CN101572382A - Laser I-type phase matching nonlinear sum frequency device - Google Patents
Laser I-type phase matching nonlinear sum frequency device Download PDFInfo
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- 239000013078 crystal Substances 0.000 claims abstract description 140
- 230000003287 optical effect Effects 0.000 claims abstract description 32
- 230000010287 polarization Effects 0.000 claims abstract description 21
- 230000009021 linear effect Effects 0.000 claims description 19
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- QBLDFAIABQKINO-UHFFFAOYSA-N barium borate Chemical compound [Ba+2].[O-]B=O.[O-]B=O QBLDFAIABQKINO-UHFFFAOYSA-N 0.000 claims description 6
- 229910000160 potassium phosphate Inorganic materials 0.000 claims description 6
- 235000011009 potassium phosphates Nutrition 0.000 claims description 6
- RIUWBIIVUYSTCN-UHFFFAOYSA-N trilithium borate Chemical class [Li+].[Li+].[Li+].[O-]B([O-])[O-] RIUWBIIVUYSTCN-UHFFFAOYSA-N 0.000 claims description 5
- KIRWCRPCYCPJPE-UHFFFAOYSA-N aluminum barium(2+) borate Chemical compound B([O-])([O-])[O-].[Al+3].[Ba+2] KIRWCRPCYCPJPE-UHFFFAOYSA-N 0.000 claims description 4
- 238000007747 plating Methods 0.000 claims description 4
- WSMQKESQZFQMFW-UHFFFAOYSA-N 5-methyl-pyrazole-3-carboxylic acid Chemical compound CC1=CC(C(O)=O)=NN1 WSMQKESQZFQMFW-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 3
- 241000931526 Acer campestre Species 0.000 claims description 2
- UKDIAJWKFXFVFG-UHFFFAOYSA-N potassium;oxido(dioxo)niobium Chemical compound [K+].[O-][Nb](=O)=O UKDIAJWKFXFVFG-UHFFFAOYSA-N 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 10
- 238000005086 pumping Methods 0.000 abstract description 2
- 239000010453 quartz Substances 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- 235000012239 silicon dioxide Nutrition 0.000 description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910003334 KNbO3 Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- OJMOMXZKOWKUTA-UHFFFAOYSA-N aluminum;borate Chemical compound [Al+3].[O-]B([O-])[O-] OJMOMXZKOWKUTA-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- IDEDFOKHQXDWGJ-UHFFFAOYSA-N nonacesium triborate Chemical compound [Cs+].[Cs+].[Cs+].[Cs+].[Cs+].[Cs+].[Cs+].[Cs+].[Cs+].[O-]B([O-])[O-].[O-]B([O-])[O-].[O-]B([O-])[O-] IDEDFOKHQXDWGJ-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Abstract
The invention relates to a laser I-type sum frequency device, which comprises: sequentially arranging a fundamental frequency light source on a light path, pumping a frequency doubling crystal from an end face by the fundamental frequency light source, changing the polarization directions of residual fundamental frequency light and the frequency doubling light in a quartz optically active crystal behind the fundamental frequency light source, carrying out I-type sum frequency in a sum frequency crystal, and arranging a light splitting prism on an output light path according to a Brinell angle; the optical element is fixed on the optical tool base, and the optical tool base is fixed on the optical platform. The device adopts I-type phase matching sum frequency and a new nonlinear optical crystal, overcomes the defect that the commonly used sum frequency crystal is easy to deliquesce, and utilizes the advantage of larger effective nonlinear coefficient of the I-type phase matching sum frequency of the BABF crystal.
Description
Technical field
The present invention relates to a kind of laser and frequency device, particularly a kind of laser type I phase matching non-linear and frequency device.
Background technology
Utilize semiconductor laser (hereinafter to be referred as LD) pumping solid state gain medium, high efficiency, the high power All Solid-State Lasers of exploitation has compact conformation, long, efficient advantages of higher of life-span, can be applicable to fields such as industry, scientific research, medical treatment, military affairs, demonstration, become one of direction of the most active and tool prospect of laser field in recent years.To provide crucial lasing light emitter for photoetching, laser cleaning, laser processing and the laser three-D moulding etc. of microelectronics, micromechanics to ultraviolet, the development of deep ultraviolet wave band.
