Incoherent-light temporal imaging of high-speed, long-duration microwave signals

We review recent work on incoherent-light temporal imaging of intensity waveforms (e.g., high-speed microwave signals). In a relevant example, we create a temporal pinhole camera to demonstrate temporal magnification (stretching) of microwave waveforms modulated on incoherent light, obtaining a magnification factor of 2.86, with a resolution of ∼50 ps over a temporal aperture of ∼8 ns, totally avoiding the use of chirp-controlled pulsed lasers.