Improvement to Sellmeier equation for periodically poled LiNbO3 crystal using mid-infrared difference-frequency generation

  • L. H. Deng
  • , X. M. Gao*
  • , Z. S. Cao
  • , W. D. Chen
  • , Y. Q. Yuan
  • , W. J. Zhang
  • , Z. B. Gong
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

Improvement to the Sellmeier equation for the extraordinary index of periodically poled LiNbO3 crystal (PPLN) is reported. The equation has been improved based on a continuous tunable mid-infrared radiation realizing in a PPLN crystal using difference-frequency-generation (DFG) and quasi-phase-matching (QPM) technique. The improved equation is suitable to estimate the QPM conditions of PPLN crystal for temperatures between 25 °C and 180 °C and mid-infrared wavelengths ranging from 2.8 μm to 4.8 μm.

Original languageEnglish
Pages (from-to)110-114
Number of pages5
JournalOptics Communications
Volume268
Issue number1
DOIs
StatePublished - 1 Dec 2006
Externally publishedYes

Keywords

  • Difference-frequency generation
  • PPLN crystal
  • Sellmeier equation

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