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Due to the fact that periodic polarization does not alter the optical properties of the crystal, PPLN possesses the characteristics of LiNbO3 and has a wide transmittance range (0.4-4.5 μ m).The maximum nonlinear coefficient d33=17.3 pm/V under quasi phase matching is achieved, which has the characteristics of high gain and low loss. It covers the near and mid infrared regions and has a long service life. It can be used for frequency doubling, differential
Product Description
Due to the fact that periodic polarization does not alter the optical properties of the crystal, PPLN possesses the characteristics of LiNbO3 and has a wide transmittance range (0.4-4.5 μ m).The maximum nonlinear coefficient d33=17.3 pm/V under quasi phase matching is achieved, which has the characteristics of high gain and low loss. It covers the near and mid infrared regions and has a long service life. It can be used for frequency doubling, differential frequency, sum frequency, optical parametric oscillation, and optical parametric amplification, etc. Therefore, it is widely used in optical parametric oscillators.
Temperature control must be conducted in use, and the OPO process using PPLN can obtain the light wavelength of 3~4.5 μ m, which can realize the conventional phase matching is difficult to achieve efficient output band, with wide application prospects.
Main Features
Long service life;
Wide light transmission range;
High nonlinear coefficient;
High damage resistance threshold;
Can be used to see the middle and far infrared band;
Can be used for a uniform / multi-cycle / fan-shaped QPM structure;
Hybrid configuration available for up conversion (SHG/SFG) and down conversion (DFG/OPA/OPG/OPO);
Product Parameters
Standard requirements | |
Length | 5 ~ 60mm |
Section | 4X1 ~ 20X20mm2 |
Through the distortion | λ/4 @633nm |
Parallel | <20" |
Side vertical | < 5" |
Finish | 10 – 5 posterior membrane 20 – 10 |
Flatness | λ/8 @632.8nm |
Extinction ratio | 300:1 –500:1 |
Damage threshold | 100MW/cm210ns 1064nm 10Hz (PPLN switch) 200MW/cm210ns 1064nm 10Hz (MgO: PPLN switch) |
Refractive index | ne2=a1+b1f+ (a2+b2f)/{λ2- (a3+b3f)2} +(a4+b4f)/(λ2-a52) -a6λ2 f=(T-24.5)(T+570.82) |
