Figure 2.

Energy density (fluence) versus depth by Monte Carlo simulation on a tissue with a dermis layer (μ_a=0.11cm⁻¹, μ_s'=2.18cm⁻¹ at 800 nm & μ_a=0.13 cm⁻¹, μ_s'=1.65 cm⁻¹ at 1200 nm) and a subcutaneous layer (μ_a=1.07 cm⁻¹, μ_s'=11.6 cm⁻¹ at 800 nm & μ_a=1.06 cm⁻¹, μ_s'=7.91cm⁻¹ at 1200 nm).