Fig. 2: Principle of Phase Diversity Electro-optic Sampling, DEOS, for single-shot recording of THz electric fields.
From: Phase Diversity Electro-optic Sampling: A new approach to single-shot terahertz waveform recording
a Experimental design: The input THz field evolution modulates a chirped laser pulse, and the DEOS design provides two outputs that contain different information. Using this two-output design (see Table 1 for details), the recorded information is sufficient for removing the problem, i.e., retrieving the input signal with high resolution. b−d Main steps of our reconstruction method (numerical simulation). b Raw electro-optic sampling (EO) signals (optical spectra after background subtraction and normalization). c Transfer functions H1 and H2 corresponding to the two polarization outputs showing the phase diversity operation. d Input signal retrieved from the recorded OSA signals [displayed in (b)] and the transfer functions H1,2(Ω) [displayed in (c)], using the MRC algorithm (Eq. 10). Laser parameters close to those of the European XFEL experiment presented hereafter (1040 nm wavelength and 40 nm FWHM bandwidth, τw = 5 ps FWHM).
