Fig. 4: Generated linearly chirped microwave waveform (LCMW). | Nature Communications

Fig. 4: Generated linearly chirped microwave waveform (LCMW).

From: Hybrid Fourier-domain mode-locked laser for ultra-wideband linearly chirped microwave waveform generation

Fig. 4

a Temporal waveform of the generated LCMW with a positive chirp rate by beating the frequency-chirped optical pulse with an optical carrier from an LD at a high-speed PD. The zoom-in views of the waveform are shown in (b and c). The blue dots in (c) are the originally recorded data and the red lines are the fitted waveforms. d Spectrogram of the waveform shown in (a). e Compressed pulse by autocorrelation.

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