Page 130 - Lasers and IPLs in Medical/Aesthetic Applications v1.2
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Watt
Watt/cm2 Wavelength
YAG (Yttrium Aluminium Garnet)
response is about 555 nm (which is green). Read more to see how little we actually perceive...
A unit of power (equivalent to one Joule per second) used to express laser power. It is names after the famous Scottish scientist James Watt.
A unit of intensity or irradiance used in measuring the amount of power per area of absorbing surface, or per area of CW laser beam. See more here...
The wavelength of light determines the colour we see with the eye. Visible light has wavelengths in the range 400 to 700 nanometres, with red light at the top end of this range. Infra-red light is invisible but we feel it as heat. Ultra-violet light is also invisible and caused melanocytes to produce excess melanin – a process known as “tanning”. See more here...
A widely used solid-state crystal which is composed of yttrium and aluminium oxides which is doped with a small amount of rare-earth elements such as neodymium, erbium and holmium. Good to know for pub quizzes!
Chapter 1 – Fundamentals of Medical/Aesthetic Lasers and IPLs v1.2
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Chapter 1 LEVEL A Fundamentals of Lasers/IPLs
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