Frequently Asked Questions

PPLN crystal is used for nonlinear wavelength conversion processes, such as SHG, SFG, OPO, and other nonlinear processes from Visible to MIR.

The features of PPLN crystal include available wavelength from Visible to MIR, availability for SHG/SFG/DFG nonlinear frequency conversion, uniform periodically poled structure, precision end polishing and coating, and high damage threshold.

The output of any wavelength in the transmittance range can be realized through the design of the periodic structure of PPLN crystal.

PPLN crystal is widely used in laser display, MIR spectroscopy, all-optical wavelength conversion, optical sensing, scientific research and medicine, and environmental monitoring.

MgO doping improves the optical damage threshold and photorefractive threshold of the crystal while maintaining a high nonlinear coefficient. It allows the MgO:PPLN crystal to work more stably at lower temperatures and in the visible light range.

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