sin θ+cos θ.Lattice point in the zone has just constituted the two constituent element quasi-periodic sequences that projected angle is θ to the subpoint of this straight line.Paracycle of the present invention, the dielectric body superlattice material promptly was the material with micro-structural with the said method setting.
Above-mentioned paracycle dielectric body superlattice method to set up, the parametric process that is suitable for comprise frequency multiplication and frequently, difference frequency and optical parameter is amplified and vibration.
The dielectric body superlattice material of quasi-periodic structure of the present invention is that LT and LN are the ferroelectric crystal and the non-ferroelectric non-linear optical crystal of representative, and has above-mentioned geometry.
From the physical angle analysis, because periodic structure can provide a reciprocal lattice vector, this reciprocal lattice vector G can participate in light nonlinear interaction in medium, compensation of phase mismatch, make the laser frequency transfer process under accurate position is complementary condition, to be achieved, i.e. Δ k+G=0.Because periodic structure can only provide one group of reciprocal lattice vector G=2m π/∧, ∧ is the cycle size, so block period superlattice often can only participate in a parametric process (as frequency multiplication and frequency etc.) effectively.Realize the cascade of two parametric processes if desired, as frequency tripling (be frequency multiplication+and frequently), then need to use the super crystal lattice material of two different cycles, finish in two steps: obtain frequency multiplication with a crystal earlier, with second crystal frequency multiplication and fundamental frequency are obtained frequency tripling with frequency again.Other parametric processes also can the rest may be inferred.
Preparation method of the present invention is: for ferroelectric crystal, utilize room temperature high-voltage pulse Polarization technique, the ferroelectric domain of ferroelectric crystal is pressed certain predetermined quasi-periodic sequence polarization, thereby the non linear coefficient of realizing material is pressed quasi-periodic modulation; Then need adopt the method for lamination for non-ferroelectric crystal is that the method for machining prepares required wafer, press quasi-periodic sequence then and arrange, or use MOCVD, and PLD, MBE, technology such as Sol-Gel prepare.Wherein the structural parameters of quasi-periodic structure are provided with according to the requirement of actual accurate the parametric process that is complementary.Described laser parameter process comprises frequency multiplication and frequency, difference frequency and combination thereof.
Scientific value of the present invention is that standard is brilliant, the quasi-periodic structure material is introduced nonlinear optics, and the cycle dielectric body superlattice of utilization is realized that the accurate position of the single parametric process principle that is complementary extends to and utilizes paracycle dielectric body superlattice crystal to realize that the multiple accurate position of coupling paameter process is complementary.Using value of the present invention be by paracycle dielectric body superlattice special setting can satisfy the accurate position of a plurality of parametric processes simultaneously and be complementary, this need be passed through several processes, the laser frequency transfer process that adopts some crystal to finish is finished with single crystal.For example Fig. 5 is the efficient output effect figure that obtains frequency tripling.
The invention will be further described below in conjunction with accompanying drawing with by example:
Fig. 1 is two constituent element dielectric body superlattice paracycle structural representations
Fig. 2 is coupling frequency tripling optical parameter process schematic diagram
Fig. 3 is in the quasi-periodic structure, and first-harmonic, frequency multiplication and frequency tripling power conversion are with the change curve (theoretical value) of superlattice length, and Y-axis is an each harmonic intensity, and X-axis is a crystal length
Fig. 4 is a frequency multiplication spectrum of scheming Periodic Superlattice surely, and promptly paracycle, superlattice were to the shg efficiency (theoretical value) of different wave length
Fig. 5 is the frequency tripling experimental result of Fig. 1 superlattice paracycle, and laser is by the 480nm blue light output that paracycle, superlattice produced efficient 30%
Fig. 6 is the most frequently used method that quasi-periodic sequence is set: projecting method.
Introduce quasi-periodic structure below, explanation realizes the concrete method to set up that the accurate position of many reference amounts process is complementary on this basis.
Two general constituent element quasi-periodic structures are to be arranged by quasi-periodic sequence by two primitives of A, B to constitute, and this sequence can obtain with the method for projection.Shown in figure six, the straight line that to do a slope in a two-dimension square dot matrix be tan θ, view field's width is sin θ+cos θ.Lattice point in the zone has just constituted the two constituent element quasi-periodic sequences that projected angle is θ to the subpoint of this straight line.
Its general term formula is:
In the formula,
[x] expression is to rounding, and τ is the projection tangent of an angle, promptly
tanθ。C
0Be a constant, only relevant with the phase place at peak in the fourier spectra of structure.When
The time, the sequence of generation is the Fibonacci sequence of standard.
