Exploiting the optical quadratic nonlinearity of zinc-blende semiconductors for guided-wave terahertz generation: A material comparison

Matteo Cherchi, Alberto Taormina, Alessandro C. Busacca, Roberto L. Oliveri, Saverio Bivona, Alfonso C. Cino, Salvatore Stivala, Stefano Riva Sanseverino, Claudio Leone

Research output: Contribution to journalArticleScientificpeer-review

25 Citations (Scopus)

Abstract

We present a detailed analysis and comparison of dielectric waveguides made of CdTe, GaP, GaAs and InP for modal phase matched optical difference frequency generation (DFG) in the terahertz domain. From the form of the DFG equations, we derived the definition of a very general figure of merit (FOM). In turn, this FOM enabled us to compare different configurations, by taking into account linear and nonlinear susceptibility dispersion, terahertz absorption, and a rigorous evaluation of the waveguide modes properties. The most efficient waveguides found with this procedure are predicted to approach the quantum efficiency limit with input optical power in the order of kWs.
Original languageEnglish
Pages (from-to)368-376
Number of pages9
JournalIEEE Journal of Quantum Electronics
Volume46
Issue number3
DOIs
Publication statusPublished - 2010
MoE publication typeA1 Journal article-refereed

Keywords

  • Frequency conversion
  • Optical frequency conversion
  • Optical materials
  • Optical parametric amplifiers
  • Optical phase matching
  • Optical propagation in nonlinear media
  • Optical pulse generation
  • Optical waveguides
  • Semiconductor materials
  • Semiconductor waveguides
  • Terahertz generation

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