Sub-300 fs, 0.5 mJ Pulse at 1kHz from Ho:YLF Amplifier and Kagome Pulse Compression (original) (raw)

The paper presents the development of a novel optical amplifier system using a Holmium-doped Yttrium Lithium Fluoride (Ho:YLF) regenerative amplifier, achieving sub-300 fs pulses at 1 kHz with a pulse energy of 0.5 mJ. A key innovation involves Kagome hollow core photonic crystal fibers for pulse compression, demonstrating the capability of producing ultrashort pulses from longer duration seed pulses. Experimental results highlight the efficacy of the setup, aiming at high energy output for applications in mid-IR optical parametric amplification and high harmonic generation.