General paracycle, the reciprocal lattice vector of superlattice structure can be write following form:
But wherein τ no longer is a constant, but can set as required, is reflected on the superlattice structure, and τ is by the employed projected angle decision of formation sequence.
Realize the frequency tripling position condition that is complementary:
Technology in the past realizes that frequency tripling need use two crystal, finishes in two stages.Utilize first crystal to realize frequency multiplication, make frequency multiplication and fundamental frequency and produce frequency tripling frequently with second crystal again.This is the condition difference because the required position of two processes is complementary, and two kinds of different structures must be set be satisfied.Utilize dielectric body superlattice LT paracycle, LN or other paracycle the dielectric body superlattice ferroelectric material, body superlattice LT, LN that can be by structural parameters or other paracycle the dielectric body superlattice ferroelectric material, can be by the setting of structural parameters, choose different reciprocal lattice vectors compensate respectively frequency multiplication with the position of process frequently mismatch mutually, make and frequently and difference frequency two processes in same block of paracycle superlattice accurate simultaneously be complementary, two processes are coupled, and directly produce frequency tripling from a crystal.The concrete plan of establishment is as follows, establish frequency multiplication with and frequently the mutually mismatch of process be respectively:
Δk
1=4π／λ(n
2ω-n
ω)
Δk
2=2π／λ(3n
3ω-2n
2ω-n
ω)
Wherein λ is a fundamental wavelength, n
w, n
2w, n
3wBe respectively first-harmonic, the refractive index of frequency multiplication and frequency tripling.
Utilize two reciprocal lattice vectors compensate respectively frequency multiplication with frequently position mismatch mutually:
G
m，n=Δk
1
G
m＇，n＇=Δk
2
We can obtain concrete structural parameters according to this formula.For two constituent element quasi-periodic structures, its length is respectively Da, and Db with its reciprocal lattice vector formula substitution following formula, can get
For a concrete frequency tripling process, Δ k
1, Δ k
2Be constant, m, n, m ', n ' also can be chosen as required, also can think constant.The substitution following formula can get.
By appropriately choosing the structural parameters of dielectric body superlattice paracycle, can realize frequency tripling efficiently to arbitrary wavelength.For example, to dielectric body superlattice LT paracycle, when incident wavelength is 1.440um, frequency multiplication and and wave vector mismatch frequently be respectively Δ k
1=0.356um
-1With Δ k
2=1.004um
-1, the Fibonacci structure of common Fibonacci and popularization all can't provide reciprocal lattice vector to compensate this two wave vector mismatches simultaneously.And, can realize this point easily as adopting two constituent element quasi-periodic structures of arbitrary projection angle.We are with (1,1) reciprocal lattice vector coupling frequency multiplication process, with (3,2) reciprocal lattice vector coupling and process frequently, i.e. and m=1, n=1, m '=3, n '=2.Can get τ=0.2232 this moment, and D=21.6um is keeping regulating Da under the constant condition of τ and D then, Db, and Lc is to obtain bigger effective nonlinear coefficient.Calculating shows, works as Da=13.12um, Db=18.65um, and during Lc=9.31um, the effective nonlinear coefficient maximum, this structure can produce 480nm blue light frequency tripling efficiently to the 1.440um first-harmonic.Lc represents positive farmland length.D is the average structure parameter.
Except can directly obtaining frequency tripling conversion efficiently,, by tuning fundamental wavelength, also can realize the frequency multiplication of a plurality of frequencies, and considerable conversion efficiency is arranged because quasi-periodic structure has abundant reciprocal lattice vector.So this type of material also can be used for making the Multi Colour Lasers frequency doubling device.
Paracycle dielectric body superlattice preparation method and embodiment.1. for ferroelectric crystal, can adopt " room temperature outfield Polarization technique " to choose thick Z pellet more than or equal to 0.2mm, one side plates electrode paracycle, another side plates flat electrodes, and the forward high-voltage pulse that adopts electric field strength to be about 20KV/mm-30KV/mm (for LT and the LN crystal with proportioning components) carries out polarization paracycle to wafer.The sample of polarization paracycle can be observed at microscopically by corrosion.2. then prepare required wafer for non-ferroelectric crystal, press quasi-periodic sequence then and adopt the method for lamination to arrange, or use MOCVD, PLD, MBE, the preparation of technology such as Sol-Gel with the method for machining.
