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Periodically poled lithium niobate (PPLN) is a highly efficient crystal for nonlinear wavelength conversion processes, which has a wide light transmission range and covers the NIR and MIR Spectral regions. PPLN is used for SHG, SFG, OPO, and other nonlinear processes from visible to MIR.
By designing a periodic structure, output of any wavelength within the transmittance range can be achieved. MgO doping greatly improves the optical damage threshold and photorefractive threshold while maintaining a high nonlinear coefficient. Compared with standard PPLN, MgO:PPLN crystals work more stably at lower temperatures and in the visible light range.
| Nonlinear Interaction | Type | Pump (nm) | Output (nm) | Periods (um) | Temp Range (ºC) | Length (mm) |
|---|---|---|---|---|---|---|
| SHG | PPLN-Bulk-SHG1135 | 1120-1150 | 560-575 | 8.15 - 8.65 | 30-200 | 5-50 |
| SHG | PPLN-Bulk-SHG1560 | 1500-1620 | 750-810 | 18.20 - 20.90 | 30-200 | 5-50 |
| SFG | PPLN-Bulk-SFG633 | 1520-1620 & 1064 | 625-642 | 11.25 - 12.45 | 30-200 | 5-50 |
| DFG | PPLN-Bulk-DFG3800 | 775-870 & 1064 | 2853-4771 | 20.60 - 23.30 | 30-200 | 5-50 |
