2026-10-14T10:59:53Z https://www.scidb.cn/oai

10.57760/sciencedb.37902 2026-06-01T17:47:25Z

2026-06-01 Experimental Dataset for Efficient Pulse Compression and Frequency Down-Conversion Driven by Circularly Polarized Pulses in an Air-Filled Multi-Pass Cell doi:10.57760/sciencedb.37902 en This dataset is derived from an experimental study on efficient pulse compression and frequency down-conversion driven by circularly polarized femtosecond laser pulses in an air-filled multi-pass cell (MPC). It records the spectral evolution, temporal compression characteristics, frequency down-conversion efficiency, and output beam quality of a driving laser with a central wavelength of 1030 nm and a pulse duration of 800 fs, under varying input pulse energies (up to 688 μJ) and polarization states (linear versus circular). The dataset includes broadened spectra at different input energies, comparison of Raman redshift enhancement and anti-Stokes suppression induced by circular polarization, transform-limited compressed pulse duration (as short as 35 fs), tunable central wavelength range of filtered down-converted pulses (1040–1100 nm), conversion efficiency at 1090 nm (18%), temporal autocorrelation traces of output pulses, beam profile (Gaussian fit), and long-term energy stability (0.31% RMS over 100 minutes). This dataset provides comprehensive experimental support for studying polarization-dependent nonlinear effects in gaseous media, developing compact long-wavelength light sources, and designing drivers for strong-field physics. Multi-pass cell; Circular polarization; Raman-induced frequency down-conversion; Pulse compression; Ultrafast laser hu shi xin PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank