title: Counterpropagating frequency mixing with terahertz waves in diamond.
abstract: 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.
authors: Institut National de la Recherche Scientifique-Énergie Matériaux Télécommunications (INRS-EMT), Varennes, Québec, Canada. clerici@emt.inrs.ca
authors: Matteo
authors: M
authors: Clerici
authors: Lucia
authors: L
authors: Caspani
authors: Eleonora
authors: E
authors: Rubino
authors: Marco
authors: M
authors: Peccianti
authors: Marco
authors: M
authors: Cassataro
authors: Alessandro
authors: A
authors: Busacca
authors: Tsuneyuki
authors: T
authors: Ozaki
authors: Daniele
authors: D
authors: Faccio
authors: Roberto
authors: R
authors: Morandotti