Counterpropagating frequency mixing with terahertz waves in diamond

Matteo Clerici, Lucia Caspani, Eleonora Rubino, Marco Peccianti, Marco Cassataro, Alessandro Busacca, Tsuneyuki Ozaki, Daniele Faccio, Roberto Morandotti

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)


Frequency conversion by means of Kerr nonlinearity is one of the most common and exploited nonlinear optical processes in the UV, visible, IR, and mid-IR spectral regions. Here we show that wave mixing of an optical field and a terahertz wave can be achieved in diamond, resulting in the frequency conversion of the terahertz radiation either by sum- or difference-frequency generation. In the latter case, we show that this process is phase matched and most efficient in a counterpropagating geometry.
Original languageEnglish
Pages (from-to)178-180
Number of pages3
JournalOptics Letters
Issue number2
Publication statusPublished - 10 Jan 2013


  • frequency conversion
  • nonlinear optical processes
  • wave mixing
  • terahertz wave
  • terahertz radiation

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