Page 133 - An Introduction to Laser Tattoo Removal

Dermis Divergence
Duty Cycle
Electromagnetic Spectrum
Energy
Energy Density
Energy Source Erythema
Failsafe Interlock
Flashlamp Focal Length Focal Point Frequency
Tissue which lies under the epidermis. It contains blood vessels, lymph vessels, nerves and consists of a collagen, elastin and reticulin matrix. Most tattoo pigment is found in the dermis.
The increase in the diameter of the laser beam with distance from the exit aperture. The value gives the full angle at the point where the laser radiant exposure or irradiance is 1/e or 1/e2 of the maximum value, depending upon which criteria is used.
Ratio of total "on" duration to total exposure duration for a repetitively pulsed laser.
The range of frequencies and wavelengths emitted by atomic systems. The total spectrum includes radio waves as well as short cosmic rays. Frequencies cover a range from 1 Hz to perhaps as high as 1020 Hz.
The laser light generated by a light energy source measured in joules. This energy generates heat when absorbed by tissue or pigment which induces the desired reaction. See more here...
Also known as ‘Fluence’ or ‘Radiant Exposure’. The ED is the amount of light energy found in the impact area on the tissue. It is found by measuring the energy (at the skin/tissue surface) and measuring the area of the spot, then dividing the energy by this area. See more here... PDF link
High voltage electricity, radio waves, flashes of light, or another laser used to excite the laser medium.
Erythema is the medical term given to ‘reddening’ of the skin. This is a standard reaction of the skin to external stimulus. It indicates that the superficial blood vessels have expanded to increase the flow of nutrients and white cells to areas where injury or damage may have occurred.
An interlock where the failure of a single mechanical or electrical component of the interlock will cause the system to go into, or remain in, a safe mode.
A tube typically filled with krypton or xenon. Produces a high intensity, multi-wavelength light in short duration pulses.
Distance between the centre of a lens and the point on the optical axis to which parallel rays of light are converged by the laser.
That distance from the focusing lens where the laser beam has the smallest diameter.
The number of light waves passing a fixed point in a given unit of time, or the number of complete vibrations in that period of time.
Chapter 2 – Fundamentals of Laser Tattoo Removal v1.0
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Chapter 2 LEVEL A Laser Tattoo Removal
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