Fig. 3: The frequency spectrum generated by the SASER

Fig. 3: The output spectrum obtained in the experiments. No signal was observed when the input oscillation voltage wass less than 58 mV. However, an oscillation was observed immediately when the input voltage became higher than 58 mV. The above data was obtained when the input voltage is 58.5 mV, showing a small frequency fluctuation of only 80 mHz.