Cheng, Z., Fürbach, A., Sartania, S., Lenzner, M., Spielmann, C., & Krausz, F. (1999). Amplitude and chirp characterization of high-power laser pulses in the 5-fs regime. Optics Letters, 24(4), 247–249. https://doi.org/10.1364/ol.24.000247
Ultrafast lasers; femtosecunden lasers; High harmonic generation
en
Abstract:
Frequency-resolved optical gating (FROG) based on second-harmonic generation has been demonstrated to be capable of high-fidelity measurement of the electric-field envelope and of the temporal evolution of the instantaneous carrier frequency of 0.1-TW 5-fs pulses without the need for any correction for systematic experimental errors. At a 1-kHz repetition rate, pulse energies of a few microjoules are sufficient for reliable FROG characterization of pulses with durations down to the single-cycle regime. The results obtained reveal that carefully designed hollow-fiber chirped-mirror compressors are able to deliver high-power sub-10-fs pulses with a smooth Gaussianlike leading edge that has an intensity contrast of approximately 10(-2) .
