Figure 2
From: Observation of a half-illuminated mode in an open Penrose cavity
Comparison of observed mode patterns with computed ones. (a) Mode excitation arrangement. The gray shaded region is aluminum and light blue shaded regions correspond to water. (b) Images of the experimentally observed acoustic resonant modes compared with numerically computed ones. The resonant frequencies range from (771.3 ± 0.1) kHz to (1262.3 ± 0.3) kHz and their Q factors vary from 290 ± 30 to 1000 ± 100. Among the observed modes, an HIM is highlighted with red box.
