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Published on: January 28, 2019
Adaptive acousto-optic technique for femtosecond laser pulse shaping
Vladimir Ya Molchanov1, Sergey I Chizhikov, Oleg Yu Makarov
1Acousto-Optical Research Center, Moscow Institute for Steel and Alloys (MISA),Technological University, 4 Leninsky Prospect, 119049 Moscow, Russia. v_molchanov@smtp.ru
Abstract:
We discuss the theoretical and experimental investigation of acousto-optic dispersive tunable filters, based on quasi-collinear geometry of light-sound interaction in a tellurium dioxide single crystal. The geometry uses the effect of strong acoustic anisotropy in the paratellurite as well as peculiarities of acoustic wave reflections at the free boundary of the crystal. A mathematical concept for determination of optical, electrical, and constructional parameters of the filters is developed. Different experimental acousto-optic filters intended for femtosecond pulse shaping are designed and tested. Preliminary experiments are performed in a subpetawatt optical parametric chirped pulse amplification laser system. The experimental data conform completely with the predicted data.
