Covesion Guide to PPLN


This Covesion guide to PPLN is aimed at providing some background information about PPLN, from second order nonlinear optics to tips on how to use PPLN.


Principles of nonlinear frequency conversion

  • Second order nonlinear processes
  • Phase Matching

Material properties of Lithium Niobate

  • Second Order Nonlinearity
  • Refractive index
  • Transmission
  • MgO:PPLN vs undoped PPLN
  • Power Handling and Damage Threshold
  • Damage Mechanisms
  • The Photorefractive Effect
  • Green Induced Infrared Absorption

How to use PPLN

  • Crystal length
  • Polarization
  • Focusing and the Optical Arrangement
  • Temperature and Period

Example uses of PPLN

  • Second Harmonic Generation
  • Difference Frequency Generation
  • Optical Parametric Oscillator
  • Sum Frequency Generation

PPLN Calculator, Find the Right Crystal

Laser Source Characteristics

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