Shaping and Phase Characterization of Ultrashort Pulses in the Mid-Infrared by AOM Shaper-Based D-Scan

Flexible shaping and phase characterization of ultrashort pulses in the mid-infrared (MIR) are still challenging. Particularly phase retrieval by, e.g., dispersion scan (d-scan) [1] is not easily implemented in the MIR. In this work, we demonstrate ultrashort pulse generation, tailoring and phase retrieval in a shaper-assisted setup. D-scan is easily implemented by applying and scanning a dispersive phase with a Germanium acousto-optic modulator (AOM)-shaper, instead of glass wedges and chirped mirrors, which are typically used in the VIS/NIR. With this setup, we can not only characterize the MIR pulse, but virtually imprint any phase on it at the same time.