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Updated: Jun 3, 2026

Direct Imaging of Laser-driven Ultrafast Molecular Rotation
Published on: February 4, 2017
Single-cycle mid-infrared pulses with 30 μJ at 100 kHz via post-compression in solid-state media
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We demonstrate a 3.2 µm mid-infrared source delivering 30 µJ, single-cycle pulses via two-stage bulk post-compression of a 10 W four-cycle OPCPA. By optimizing a tandem configuration of BaF2 and Si, we achieved a compressed pulse duration of 11 fs with a CEP stability of 145 mrad RMS. The output exhibited high spatio-spectral uniformity with small residual spatial and angular chirp. The reliability and long-term stability of the system are tested. Additionally, high-order harmonics were generated in ZnO with locked CEP. The demonstrated performance is ideal for strong-field and attosecond-science applications.
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