Research Progress on Multi-Pulse Manipulation Technology for Ultrafast Lasers(Invited)
The increasing demand for advanced applications of ultrafast lasers creates an urgent need to develop techniques for the on-demand manipulation of ultrashort pulses.In dissipative systems,multi-pulse structures,which suffer from composite-balance problems involving the gain/loss and dispersion/nonlinearity,yield versatile ultrafast soliton dynamics.Recent research indicates that various pulse characteristics,including the number of pulses,temporal separation,and relative phase,can be artificially manipulated,which leads to the concept of upgrading the on-demand manipulation of multi-pulse structures.Here,we first introduce the multi-pulse soliton dynamics and real-time spectral monitoring methods.Then,we review the approaches for artificially manipulating multi-pulse structures based on gain control,polarization control,dispersion control,and optomechanical effect.We also discuss their performances and corresponding application perspectives.
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