Figure 1
From: Whispering-Gallery Mode Lasing in a Floating GaN Microdisk with a Vertical Slit

Shows the SEM images of the floating GaN microdisks, (a) without and (b) with the slit(in same scale range). Frames (c,d) consist of the corresponding normalized PL and TRPL at an excitation power of 18.4 μW.