Time Domain Characteristic of Dual-mode Whispering-gallery Mode Lasers

We studied the time domain characteristic in whispering-gallery mode laser and whispering-gallery Fabry-Perot hybrid laser. In the hybrid cavity laser, mode competition at mode hopping position is intense, and the time domain signals of the competition modes oscillate alternately and complementarily. However, the time domain signals of whispering-gallery mode laser are relatively stable.