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. 2020 Mar 2;10:3819. doi: 10.1038/s41598-020-60828-3

Figure 4.

Figure 4

(a) Retardance R and principle stress difference Δσ distribution across waveguide, of width w = 20 μm, written with multiscan method at a laser power of 130 mW. x axis shows the distance to the waveguide centre (half width point). (b) Flipped image of (a) along waveguide centre point (i.e. along x = 0 in (a)) where red solid R+ curve and blue dashed R curve indicate left and right sides respectively.