Existing ultraviolet 355nm laser normally directly carries out the II class by 1064nm laser fundamental frequency and its frequency multiplication and produces frequently, this is to be determined by frequency tripling crystal three lithium borates (hereinafter to be referred as LBO) commonly used, cesium triborate (hereinafter to be referred as CBO), barium metaborate (hereinafter to be referred as BBO), but these crystal all can deliquescence, use has brought inconvenience to crystal, must heat to crystal and prevent deliquescence.The nonlinear optical crystal BABF of recent findings has good physical and chemical performance: not deliquescence, easily plated film, light injury threshold height; Its II class frequency tripling effective nonlinear coefficient is half of LBO, and I class frequency tripling effective nonlinear coefficient is about 1.5 times of lbo crystal, yet existing frequency tripling output is 1064nm basic frequency laser frequency multiplication gained 532nm and residue fundamental frequency light and frequency, the polarization direction of this two-beam is a mutually orthogonal, and this gives and utilizes BABF crystal I class phase matched and the bigger effective nonlinear coefficient of frequency to bring inconvenience.As document 1:Ruikun Wu1993 at Applied Optics (Vol.32, No.6,971) delivered on described in " High-efficiency and compact blue source:intracavity frequency tripling by using LBO and BBO without the influence ofbirefringence ": it adopts the half-wave plate of 1064nm with fundamental frequency light (1064nm) polarization half-twist and frequency doubled light (532nm) the polarization constant I of carrying out class and frequency, what produce is identical with the polarization direction of former fundamental frequency light (not passing through the 1064nm half-wave plate) with frequency polarisation of light direction, but this method can only be used for the two-beam frequency satisfies one of them frequency half-wave plate, the design of another frequency full-wave plate, the polarization direction that can not be used for any two-beam is regulated.
Summary of the invention
The objective of the invention is to: provide a kind of and make them become parallel method by quadrature by the polarization direction that changes laser residue fundamental frequency light and frequency doubled light, fluoridize aluminium borate crystal of barium (hereinafter to be referred as BABF) I class and the requirement of phase matched frequently to satisfy, utilize the higher effective nonlinear coefficient of BABF crystal I class and frequency process, can realize having higher and frequency conversion efficiency with short nonlinear optical crystal like this, reduce again simultaneously walk from laser, laser type I phase matching non-linear and device frequently.This device can remedy the deficiency of the half-wave plate in the above-mentioned prior art, can regulate the polarization direction of the two-beam of optional frequency and satisfy the requirement that waits the nonlinear optical process phase matched with frequency.
The present invention seeks to realize like this:
The invention provides a kind of laser type I phase matching non-linear and frequency device (as shown in Figure 1), comprising:
One provides output light wavelength is the fundamental frequency light source 1 of 1064nm laser;
A frequency-doubling crystal 2;
One and frequency crystal 4;
An Amici prism 5; It is characterized in that, comprise that also one can make the polarization direction of residue fundamental frequency light and frequency doubled light become parallel gyrotropi crystal 3 by quadrature; On wherein said fundamental frequency light source 1 output light path successively order place described frequency-doubling crystal 2, described gyrotropi crystal 3 and described and crystal 5 frequently, with frequency crystal 5 output light path on place described Amici prism 5 by Brewster angle; Described frequency-doubling crystal 2, gyrotropi crystal 3 and frequency crystal 4 and Amici prism 5 all are fixed on the optics tool seat, and optics tool seat is fixed on the optical table;
Described gyrotropi crystal 3 is quartzy gyrotropi crystals, and it is shaped as cylindric disc, cuboid, six prisms, triangular prism; For z cuts, optical direction is the z direction of principal axis, and logical light face need polish and plate the anti-reflection film of respective wavelength, and the thickness on the optical direction is determined by following formula (1).
