Fig. 1. Influences of normalized electric field peak value and peak electric field location of HfO₂ layer on LIDT. (a) p polarized light; (b) s polarized light

Fig. 2. (a) Expected thickness errors of photoelectric extremum method and the proposed method; (b) theoretical spectrum and experimental spectra of different monitoring methods (Brewster angle incidence)

Fig. 3. LIDT without and with suturing layer

Fig. 4. (a) Damage probabilities of traditional coating (CON) and gradient interfacial coating (MCEI) tested under 1-on-1 and 300-on-1 modes; (b) damage morphologies of MCEI and CON tested under 1-on-1 mode

Fig. 5. Typical surface morphology of cracked polarizer coating

Fig. 6. Photo of the polarizer coating