Generating ultrashort flat-top optical pulses with a fiber-loop time-lens system

Xiao, Haibo; Huang, Chao; Xu, Jianqiu; Tang, Yulong

doi:10.1016/j.ijleo.2019.03.095

Cited by 2 publications

(1 citation statement)

References 22 publications

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“…In parallel with DFT, a time-lens technique also provides a powerful real-time method to measure pulse intensity with a sub-picosecond resolution, which is a temporal analog of a spatial thin lens [240]. The time-lens technique has been employed to study optical rogue waves in integrable turbulence [241], spontaneous breathers in modulation instability [242], and the generation of ultrashort flat-top pulses [243]. Combining DFT with the time-lens technique, dramatic advances in the real-time diagnosis of ultrafast transient soliton dynamics have been achieved.…”

Section: Prospectsmentioning

confidence: 99%

Recent advances in real-time spectrum measurement of soliton dynamics by dispersive Fourier transformation

et al. 2020

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Mode-locking lasers have not only produced huge economic benefits in industrial fields and scientific research, but also provided an excellent platform to study diverse soliton phenomena. However, the real-time characterization of the ultrafast soliton dynamics remains challenging for traditional electronic instruments due to their relatively low response bandwidth and slow scan rate. Consequently, it is urgent for researchers to directly observe these ultrafast evolution processes, rather than just indirectly understand them from numerical simulations or averaged measurement data. Fortunately, dispersive Fourier transformation (DFT) provides a powerful real-time measurement technique to overcome the speed limitations of traditional electronic measurement devices by mapping the frequency spectrum onto the temporal waveform. In this review, the operation principle of DFT is discussed and the recent progress in characterizing the ultrafast transient soliton dynamics of mode-locking lasers is summarized, including soliton explosions, soliton molecules, noise-like pulses, rogue waves, and mode-locking buildup processes.

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