Designed quartzy gyrotropi crystal is respectively the laser of λ and 2 λ for wavelength, has and satisfies following relation:
α is the specific rotatory power of quartzy gyrotropi crystal in the formula, is the function of wavelength; 2 λ are that fundamental light wave is long, and λ is the frequency doubled light wavelength, and l is logical light length, and α (2 λ) is the specific rotatory power of fundamental frequency light, and α (λ) is the specific rotatory power of frequency doubled light,
Be the deflection anglec of rotation of the quartzy gyrotropi crystal of process of fundamental frequency light,
It is the deflection anglec of rotation of the quartzy gyrotropi crystal of process of frequency doubled light.
In above-mentioned technical scheme, also comprise two lens (first lens 6 and second lens 7); Wherein first lens 6 are arranged on the light path between described fundamental frequency light source 1 and the described frequency-doubling crystal 2; Wherein second lens 7 are arranged on the light path between described gyrotropi crystal 3 and the described frequency-doubling crystal 4.
In above-mentioned technical scheme, described first lens 6 and second lens 7 are planoconvex lens, dispersion compensation lens, or the lens of other type and optics.
In above-mentioned technical scheme, described Amici prism 5 is the Brewster angle prism, right-angle prism, isosceles prism.
In above-mentioned technical scheme, described fundamental frequency light source 1 is to mix Nd laser or Yb laser, can be continuous wave laser, Q-switched laser or lock film laser; The pulse duration of this fundamental frequency light source 1 can be millisecond, microsecond, nanosecond, psec or femtosecond.
In above-mentioned technical scheme, described frequency-doubling crystal 2 comprises: fluoridize aluminium borate barium (BABF), three lithium borates (LBO), barium metaborate (BBO), potassium niobate (KNbO3), titanyl potassium phosphate (KTP), periodic polarized metatitanic acid potassium phosphate (PPKTP), periodically poled lithium niobate (PPLN), period polarized lithium tantalate (PPLT) or other nonlinear optical crystal and optical superlattice crystal.
In above-mentioned technical scheme, described and frequently crystal 4 comprise: fluoridize aluminium borate barium (BABF), three lithium borates (LBO), titanyl potassium phosphate (KTP), periodic polarized metatitanic acid potassium phosphate (PPKTP), periodically poled lithium niobate (PPLN), period polarized lithium tantalate (PPLT) or other can be used for and nonlinear optical crystal and optical superlattice crystal frequently.
In above-mentioned technical scheme, described first lens 6 and second lens 7 are planoconvex lens, dispersion compensation lens, condenser lens.
Laser type I phase matching non-linear of the present invention and frequency device, the 1064nm fundamental frequency light of described fundamental frequency light source 1 output when frequency-doubling crystal 2 by frequency multiplication, be I class frequency multiplication, the polarization direction of residue fundamental frequency light and frequency doubled light is mutually orthogonal, in order to satisfy and the requirement of the I class phase matched of crystal frequently, with the frequency crystal before light path in place quartzy gyrotropi crystal 3, the polarization direction of residue fundamental frequency light and frequency doubled light is become parallel in gyrotropi crystal by quadrature, with the frequency crystal in carry out I class and frequently, then at Brewster angle prism place output 355nm Ultra-Violet Laser.
The invention has the advantages that:
Because laser type I phase matching non-linear of the present invention and frequency device have adopted quartzy gyrotropi crystal, and quartzy gyrotropi crystal adopts z to cut, optical direction is the z direction of principal axis, logical light face is carried out the anti-reflection film of polishing and plating respective wavelength, and has designed the thickness (equaling l) of quartzy gyrotropi crystal according to following specific design method:
If
For the angle that vibration plane turned over of optical activity crystal to a certain monochromatic linearly polarized light, know by experiment, it be proportional to light in quartzy gyrotropi crystal the length l by distance, promptly
α is the specific rotatory power of gyrotropi crystal in the formula, is the function of wavelength.
Be respectively the laser of λ and 2 λ for wavelength, have and satisfy following relation:
So the polarization direction of residue fundamental frequency light and frequency doubled light is become parallel in gyrotropi crystal by quadrature; Therefore can reach the polarization direction that makes residue fundamental frequency light and frequency doubled light becomes parallel by quadrature and utilizes and the I class phase matched and the bigger purpose of effective nonlinear coefficient frequently of crystal frequently.
In addition, laser type I phase matching non-linear of the present invention and frequently device adopted conduct of BABF crystal and crystal frequently, overcome commonly used now and the deliquescent shortcoming of frequency crystal.
