Applications of non-collinear second harmonic generation in one-dimensional periodically poled crystals

Research output: Contribution to journalArticlepeer-review

Abstract

Whereas the commonly used collinear quasi-phase-matched interaction is usually suitable for phase matching only a single nonlinear process, non-collinear interactions offer rich variety of phase matching possibilities, employing different elements of the nonlinear tensor, and various orders of quasi phase matching. By studying the dependence of the second harmonic process on the angle and the phase matching order in a periodically poled LiNbO3 crystal, we can non-destructively derive the duty cycle of the structure. The obtained duty cycle agrees well with surface scan measurements using an atomic force microscope. Furthermore, by proper selection of the non-collinear angle, we demonstrate simultaneous second harmonic generation of two cross polarized waves.

Original languageEnglish
Pages (from-to)423-426
Number of pages4
JournalOptics Communications
Volume277
Issue number2
DOIs
StatePublished - 15 Sep 2007

Keywords

  • Devices
  • Frequency conversion
  • Multiharmonic generation
  • Nonlinear optics

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