Fig. 1. Structure schematics of AAO. (a) Three-dimensional structure; (b) top view; (c) cross-sectional view

Fig. 2. Plasma morphology evolution and electronic temperature test system

Fig. 3. Schematic of experimental setup for reflectivity test

Fig. 4. SEM images of sample surface and cross-section. (a) Cross-section of SP450-200-550; (b) cross-section of SP450-300-550; (c) cross-section of SP450-400-550; (d) surface of SP450-200-550; (e) surface of SP450-300-550; (f) surface of SP450-400-550; (g) polished aluminum sheet

Fig. 5. High speed camera images of laser-induced plasma plume. (a) SP450-200-550; (b) SP450-300-550; (c) SP450-400-550; (d) polished aluminum sheet

Fig. 6. Emission spectra and line intensity as a function of delay time. (a) Emission spectra; (b) line intensity

Fig. 7. Variation of plasma electron temperature as a function of delay time

Fig. 8. Measured and simulated reflectivity of AAO with periodic structure. (a) Schematics of FDTD simulation; (b) measured reflectivity; (c) simulated reflectivity; (d) electric field intensity monitoring maps of y-z cross-section