PPLN (Periodically Polarized Lithium Niobate) – Nonlinear Crystal – Customized Products
PPLN (Periodically Polarized Lithium Niobate) is an efficient wavelength conversion nonlinear crystal, because periodic polarization does not change the optical properties of the crystal, so PPLN has the characteristics of LiNbO3, wide transmission range (0.4-4.5 μm), meets the maximum nonlinear coefficient d33=17.3 pm/V under quasi-phase matching, has high gain and low loss, covers the near and mid Infrared region, long service life, can be used for frequency doubling, differential frequency, and frequency and optical parametric oscillation and optical parametric amplification, so it is widely used in optical parametric variation oscillator. The OPO process using PPLN can obtain light of 3~4.5 μm wavelength, which can realize the wavelength band that is difficult to achieve efficient output by conventional phase matching, and has a wide application prospect.
Note:
$100 is a deposit, not the final price of the product. Please contact us for price if needed.
Features:
Long service life;
Wide light transmission range;
High nonlinear coefficient;
High damage resistance threshold;
Can be visible to the middle and far infrared band;
Can be used for uniform/multi-period/sector QPM structure;
Can be used for up conversion (SHG/SFG) and down conversion (DFG/OPA/OPG/OPO) mixing configuration
Standard Requirement
| Standard Request | |||
| Length | 5 ~ 60mm | Cross Section | 4X1 ~ 20X20mm2 |
| Wavefront Distortion | λ/4 @ 633nm | Surface Finish | 10-5, after coating20-10 |
| Parallelism | < 20 arc sec. | Flatness | λ/8 @ 633nm |
| Perpendicularity | < 5 arc sec. | Extinction Ratio | 300:1 – 500:1 |
| Damage Threshold | 100MW/cm2 10ns 1064nm 10Hz (PPLN switch) 200MW/cm2 10ns 1064nm 10Hz (MgO:PPLN switch) |
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| Refractive Index | ne2=a1+b1f+ (a2+b2f)/{λ2– (a3+b3f)2} +(a4 +b4f)/(λ2 -a52) -a6λ2 f=(T-24.5)(T+570.82) |
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Sellmeier equation coefficients of PPLN crystals doped with 5% MgO
| Coefficient | Value |
| a1 | 5.756 |
| a2 | 0.0983 |
| a3 | 0.202 |
| a4 | 189.32 |
| a5 | 12.52 |
| a6 | 1.32×10-2 |
| b1 | 2.860×10-6 |
| b2 | 4.7×10-8 |
| b3 | 6.113×10-8 |
| b4 | 1.516×10-4 |
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