Fig. 1. Experimental setup and results. (a) Schematic of Tm∶GdScO₃ solid-state mode-locked laser; (b) gain cross section spectra with different β values

Fig. 2. SESAM mode-locked Tm∶GdScO₃ crystal laser with transmittance of 1%. (a) Optical spectrum; (b) autocorrelation trace [inset: corresponding long-scale (± 7.5 ps) autocorrelation trace]

Fig. 3. SESAM mode-locked Tm∶GdScO₃ crystal laser with transmittance of 0.5%. (a) Optical spectrum; (b) autocorrelation trace [inset: corresponding long-scale (± 7.5 ps) autocorrelation trace]

Fig. 4. SESAM mode-locked Tm∶GdScO₃ laser. Pulse train on (a) nanosecond and (b) millisecond time scale; radio frequency spectra in the range of (c) 300 kHz and (d) 1 GHz