Figure 4
From: Strong Optomechanical Coupling in Nanobeam Cavities based on Hetero Optomechanical Crystals

(a) The absolute value of electric y-component (|Ey|) of the optical mode. (b) The absolute value of strain yy-component (|Syy|) of the mechanical mode. For the sake of clarity, only the fields in the central part are shown, since the fields outside the central part are negligibly small.