Paracycle dielectric body superlattice application: (1) makes the multiwavelength laser frequency doubling device, finishes the frequency multiplication of different wave length laser with a crystal.(2) high order harmonic component of finishing laser is changed and making polychrome frequency doubling device, as frequency tripling, and output in the time of quadruple etc. and frequency multiplication and high order frequency.(3),, can realize that the optical parameter of multi-wavelength is amplified and optical parametric oscillation with a pump light source with a dielectric body superlattice material.
This is provided with thinking and may extend to other quasi-periodic sequence such as multicomponent quasi-periodic sequence and some non-periodic sequence, only needs this structure can provide corresponding reciprocal lattice vector to participate in a plurality of laser frequency transfer processes simultaneously.Different superlattice structures shows characteristics separately in the optical parameter process, different nonlinear crystalline material also has different dispersion characteristics.But be provided with thinking and method and the above when these materials are used for frequency inverted there is no essential difference, and the preparation method is also the same substantially, and therefore, these all do not exceed the included scope of the present invention.
Claims (4)
1. the dielectric body superlattice material of a quasi-periodic structure is provided with the preparation method, make domain structure paracycle with ferroelectric single crystal material, then prepare required wafer for non-ferroelectric crystal with the method for machining, pressing quasi-periodic sequence then adopts the method for lamination to arrange, or use MOCVD, PLD, MBE, prepared such as Sol-Gel, it is characterized in that the selection to the quasi-periodic structure parameter is that reciprocal lattice vector satisfies accurate condition that is complementary in the coupling light parametric process in making between its turned letter: this quasi-periodic structure is by A, two primitives of B are pressed quasi-periodic sequence and are arranged formation, this sequence can obtain with the method for projection, the straight line that promptly to do a slope in a two-dimension square dot matrix be tan θ, view field's width is sin θ+cos θ, and the lattice point in the zone has just constituted the two constituent element quasi-periodic sequences that projected angle is θ to the subpoint of this straight line.
2. by the preparation method that is provided with of the dielectric body superlattice material of the described quasi-periodic structure of claim 1, it is characterized in that this superlattice crystalline material is a kind of by the ferroelectric crystal that polarizes paracycle, as LN, LT, KTP etc.
3. by the preparation method that is provided with of the dielectric body superlattice material of the described quasi-periodic structure of claim 1, the lattice material that it is characterized in that frequency tripling is provided with as follows, promptly with frequency process cascade frequency multiplication process, from a crystal, directly obtain frequency tripling, with following formula: be provided with frequency multiplication with and the mutually mismatch of process frequently:
Δk
1=4π／λ(n
2ω-n
ω)
Δk
2=2π／λ(3n
3ω-2n
2ω-n
ω)
Wherein λ is a fundamental wavelength, n
w, n
2w, n
3wBe respectively first-harmonic, the refractive index of frequency multiplication and frequency tripling; Utilize two reciprocal lattice vectors compensate respectively frequency multiplication with frequently position mismatch mutually, keeping under the constant condition of average structure parameter D regulating Da then according to D=τ Da+Db, Db, Lc is to obtain bigger effective nonlinear coefficient.
One kind paracycle the dielectric body superlattice material, it is characterized in that with LT and LN being that the ferroelectric crystal and the non-ferroelectric nonlinear optical crystal of representative has geometry as claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001190075A CN1144331C (en) | 2000-10-11 | 2000-10-11 | Method for preparing super lattice quasi-period structure dielectric material and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001190075A CN1144331C (en) | 2000-10-11 | 2000-10-11 | Method for preparing super lattice quasi-period structure dielectric material and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1290982A true CN1290982A (en) | 2001-04-11 |
| CN1144331C CN1144331C (en) | 2004-03-31 |
Family
ID=4587404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001190075A Expired - Fee Related CN1144331C (en) | 2000-10-11 | 2000-10-11 | Method for preparing super lattice quasi-period structure dielectric material and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1144331C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244354A (en) * | 2011-06-08 | 2011-11-16 | 南京大学 | Infrared laser in ultra quantum conversion limit based on optic superlattice and construction method thereof |
