Page 134 - An Introduction to Laser Tattoo Removal

Helium-Neon Laser (HeNe)
Hertz (Hz)
Near-Infrared Radiation (NIR)
Intensity
Joule (J) Joule/cm2 Laser
Laser Safety Officer (LSO)
Laser Protection Supervisor (LPS)
Light
Maximum Permissible Exposure (MPE)
James Clerk Maxwell
Monochromatic Light
A laser in which the active medium is a mixture of helium and neon. Its wavelength is usually in the visible range. Used widely for alignment, recording, printing, and measuring.
Unit of frequency in the International System of Units (SI), abbreviated Hz; replaces ‘cps’ for cycles per second.
Invisible electromagnetic radiation with wavelengths which lie within the range of 0.7 to 1000 microns.
This also known as ‘Irradiance’ and is a measure of the light power falling on a surface per unit area – the power in a laser spot on the skin/tissue surface. It is measured in Watts/cm2. See more here...
A unit of energy (1 watt-second) used to describe the rate of energy delivery. It is equal to 1 watt-second or 0.239 calorie.
A unit of radiant exposure (energy density or fluence) used in measuring the amount of energy incident upon a unit area.
An acronym for light amplification by stimulated emission of radiation. A laser is a cavity, with mirrors at the ends, filled with material such as crystal, glass, liquid, gas or dye. A device which produces an intense beam of light with the unique properties of coherence, collimation and monochromaticity.
One who has authority to monitor and enforce measures to the control of laser hazards and effect the knowledgeable evaluation and control of laser hazards.
Very similar to LSO (but slightly different!).
The range of electromagnetic radiation frequencies detected by the eye, or the wavelength range from about 400 to around 760 nanometres. The term is sometimes used loosely to include radiation beyond visible limits. See more here...
The level of laser radiation to which a person may be exposed without hazardous effects or adverse biological changes in the eye or skin.
A Scottish genius whose work on the electromagnetic form of light led to many modern inventions. Albert Einstein stated that he could not have derived his work on relativity without Maxwell’s work.
Theoretically, light consisting of just one wavelength. No light is absolutely single frequency since it will have some bandwidth. Lasers provide the narrowest of bandwidths that can be achieved.
Chapter 2 – Fundamentals of Laser Tattoo Removal v1.0
A unit of length in the International System of Units (SI) equal to one billionth of a metre. Abbreviated ‘nm’ - a measure of length. One nm equals 10-9 metre, which is 0.000000001 metres, and is the
Nanometre (nm) ________________________________________________________________________ 134
Chapter 2 LEVEL A Laser Tattoo Removal
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