PPLN Crystal (Periodically Poled Lithium Niobate)
PPLN Crystal (Periodically Poled Lithium Niobate)
Periodically poled lithium niobate (PPLN) is a highly efficient crystal for nonlinear wavelength conversion. It has a wide light transmission range covering the NIR and MIR spectral regions and is used for SHG, SFG, DFG, OPO and other nonlinear processes from the visible to the mid infrared. To meet the needs of modern optics for diverse laser wavelengths, any output wavelength inside the transmission range can be realised by designing the periodic structure. PPLN crystals are widely used in laser display, environmental detection, mid-infrared spectroscopy, all-optical wavelength conversion and optical sensing. MgO doping greatly improves the optical damage threshold and the photorefractive threshold while maintaining a high nonlinear coefficient, and MgO:PPLN works more stably at lower temperature and in the visible range than undoped PPLN.
Key Features
- Available wavelength from visible to mid infrared
- SHG / SFG / DFG nonlinear frequency conversion
- Uniform periodically poled structure
- Precision end polishing and coating
- High damage threshold
- MgO-doped option for a higher photorefractive threshold
- Custom period design for the required output wavelength
Specifications
| Parameter | Specifications |
|---|---|
| Material | Periodically poled lithium niobate (PPLN) |
| Doping Option | MgO:PPLN (magnesium oxide doped) |
| Wavelength Coverage | Visible to mid infrared (custom period design) |
| Nonlinear Processes | SHG, SFG, DFG, OPO |
| Poling | Uniform periodically poled structure |
| End Faces | Precision polished and coated to specification |
| Damage Threshold | High (further improved by MgO doping) |
| Operating Temperature | MgO:PPLN works stably at lower temperature and in the visible range |
| Form | Custom, built to specification |
Applications
- Laser display
- Mid-infrared spectroscopy
- All-optical wavelength conversion
- Optical sensing
- Scientific research and medicine
- Environmental monitoring
Data Sheet: PPLN Crystal (Periodically Poled Lithium Niobate) (PDF)
Period, dimensions and coatings are designed to order - send us your specification for a quotation.
