Pulse characterization at 1.5 μm using time-resolved optical gating based on dispersive propagation

A review of ptychographic techniques for ultrashort pulse measurement

“…An important variant of TROG was developed by Koumans and Yariv called dispersion propagation (DP) TROG, or DP-TROG [34], [35]. A schematic diagram is shown in Figure 19.…”

“…dispersion propagation TROG (DP-TROG) [34], [35], [67] and detection using very high-speed electronics. In our discussion, we present for the first-time initial experiments demonstrating that TROG using high-speed electronics for detection of the temporal waveform can effectively increase the bandwidth of the measurement electronics by up to 40X while providing single-shot measurement rates up to one megahertz.…”

“…Examples of pulse measurement techniques developed include tomographic methods [22], [23], temporal imaging [24]- [29], time domain interferometry [30]- [32] as well as frequency domain interferometry utilizing electronics detection [33]. Additional techniques were also developed to use parallel or in line filtering methods including Dispersion Propagation Time Resolved Optical Gating (DP-TROG) [34], [35], Multiphoton Intrapulse Interference Phase Scan (MIIPS) [36]- [39], Spectral Phase and Amplitude Retrieval and Compensation (SPARC) [40] and d-scan [41]. (For a more complete and excellent review, see [16].…”

“…However, in this paper, we show that as the speed of electronics have increased to include optically relevant bandwidths (>~ 30 GHz), sonogram pulse measurement techniques may become more common and effective. In addition, there is a little known technique called Dispersion Propagated (DP) TROG which is a method to convert autocorrelations after varying amounts of dispersion is applied, to a sonogram [34], [35], [66], [67].…”

Time-resolved optical gating based on dispersive propagation: a new method to characterize optical pulses

“…As an alternative, one can also add an intensity spectrum constraint to the algorithm. More details on noise reduction and other guidelines for experimentally obtained DP-TROG traces will be discussed in a separate paper [28].…”