Page 143 - An Introduction to Laser Tattoo Removal

To calibrate a laser:
By the point outputs and
Chapter 2 – Fundamentals of Laser Tattoo Removal v1.0
Appendix 4 – Calibrating your laser
Most lasers used today need to be calibrated. This means that the energy which is applied to the skin surface is then a known quantity. You might set a particular number on your laser display, say 300 mJ. But that does NOT necessarily mean that 300 mJ is actually delivered to the skin!! And it certainly tells you nothing about the fluence either!
So, you need to check this using a meter and a proper calibration process. We made a short video showing how to calibrate a laser –
It is quite straightforward calibrating a laser, if you have the correct meter. You must use a meter which is designed for the laser in question in terms of both wavelength and applied power. If you use the wrong meter, you will likely destroy the head – an expensive mistake!
1 2 3 4
5 6 7 8
Set the laser to the lowest energy output
Fire the laser energy at some appropriate ‘burn’ paper
Fire a pulse into the meter head and note the measurement Repeat this a number of times (typically three or four is sufficient)
Increase the laser output setting
Repeat steps 2, 3 and 4
Repeat step 5
Repeat step 6
you should have a set of laser inputs with their corresponding a bunch of burn spots.
Average the output energy values to obtain a single value These are your ‘measured output energies’
Measure the spot diameters for each input level Calculate their areas (in cm2, usually)
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Chapter 2 LEVEL A Laser Tattoo Removal
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