2023/07/03 by Siyang Wang, Wang, Siyang, Jieyu Yan +13
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #FOS: Physical sciences #Laser-Matter Interactions and Applications #Optics (physics.optics) #Solid State Laser Technologies
paper · pdf · doi:10.48550/arxiv.2307.01164
openalex publication_date 2023/07/03 · openalex created_date 2023/07/05 · openalex updated_date 2026/08/03
We demonstrate a remarkably effective single-stage compression technique for ultrafast pulses in the visible electromagnetic spectrum using second-harmonic pulses at 515 nmderived from a 1030 nm Yb-based femtosecond regenerative amplifier. By employing an advanced multi-plate scheme, we achieve more than fourfold compression from 180 fs to 40 fs with an extremely high spectral broadening efficiency of over 95%, and a temporal compression efficiency exceeding 75%. In addition, our method leverages a low nonlinearity medium to attain the shortest pulse durations for a single compressor while maintaining a superb spatial beam quality with 97% of the energy confined in the main lobe of the Arie disk. Moreover, our technique enhances the temporal pulse quality at 515 nm without generating substantial femtosecond-to-picosecond pulse pedestals. The resulting intense visible laser pulses with excellent spatio-temporal parameters and high repetition rate of 100 kHz to 1 MHz open up new frontiers for extreme nonlinear optics and ultrabright EUV and X-ray high-harmonic generation using short VIS wavelength.