Non -linear crystal used during wavelength conversion
Tours Co., Ltd.
About This Product
Crystals used during wavelength conversion
Make twice the frequency of the original light (multi -wave) and half the wavelength. Example YAG laser crystal 1,064 nm → Noneline crystal 532nm.
・ SHG (second harmonics) = 1/2 wavelength.
・ THG (Third Heak) = 1/3 of the wavelength.
・ FHG (fourth harmonic wave) = 1/4 of the wavelength.
・ SFG (Japanese frequency) = 2 low power light into one high -powered light. 1,064+532 = 355nm
・ OPO (optical parametric oscillation) = 1 high power light is made into two low -powered light.
Low power light = signal light+idola light
355 = 532+1,064nm
・ OPA (optical parametric amplification) = two high -powered light are used to one low power light.
Signal Light-Pump Light = Idora Hikari
532-810nm = 1,550nm
This process is called OPA that the idola light is amplified by calling a difference frequency (DFG).
* "+" And "-" are not simple addition.
■ Wavelength conversion and phase consistency
For wavelength conversion, phase is consistent using the refractive index of crystals with a nonlinear optical effect (multiple flexibility). Phase consolidation is a method of adjusting the refraction by changing the incident angle using a different refractive index, which is different from the crystal axis of the multiple flexion crystals. There are Type I and TypeⅡ for phase consistency.
・ Typeⅰ = Polarization of incident light is parallel.
・ TypeⅡ = Polarization of incident light is vertical.
As a method to determine the phase consistency angle
・ CPM (fixing phase phase) = Method of matching the angle of the crystal axis to the optical axis of incident light
・ NCPM (non -clinical phase phase consistency) = Method to adjust the refractive index by temperature adjustment (to 0 ° Walkoff angle)
NCPM requires a budget because it uses equipment such as an oven, but the walk -off angle (gap) is 0 degrees, so there is no limit on the crystal size. BBO cannot do temperature adjustment methods.
■ Simple explanation about the size determination of nonlinear crystals:
The size determination is determined according to the quality of the incident beam. Generally, the longer the crystal length, the better the conversion efficiency. However, it is necessary to have a condition that the quality of the incident light is also good. If the incident light is good and the output density is sufficient, even a fairly short crystal can obtain good conversion efficiency.
For example, when L = 8mm crystals can get 30%conversion efficiency, L = 10mm is around 32%of conversion efficiency. However, the longer it gets, the higher the amount. The amount of 1mm or less will increase the amount as technical processing costs. In addition to the above, it is simply determined by the effective diameter according to the beam diameter.
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Product
Non -linear crystal used during wavelength conversion
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Handling Company
Tours Co., Ltd.
5 Models of Non -linear crystal used during wavelength conversion
Items marked with have different values depending on the model number.
Click on the part number for more information about each product
| Product Image | Part Number | Price (excluding tax) | Absorption coefficient | Absorption loss %/cm@1,064nm | Absorption loss %/cm@1,533nm | Absorption loss %/cm@3,475nm | Angle acceptance | Average refractive index | Crystal lattice constant | Crystal structure | Damage threshold | Electrical optical constant (low frequency) | Heat expansion coefficient | Hot light coefficient (℃, λin μm) | Melting point | Moisture absorption | Morse hardness | Nonlinear coefficient | Nonlinque unpleasant loss | Permeation range | Phase consistent angle NM | Reflecting index (n) | SHG 1,064/532nm | SHG position consistency range | Selmyer equation (λ in μm) | Spectrum reception | Temperature acceptance | Thermal conductivity w/m/k | Walk -off angle | Wavelength transmission range | density | wavelength |
