Where to Buy Periodically Poled Nonlinear Crystals

HC Photonics (HCP) provides various high efficiency nonlinear crystals to enable full-spectrum applications, including periodically poled lithium niobate (LiNbO₃)/PPLN and periodically poled lithium tantalate (LiTaO₃)/PPLT.

Features and service:

• More than 250 commercial off-the-shelf PPMgO:LN bulk crystals for wavelength conversions: QPM pattern: single, multiple, and fan-out; configuration: SHG, SFG, DFG, OPG, OPO, OPA; wavelength range: UV (355 nm) to mid-infrared (5000 nm)
• Custom-made solutions: QPM period: 2–1000 microns; QPM pattern: sngle, multiple, fan-out, chirped, cascade, 2D; dimension: length 0.3–80 mm, width 0.1–40 mm, thickness 0.2–5 mm); configuration: SHG, SFG, DFG, OPG, OPO, OPA, THG, SHG+SFG; wavelength range: UV (355 nm) to mid-infrared (5000 nm) and THz; material: PPMgO:LN or PPMgO:LT
• PPLN waveguides: excellent performance, i.e. >50% overall efficiency. Fibered module >2 W at 780 nm ( 1560 nm SHG) is off-the-shelf. Other wavelengths are also available or could be designed upon request.

Periodically poled lithium niobate: magnesium-doped PPLN is ideal for innovative laser applications due to its high effective nonlinear coefficient; allowing for high efficiency frequency conversion across multiple different mechanisms.

Covesion is a world leader in the design and manufacture of periodically poled lithium niobate for non-linear frequency conversion. MgO:PPLN crystals are available for high efficiency SHG, DFG, SFG and OPO interactions. Wavelength generation coverage runs from visible to mid-IR.

Periodic poling allows for quasi phase matching, which maintains phase relation of the photons throughout the crystal where they would otherwise fall out of phase. This engineered effect leads to a much higher conversion efficiency than would be found in the regular crystal.

Readily available stock crystals and waveguides can be provided on short timescales to rapidly meet your application needs, providing the capability to generate laser light in a wide range of wavelengths.