Fig. 4: Monolithic-waveform synthesis in the mid-IR range. | Nature Photonics

Fig. 4: Monolithic-waveform synthesis in the mid-IR range.

From: Single-cycle infrared waveform control

Fig. 4

a, EOS time-domain data for different relative phases Δφ. Constructive interference occurs for a value of 0, whereas the strong modification of the mid-IR waveform for π indicates destructive interference. b, Corresponding intensity envelopes, extracted FWHM pulse durations, number of optical cycles calculated for the spectral centroid and FTL based on the derived spectral intensities. c, Corresponding spectral intensities for different relative phases, as extracted via the Fourier transformation of the time-domain data. Constructive interference occurs for Δφ = 0, whereas the strong spectral dip for Δφ = π indicates destructive interference between the spectrally overlapping components originating from even and odd IPDFG orders. The inset shows the extreme spectra (constructive and destructive) on a linear scale.

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