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. 2016 Mar 10;31:789–809. doi: 10.1007/s10103-016-1914-y

Fig. 2.

Fig. 2

Examples of spatial distribution of irradiance in lasers and LED lights where the highest to lowest irradiance is represented by the rainbow colours, red to violet, respectively, for a 660 nm laser, b 810 nm laser and c 810 nm LED