Introduction

Based on the quasi-phase matching theory (QPM), the nonlinear optical crystal  Lithium Niobate is made into a periodically inverted domain structure, called Periodically Poled Lithium Niobate (PPLN), to compensate for phase mismatch caused by dispersion, so that the effective nonlinear coefficient of the nonlinear optical crystal can be used to the greatest extent and the frequency conversion characteristics of the nonlinear crystal can be greatly improved.

• Excellent grating uniformity
• High conversion efficiency
• Free of Walk-Off Competitive price

The Structure Types of PPLN

    1. Classified by the internal domain structure :

      * Users can custom appropriate PPLN domain structure as their requirements.

    * Users can choose their desired PPLN structure according to the pumped laser power, conversion efficiency, output laser power and size, etc.