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Absorption spectra of (a) composite and (b) PVA.
Raman spectra of (a) flake, (b) composite, and (c) PVA.
Transmittance as a function of peak intensity.
(a) Dispersion-managed fiber laser setup. Laser diode (LD), wavelength division multiplexer (WDM), single mode fiber (SMF), erbium-doped fiber (EDF), isolator (ISO), graphene saturable absorber (GSA), and polarization controller (PC). (b) Dispersion map. EDF and SMF provide positive and negative dispersions.
(a) Optical spectrum with bandwidth . (b) Autocorrelation with fit.
rf spectrum around the fundamental repetition rate with 10 Hz resolution.
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