Femtosecond nonlinear interactions in the Langatate LGT: Characterization of a new middle infrared nonlinear crystal

We measured broad tunable spectra between 1.4 and 4.7 μm in the nonlinear crystal La3Ga5.5Ta0.5O14 (LGT). They were generated in the femtosecond regime from phase-matched difference frequency generation and optical parametric amplification.