Fig. 6.

Ethnic differences in energy deposition $S$ profiles on the depth $z$ axis ($x=y=0\mathrm{mm}$) at the wavelengths of (a) 500, (b) 700, and (c) 900 nm. The broken lines at 0.15 and 1.65 mm show the boundaries between the epidermis and the dermis and between the dermis and the subcutaneous fat, respectively.