The application discloses a device for realizing in-situ measurement of time-domain waveforms of ultrahigh-intensity
laser pulses, which comprises a component to be measured, wherein the component to be measured comprises a
femtosecond laser source, a
beam splitter arranged on one side of the
femtosecond laser source, a mirror component arranged on one side of the
beam splitter, a first focusing lens arranged on one side of the mirror component, a vacuum component arranged on one side of the first focusing lens, a dual-color mirror arranged on one side of the vacuum component, a narrow-band filter arranged on one side of the dual-color mirror, a 10cm focusing lens arranged on one side of the narrow-band filter and a
spectrometer; and a detection component, wherein the detection component comprises a mirror, a second focusing lens arranged on one side of the mirror and a time-
delay device mounted on an electrically-controlled displacement table. According to the application, the limitation of traditional equipment in terms of damage threshold can be broken, only a common
spectrometer is needed to
record optical
frequency domain information, the method is simple, the cost is low and the applicability is wide.