Description of drawings
Fig. 1 is that laser type I phase matching non-linear of the present invention and frequency device are formed schematic diagram
Fig. 2 is of the present invention and frequently adopts the matched curve of the specific rotatory power of quartzy gyrotropi crystal in the device
Fig. 3 is outside the installation optimization back cavity of the present invention and exports the index path of ultraviolet laser device frequently
Fig. 4 is outside the present invention's two bundle optional frequency laser cavities and the index path of frequency device
The drawing explanation:
1-fundamental frequency light source; The 2-frequency-doubling crystal;
The 3-gyrotropi crystal; 4-and frequency crystal;
The 5-Amici prism; 6-first lens;
7-second lens
Embodiment
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Referring to accompanying drawing 1, make a kind of laser type I phase matching non-linear and frequency device (exporting the ultraviolet laser device with frequency outside the chamber).
Select for use wavelength be 1064nm, mix the Nd continuous wave laser as fundamental frequency light source 1, this fundamental frequency light source 1 also can be to transfer Q or lock film laser.
Frequency-doubling crystal 2 is selected lbo crystal for use, and its cutting angle is θ=90 °, φ=0 °, and mate temperature this moment is 148.5 ℃, is noncritical phase matching, two logical light faces all are coated with 1064nm and the two high deielectric-coating of 532nm.
Gyrotropi crystal 3 is selected quartzy gyrotropi crystal for use, and its specific design method is described as follows:
If
For the angle that vibration plane turned over of optical activity medium to a certain monochromatic linearly polarized light, know by experiment, it be proportional to light in medium the length l by distance, promptly
α is the specific rotatory power of medium in the formula, is the function of wavelength.
Be respectively the laser of λ and 2 λ for wavelength, have and satisfy following relation:
So the polarization direction of residue fundamental frequency light and frequency doubled light is become parallel in gyrotropi crystal by quadrature.
The specific rotatory power of quartz crystal
| Wavelength (micron) | α (degree/millimeter) | Wavelength (micron) | α (degree/millimeter) | Wavelength (micron) | α (degree/millimeter) |
| 0.257 | 143.27 | 0.431 | 42.60 | 0.671 | 16.54 |
| 0.325 | 80.46 | 0.486 | 32.77 | 0.728 | 13.92 |
| 0.344 | 70.59 | 0.532 | 27.82 | 0.760 | 12.67 |
| 0.361 | 63.63 | 0.546 | 25.53 | 0.795 | 11.59 |
| 0.382 | 55.63 | 0.589 | 51.75 | 1.064 | 6.52 |
| 0.404 | 48.95 | 0.656 | 17.32 | 1.342 | 3.89 |
These points are carried out match, adopt following formula:
A in the formula, b, c, d, e, f, g, h is a fitting constant, is respectively: a is a constant term, and b is the quadratic term coefficient, and c is negative quadratic term coefficient, and d is a coefficient once, and e is negative quadratic term constant, and f is the cubic term coefficient, and g is a negative once coefficient, h is negative once item constant; λ be optical maser wavelength (
c
lBe the light velocity in the vacuum, ω is a laser frequency).
The gained parameter value:
a＝2.0319
b＝20.642
c＝5.9098
d＝-17.472
e＝0.016705
f＝-7.29
g＝2.9355
h＝0.13832
The gained matched curve is (stain is an initial data, and red line is matched curve) as shown in Figure 2:
By the principle of least square:
Above-mentioned formula (1) can be used for any two wavelength X
1, λ
2Laser polarization direction rotation differ arbitrarily angled β, calculate the specific rotatory power α (λ of two wavelength according to formula (2)
1), α (λ
2), by formula (1) can calculate required crystal thickness
The diameter of quartzy gyrotropi crystal is the cylindric disc of 12mm, the machined parameters of the gyrotropi crystal 3 that calculates according to formula (1): thickness is 4.23mm, S/D is 20/10, the surface depth of parallelism is 10 "; two logical light faces are through polishing; and then be coated with 1064nm and the two high deielectric-coating of 532nm respectively, for example: the multilayer dielectric film of zirconium dioxide (ZrO2) and silicon dioxide (SiO2) crossover.
Select the BABF crystal for use with the frequency crystal 4, its cutting angle is θ=34.2 °, and two logical light faces all are coated with 1064nm, 532nm and the two high deielectric-coating of 355nm, for example: the multilayer dielectric film of zirconium dioxide (ZrO2) and silicon dioxide (SiO2) crossover.
Referring to accompanying drawing 3, make outside a kind of chamber of the present invention and export the ultraviolet laser device with frequency.
Select for use wavelength be 1064nm, mix the Nd laser as fundamental frequency light source 1, this fundamental frequency light source 1 can be continuously, transfer Q or lock film laser.
Frequency-doubling crystal 2 is selected ktp crystal for use, and its cutting angle is θ=69.6 °, φ=90 °, and mate temperature this moment is 100 ℃, is noncritical phase matching, two logical light faces all are coated with 1064nm and the two high deielectric-coating of 532nm.
Select the BABF crystal for use with the frequency crystal 4, its cutting angle is θ=34.2 °, and two logical light faces all are coated with 1064nm, 532nm and the two high deielectric-coating of 355nm.
Referring to accompanying drawing 4, make outside a kind of chamber of the present invention and export sodium gold-tinted laser aid with frequency.
Select for use wavelength to be respectively that the polarization direction is parallel to each other, wavelength is respectively 1064nm and 1319nm, mix the Nd continuous wave laser as fundamental frequency light source 1, this fundamental frequency light source 1 also can be continuously, transfer Q or lock film laser.
Select ktp crystal for use with the frequency crystal 4, cutting angle is θ=78.5 °, φ=0 °, mate temperature this moment is 37 ℃, be II class phase matched, effective nonlinear coefficient is 3.71pm/V, and an one logical light face is coated with 1064nm and the two high deielectric-coating of 1319nm, and another logical light face is coated with the high saturating deielectric-coating of 589nm.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and modification according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. laser type I phase matching non-linear and device frequently comprise:
One provides output light wavelength is the fundamental frequency light source (1) of 1064nm laser;
A frequency-doubling crystal (2);
One and frequency crystal (4);
An Amici prism (5); It is characterized in that, comprise that also one can make the polarization direction of residue fundamental frequency light and frequency doubled light become parallel gyrotropi crystal (3) by quadrature; Place described frequency-doubling crystal (2), described gyrotropi crystal (3) and described and frequency crystal (4) on wherein said fundamental frequency light source (1) output light path successively in proper order, and on described and frequency crystal (4) output light path, place described Amici prism (5) by Brewster angle; Described frequency-doubling crystal (2), gyrotropi crystal (3) and frequency crystal (4) and Amici prism (5) all are fixed on the optics tool seat, and optics tool seat is fixed on the optical table.
Described gyrotropi crystal is quartzy gyrotropi crystal, and for z cuts, optical direction is the z direction of principal axis, the anti-reflection film of logical light mirror polish and plating respective wavelength, and logical light face thickness is determined by following formula:
Described gyrotropi crystal to the angle that vibration plane turned over of a certain monochromatic linearly polarized light is
It is proportional to light in medium the length l by distance, promptly
α is the specific rotatory power of gyrotropi crystal in the formula, is the function of wavelength.
2. by described laser type I phase matching non-linear of claim 1 and frequency device, it is characterized in that: described quartzy gyrotropi crystal is that frequency doubled light wavelength and 2 λ are the long laser of fundamental light wave for λ, satisfy following relation:
α is the specific rotatory power of quartzy gyrotropi crystal in the formula, is the function of wavelength; L is logical light length, and α (2 λ) is the specific rotatory power of fundamental frequency light, and α (λ) is the specific rotatory power of frequency doubled light,
Be the deflection anglec of rotation of the quartzy gyrotropi crystal of process of fundamental frequency light,
It is the deflection anglec of rotation of the quartzy gyrotropi crystal of process of frequency doubled light.
3. by described laser type I phase matching non-linear of claim 2 and frequency device, it is characterized in that: described gyrotropi crystal specific rotatory power adopts following formula to fit and obtains:
A in the formula, b, c, d, e, f, g, h is a fitting constant, is respectively: a is a constant term, and b is the quadratic term coefficient, and c is negative quadratic term coefficient, and d is a coefficient once, and e is negative quadratic term constant, and f is the cubic term coefficient, and g is a negative once coefficient, h is negative once item constant; λ is an optical maser wavelength
c
lBe the light velocity in the vacuum, ω is a laser frequency;
The gained parameter value:
a＝2.0319
b＝20.642
c＝5.9098
d＝-17.472
e＝0.016705
f＝-7.29
g＝2.9355
h＝0.13832
By the principle of least square:
Described formula (1) is used for any two laser wavelength lambda
1, λ
2Laser polarization direction rotation differ arbitrarily angled β, obtain the specific rotatory power α (λ of two wavelength according to formula (2)
1), α (λ
2), by formula (1) calculates required crystal thickness
4. by described laser type I phase matching non-linear of claim 1 and frequency device, it is characterized in that: also comprise first lens (6) and second lens (7); Described first lens (6) are arranged on the light path between described fundamental frequency light source and the described frequency-doubling crystal; Described second lens (7) are arranged on the light path between described gyrotropi crystal and the described frequency-doubling crystal; Described first lens (6) and second lens (7) are planoconvex lens, dispersion compensation lens, or the lens of other type and optics.
5. by claim 1 or 2 described laser type I phase matching non-linears and frequency device, it is characterized in that: described Amici prism (5) is Brewster angle prism, right-angle prism or isosceles prism.
6. by claim 1 or 2 described laser type I phase matching non-linears and frequency device, it is characterized in that: described fundamental frequency light source (1) is to mix Nd laser or Yb laser, described laser is continuous wave laser, Q-switched laser or lock film laser, and the pulse duration of described fundamental frequency light source (1) is millisecond, microsecond, nanosecond, psec or femtosecond.
7. by claim 1 or 4 described laser type I phase matching non-linears and frequency device, it is characterized in that: described frequency-doubling crystal (2) comprising: fluoridize aluminium borate barium, three lithium borates, barium metaborate, potassium niobate, titanyl potassium phosphate, periodic polarized metatitanic acid potassium phosphate, periodically poled lithium niobate, period polarized lithium tantalate or other nonlinear optical crystal and optical superlattice crystal.
8. by claim 1 or 4 described laser type I phase matching non-linears and frequency device, it is characterized in that: described and frequency crystal (4) comprising: fluoridize aluminium borate barium, three lithium borates or other nonlinear optical crystal and optical superlattice crystal.
9. by claim 1 or 4 described laser type I phase matching non-linears and frequency device, it is characterized in that: described Amici prism (5) is Brewster angle prism or other prisms.
10. by claim 1 or 4 described laser type I phase matching non-linears and device frequently, it is characterized in that: described gyrotropi crystal (3) be shaped as cylindric disc, cuboid, six prisms or triangular prism.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111913332A (en) * | 2020-08-17 | 2020-11-10 | 江苏博创翰林光电高科技有限公司 | Second harmonic bandwidth compression method |
| CN112260042A (en) * | 2020-09-14 | 2021-01-22 | 深圳联品激光技术有限公司 | Ultraviolet pulse laser |
| CN112269260A (en) * | 2020-09-27 | 2021-01-26 | 北京卓镭激光技术有限公司 | Laser switching device and method |
-
2008
- 2008-04-30 CN CN2008101056899A patent/CN101572382B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111913332A (en) * | 2020-08-17 | 2020-11-10 | 江苏博创翰林光电高科技有限公司 | Second harmonic bandwidth compression method |
| CN112260042A (en) * | 2020-09-14 | 2021-01-22 | 深圳联品激光技术有限公司 | Ultraviolet pulse laser |
| CN112260042B (en) * | 2020-09-14 | 2022-01-25 | 深圳联品激光技术有限公司 | Ultraviolet pulse laser |
| CN112269260A (en) * | 2020-09-27 | 2021-01-26 | 北京卓镭激光技术有限公司 | Laser switching device and method |
| CN112269260B (en) * | 2020-09-27 | 2023-03-21 | 北京卓镭激光技术有限公司 | Laser switching device and method |
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| CN101572382B (en) | 2011-02-09 |
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