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(a) Time-resolved images of laser-induced jets in variation of pulse duration, at a constant pulse energy of 2 µJ and focus depth of 52 µm. Scale bar is 100 µm. (b) Jet front position versus the delay time at different pulse durations. (c) Kinetic energy of hydrogel jets and corresponding conversion efficiency relative to incident pulse energy of 2 µJ at a delay time of 10 µs.
