How Much Can One Compress PHAROS Millijoule-Level Pulses?
Several pulse compression techniques, such as hollow-core fibers, multi-pass cells, and multi-plates have been successfully applied to compress the 1030 nm output of Light Conversion laser sources.
Recently, researchers from National Tsing Hua University have implemented four-level cascaded focus and compression (CASCADE) to achieve a 50-fold compression of millijoule-level pulses from 157 to 3.1 femtoseconds. Moreover, these single-cycle pulses were applied to drive the high harmonic generation, providing isolated attosecond pulses.
The experimental setup starts with one CEP-stabilized Yb-KGW PHAROS laser from Light Conversion, delivering 1.34-mJ pulses at a central wavelength of 1030 nm and at a repetition rate of 4 kHz. The pulse duration was 157 fs, which corresponds to an input peak power of 8.5 GW.
Read more about this research in their article entitled, “Nonlinear compression toward high-energy single-cycle pulses by cascaded focus and compression.”
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