Exam (elaborations)
LASER HAIR REMOVAL QUESTIONS AND ANSWERS
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LASER HAIR REMOVAL QUESTIONS AND ANSWERS
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LASER HAIR REMOVAL QUESTIONS AND ANSWERSWhat does LASER stand for? - Answers-Light amplification by stimulated emission of
radiation
Range of visible light - Answers-400-700nm
What are actinic rays - Answers-Damaging rays that come from the sun
What is GnRH? - Answers-Gonadotropin Releasing Hormone, the hormone produced
and released by the hypothalamus. GnRH controls the pituitary glands production and
release of gonadotropins.
What are Photons? - Answers-Small parcels of energy
Examples of lasers and used in hair removal and their wavelengths - Answers-Nd: YAG
1064nm
Diode 800nm
Alexandrite 755nm
Ruby 694 nm
The amount of energy carried by photons is relative to their wavelength - the shorter the
wavelength, the greater the energy.
TRUE OR FALSE? - Answers-TRUE
What is the wavelength of red light? - Answers-700nm
What is the wavelength of Violet light? - Answers-400nm
Fluence - Answers-Energy density. The energy expressed in joules of a laser pulse
divided by the area of the beam in cm2
repetition rate - Answers-Is the number of pulses per second measured in Hz
Pulse duration - Answers-Is the length of each pulse measured in milliseconds (ms)
Pulse - Answers-A discontinuous burst of laser output as opposed to a continuous
beam. A true pulse achieves higher higher peak powers than that attainable in a
continuous wave output.
Define Monochromatic - Answers-Consists of photons of a single wavelength or a very
narrow band of wavelengths.
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