Publications by authors named "Firas Trawi"
Ytterbium (Yb)-doped materials are an excellent choice for efficient and powerful ultrafast lasers. They exhibit favorable emission properties, which include a low quantum defect and compatibility with cost-effective high-power pump diodes. While being strongly beneficial for efficiency, the low quantum defect is a challenge for operation in the few-cycle regime.
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- - Resonant enhancement in optical cavities boosts the efficiency of nonlinear optical processes, particularly in high harmonic generation for XUV sources, leading to higher repetition rates needed for applications like photoelectron spectroscopy and nuclear clock development.
- - Using mode-locked thin-disk laser oscillators presents a simplified alternative to passive enhancement cavities, achieving comparable driving conditions while being less sensitive to losses due to internal gain, thus improving conversion efficiencies.
- - The intra-oscillator approach outperforms traditional passive cavities in generating XUV flux, producing photon energies between 60 eV and 100 eV at a repetition rate of 17 MHz, and effectively delivering significant power at a desirable wavelength of 13.5 nm, relevant for the silicon industry.