Page 115 - Chapter 3 - Fundamentals of Laser/IPL Hair Removal
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Chapter 3 – Fundamentals of Laser/IPL Hair Removal 1st Edition
monochromacity – but even this will change if the scattering events are inelastic (losing energy making the photons ‘redder’).
So, it could be argued that ‘laser’ light stops being ‘laser’ when it starts to scatter! It then resembles ordinary light except that it is a single wavelength (colour)...
IPL Light Energy – How Much Actually Reaches the Skin?
IPL systems are fairly simple devices, but they differ significantly from lasers in the way light is both generated and transmitted to the skin surface. The light in any IPL comes from a flashlamp which is excited by an applied voltage. This usually generates a wide range of wavelengths, typically from about 350 to 1400nm. Some of these wavelengths are of no interest to us, so we use filters to block their passage to the skin.
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Conclusions
In this Chapter on laser/IPL hair removal we have discussed some of the basics behind:
Laser/IPL parameters Different technologies Treatment timings
Stamping vs SHR/In-motion techniques Selective Photothermlysis Tissue denaturation
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