Parametric array loudspeakers exploit nonlinear acoustic phenomena to generate highly directional audible sound beams from ultrasonic carriers. This technology relies on the self-demodulation of ...
Mid-infrared optical parametric oscillators (OPOs) utilising BaGa4Se7 crystals represent a significant advance in the field of nonlinear optics. BaGa4Se7, a non-oxide crystal with a wide transparency ...
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