| CN104793287A (en) * | 2015-04-07 | 2015-07-22 | 南京大学 | Production method of ferroelectric superlattice |
| CN105116664A (en) * | 2015-09-23 | 2015-12-02 | 南京工程学院 | Method for simultaneously achieving laser frequency doubling and line aggregation in optical superlattice |
| CN105514787A (en) * | 2015-11-10 | 2016-04-20 | 南京邮电大学 | Double-wavelength any scale wavelength converter for gradual change nested optical superlattice structure |
| CN108166065A (en) * | 2017-12-12 | 2018-06-15 | 南京大学 | A kind of method for preparing lithium niobate single crystal thin film domain structure |
| CN108560060A (en) * | 2018-04-18 | 2018-09-21 | 重庆科技学院 | Lithium niobate nanometer farmland processing based on PFM and imaging method |
| CN111046588A (en) * | 2019-12-30 | 2020-04-21 | 南京南智先进光电集成技术研究院有限公司 | Chirp quasiperiodic structure superlattice material and design method thereof |
-
2000
- 2000-10-11 CN CNB001190075A patent/CN1144331C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244354A (en) * | 2011-06-08 | 2011-11-16 | 南京大学 | Infrared laser in ultra quantum conversion limit based on optic superlattice and construction method thereof |
| CN102244354B (en) * | 2011-06-08 | 2013-05-15 | 南京大学 | Infrared laser in ultra quantum conversion limit based on optic superlattice and construction method thereof |
| CN104793287A (en) * | 2015-04-07 | 2015-07-22 | 南京大学 | Production method of ferroelectric superlattice |
| CN105116664A (en) * | 2015-09-23 | 2015-12-02 | 南京工程学院 | Method for simultaneously achieving laser frequency doubling and line aggregation in optical superlattice |
| CN105514787A (en) * | 2015-11-10 | 2016-04-20 | 南京邮电大学 | Double-wavelength any scale wavelength converter for gradual change nested optical superlattice structure |
| CN105514787B (en) * | 2015-11-10 | 2018-09-18 | 南京邮电大学 | A kind of gradual change nesting optical superlattice structure dual wavelength arbitrary proportion wavelength shifter |
| CN108166065A (en) * | 2017-12-12 | 2018-06-15 | 南京大学 | A kind of method for preparing lithium niobate single crystal thin film domain structure |
| CN108560060A (en) * | 2018-04-18 | 2018-09-21 | 重庆科技学院 | Lithium niobate nanometer farmland processing based on PFM and imaging method |
| CN108560060B (en) * | 2018-04-18 | 2020-11-27 | 重庆科技学院 | Lithium niobate nano domain processing and imaging method based on PFM |
| CN111046588A (en) * | 2019-12-30 | 2020-04-21 | 南京南智先进光电集成技术研究院有限公司 | Chirp quasiperiodic structure superlattice material and design method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1144331C (en) | 2004-03-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Feng et al. | Harmonic generations in an optical Fibonacci superlattice | |
| Fradkin-Kashi et al. | Multiple-wavelength quasi-phase-matched nonlinear interactions | |
| Arie et al. | Quasi phase matching in two-dimensional nonlinear photonic crystals | |
| CN1144331C (en) | Method for preparing super lattice quasi-period structure dielectric material and equipment | |
| Mu et al. | Locally periodically poled LNOI ridge waveguide for second harmonic generation | |
| US20040207903A1 (en) | Electric field poling of ferroelectric materials | |
| CN1218448C (en) | Biperiod superlattice and its application in laser frequency converter | |
| Wang et al. | High-efficiency frequency converters with periodically-poled Rb-doped KTiOPO4 | |
| Niu et al. | Multi-color laser generation in periodically poled KTP crystal with single period | |
| Myers | Periodically poled materials for nonlinear optics | |
| Fejer | Nonlinear optical frequency conversion: material requirements, engineered materials, and quasi-phasematching | |
| Younesi et al. | Periodic poling with short period for thin film lithium niobate waveguides | |
| JP3884197B2 (en) | Fabrication method of domain-inverted structure | |
| CN1219345C (en) | Setting method for supercrystalline lattice all solid state red-yellow-green three-color laser | |
| Hellström | Nanosecond optical parametric oscillators and amplifiers based on periodically poled KTiOPO4 | |
| CN1172367A (en) | Method for preparation of quasi-period micron super crystal lattice and its application on laser frequency conversion | |
| Ming | Superlattices and microstructures of dielectric materials | |
| CN1226814C (en) | Method for setting super crystalline lattice all solid state red-yellow-green-blue four-color laser | |
| CN1220311C (en) | Multiple wave frequency multiplication quasi phase matching photo crystal | |
| Zhao et al. | Tunable output of second harmonic generations in photonic quantum well structures made of nonlinear material | |
| Mutter et al. | Backward wave optical parametric oscillation in a waveguide | |
| JP3447078B2 (en) | Optical wavelength conversion element | |
| DE4029852A1 (en) | Electrically polarised domain prodn. in substrate - by laser beam heating ferroelectric substrate in electric field | |
| Bloembergen | Polymers in nonlinear optics: fundamentals and applications | |
| Shur et al. | Applied Physics Reviews |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |