Fig. 1. Schematic of coherent synthesis system. HWP, half-wave plate; PBS, polarization beam splitter; SF11 PC, SF11 prism compressor; SPF, short-pass filter; VDL, variable delay line; NDF, neutral density filter; BS, beam splitter.

Fig. 2. Spectral evolution in (a) HNF1 and (b) HNF2, where the white lines are the optimum length of the nonlinear fibers for pulse output, and the red circle indicates the dispersive wave generated in HNF1. The autocorrelation traces of (c) dechirped dispersive wave from HNF1 and (d) dechirped pulses output from HNF2. (e) Measured spectra of pulses output from HNF1 (red), dispersive wave output from HNF2 (blue), and the coherently synthesized pulse (black line).

Fig. 3. (a) Relative intensity noise of pump pulses. (b) Timing jitter spectrum of dispersive wave from HNF1 (red) and pulses from HNF2 (blue), and the gray lines are the noise floors. (c) Integrated RMS timing jitter of dispersive wave from HNF1 (red) and pulses from HNF2 (blue).

Fig. 4. (a) Evolution of the autocorrelator trace with delay between two pulses. (b) Fringe-resolved autocorrelator trace of the synthesized pulses. Inset figure is the intensity of the TL pulse obtained from the synthesized spectrum shown in Fig. 2(e).