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LBO nonlinear crystal-lithium soric acid |
Available upon quote |
<0.1%/cm@1,064nm <0.3 %/cm@532nm |
- | - | - |
6.54mrad · cm (φ, typei, 1,064SHG) 15.27mrad · cm (θ, typeⅡ, 1,064SHG) |
- |
a = 8.4473 b = 7.3788 c = 5.1395 |
Horny crystal |
> 10GW/cm²@10ns, 10Hz, 1,064nm/polishing only > 1GW/CM²@10ns, 10Hz, 1,064nm/AR coated > 500mw/cm²@10ns, 10Hz, 532nm/AR coated |
- |
αX = 10.8x10⁻⁵/k, αY = -8.8x10⁻⁵/k, αZ = 3.4x10⁻⁵ |
DNX/DT = -9.3x10⁻⁶ DNY/DT = -13.6x10⁻⁶ DNZ/DT = (-6.3 ~ 2.1λ) x10⁻⁶ |
Approximately 834 ° C | Existence | 6 |
Deff (i) = d₃₃cosφ (Typei XY parallel) DEFF (i) = d₃₁cos²θ+d₃sin²θ (Typei xz parallel) DEFF (Ⅱ) = d₃₁cos²θ (TypeⅡ yz parallel) DEFF (Ⅱ) = d₃₁cos²θ+d₃sin²θ (TypeⅡ xz parallel) |
D₃₁ = 1.05 ± 0.09pm/v d₃ = 0.98 ± 0.09 pm/v D₃₃ = 0.05 ± 0.006pm/v |
- | - | - | - |
551-2,600nm (TypeⅠ) 790 ~ 2,150nm (TypeⅡ) |
NX² = 2.454140+0.011249/ (λ ²-0.011350) -0.014591λ 6.60 × 10⁻⁵ 10⁻⁵ ⁴ ⁴ NY² = 2.539070+0.012711/ (λ ²-0.012523) -0.018540λ 2.00 x 10⁻⁵ 10⁻⁵ ⁴⁴ NZ² = 2.586179+0.013099/ (λ-0.011893) -0.017968λ-2.26 × 10⁻⁵ ⁻⁵⁴ |
1.0nm / CM (Type I, 1,064SHG) 1.3nm / CM (TypeⅡ, 1,064SHG) |
4.7 ° C / CM (TypeⅠ, 1,064SHG) 7.5 ° C / CM (TypeⅡ, 1,064SHG) |
3.5W/m/k |
0.6 ° (TypeⅠ, 1,064SHG) 0.12 ° (TypeⅡ, 1,064SHG) |
160 ~ 2,600Nm * 190Nm or less has a weak output and cannot be used. |
2.47g/cm³ | - |
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BBO nonlinear crystal-Bab2O4 |
Available upon quote | - | - | - | - | - | - | - | - |
> 500mw/cm²@10ns, 10Hz, 1064nm/AR coated > 1gw/cm²@10ns, 10Hz, 1,064nm/polishing only |
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
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KTP nonlinear crystal-ktiopo4 |
Available upon quote | - | - | - | - | - | - | - | - | > 450mw/cm²@10ns, 10Hz, 1,064nm | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
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KTA nonlinear crystal-ktioaso4 |
Available upon quote | - | <0.05 | <0.05 | <5 | - | 1.8 |
A = 13.125 b = 6.5716 c = 10.786 |
Horny crystal | > 300mw/cm²@10ns, 10Hz, 1,064nm |
R₃₃ = 37.5 PM/V R₃₃ = 15.4 PM/V r₁₃ = 11.5pm/v |
- | - | 1,130 ° C | none | 3 |
D15 = 2.3 D24 = 3.2 D31 = 2.8 D32 = 4.2 D33 = 16.2 |
- | 0.35 ~ 5.5UM | 1,075 ~ 1,134nm |
@1064um NX = 1.782 NY = 1.790 NZ = 1.868 |
- | - | - | - | - |
K1 = 18 K2 = 19 K3 = 21 |
- | - | 3.454g/cm³ |
Pump Hikari: 1,064nm Signal: 1,533nm Idora: 3,475nm |
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BIBO Noneline Crystal-Boric acid |
Available upon quote |
1064nm <0.1%/cm |
- | - | - | - | - |
A = 7.116å, b = 4.993å, C = 6.508å β = 105.62 °, z = 2 |
Single slope (point group 2) | - | - |
αA = 4.8x10⁻⁵/K αB = 4.4x10⁻⁶/K αC = 2.69x10⁻⁵/K |
- | Approximately 726 ° C | none | 5.5 |
d₁₁ = d₁₄ = 2.3 d₅₅ = d₃₆ = 2.4 D₁₁ = 2.53 d₁₃ = -1.3 d₃₅ = -0.9 D₆₆ = 2.8 |
- | - | - |
10,600nm: No = 2.5912 NE = 2.5579 1,064nm: No = 2.7010 NE = 2.7010 530nm: No = 2.6134 NE = 2.5808 |
Phase combined angle: 168.9 ° (starting from the Z axis closer to Yz) Deff: 3.0 ± 0.1pm/v Reception angle: 2.32ARAD/cm Walk -off angle: 25.6mrad Reception temperature: 2.17 ° C/cm |
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N₁ = 3.6545+0.0511/ (λ² 0.0371) -0.0226λ N₂₂ = 3.0740+0.0323/ (λ² -0.0316) -0.01337λ N₃ = 3.1685+0.0373/ (λ² 0.0346) -0.01750λ |
- | - | - | - | 286 ~ 2,500Nm | 5.033G/cm³ | - |
Click on the part number for more information about each product
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About Company Handling This Product
- Japan
- Since 2016
- 2 employees