Abstract
Abstract We present data on the linear and nonlinear optical properties of the quaternary semiconductor AgGaGeS 4 having orthorhombic symmetry––a solid solution in the system Ag x Ga x Ge 1− x S 2 with x =0.5. After numerical analysis of the phase-matching configurations for three-wave nonlinear interactions, first experimental results on optical parametric amplification producing tunable (3.8–11 μm) femtosecond idler pulses are described and the results compared with the calculations. Due to its higher damage threshold and greater variety of phase-matching schemes AgGaGeS 4 could become an alternative to the widely spread now AgGaS 2 in high power and specific applications.
Published Version
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