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CW single probe 500mW example<br />
If we assume that the laser beam emanates<br />
directly from the outlet with a diameter of<br />
1 mm² (beam size) in the CW single probe,<br />
then the power density at maximum power<br />
is 500 mW / mm².<br />
If we now assume that the irradiated surface<br />
area is 1 cm 2 , the power density is only<br />
0.005 W / cm 2 .<br />
General formulae<br />
Power density<br />
(W / cm 2 )<br />
Pre-set values<br />
Power output = 500 mW<br />
= average power<br />
output / beam size<br />
Calculation of power density on 1 cm²<br />
Power density<br />
(W / cm 2 )<br />
= 500 mW / mm 2<br />
= 0.5 W / 0,01 cm 2<br />
= 0.005 W / cm 2<br />
The CW single probe 500mW<br />
If you want to irradiate this 1 cm 2 surface<br />
area with 4 Joule of energy, you will need<br />
13 minutes and 20 seconds of treatment<br />
time.<br />
General formulae<br />
Energy density<br />
(J / cm 2 )<br />
Pre-set values<br />
Power output = 500 mW<br />
= power density x time<br />
Energy = 4 J<br />
(treatment time)<br />
Calculation of treatment time on 1 cm²<br />
T = energy density / power density<br />
= 4 J / cm 2 / 0.005 W /cm 2<br />
= 800 s<br />
= 13 minutes + 20 seconds<br />
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