Laser Hair Removal Exam Questions
and Answers (Already Graded A+)
what does the word LASER stand for? - ANSWER-light amplification stimulated
emission of radiation
what are the four characteristics of a wave? - ANSWER-wavelength, frequency,
velocity, amplitude
wavelength - ANSWER-distance between 2 peaks of the wave measured in nanometers
frequency - ANSWER-number of wave cycles per second; measured in hertz
velocity - ANSWER-speed of light
amplitude - ANSWER-height of the wave
what is the common standard of measure used for a wavelength? - ANSWER-
nanometers
explain the correlation between the wavelength, energy, frequency, amplitude, and
penetration to the surface - ANSWER--shorter waves have more energy, higher
frequency, higher amplitudes, less penetration
-long waves have less energy, less frequency, less amplitudes, more penetration
what is the range for visible light? (nm) - ANSWER-400-780nm
what are actinic rays? - ANSWER-damaging rays that come from the sun
,what wavelengths are considered to be actinic? - ANSWER-0-400nm
what wavelengths for IR light? - ANSWER-780-10,000
what is spontaneous emission? - ANSWER-process of energy absorption by electrons
and emitting spontaneously
what are the components of laser? - ANSWER-active medium, excitation mechanism,
feedback mirrors, laser output
what are 3 unique characteristics of the laser light? - ANSWER-1) monochromatic
2) coherant
3) collimated
coherence - ANSWER-wave patterns are locked in one phase (up and down together)
collimation - ANSWER-laser that creates a light beam that stays together as a tight
beam of light over long distance without diverging
monochromaticity - ANSWER--one wavelength/color,
-same wavelength number, color
who were 3 people developing the theory of LASER? - ANSWER--albert einstein
-charlers townes
-arthur shawlow
who invented the first laser and when? - ANSWER--theodore maiman
-1960
in the visible spectrum, what is the color? - ANSWER-wavelength
, give the order of colors in the visible spectrum - ANSWER-violet, indigo, blue, green,
yellow, orange, red
what is active medium of a laser? - ANSWER-substance that creates the laser light
what types of active medium are commonly used? - ANSWER-solid, liquid, gas,
electronic
what is the energy source of a LASER? - ANSWER-stimulates active medium
types of the energy sources used in different lasers - ANSWER-direct current, radio
frequency, optical (flashlight), other lasers
what conditions do we use lasers in esthetics for? - ANSWER--hair reducation
-hyperpigmentation
-skin rejuvenation
-spider veins
-stretch marks
-telangiectasia
-capillaries
-melasma
-tattoo removal
-acne
-laser lipo
what is the definition of chromophore? - ANSWER-substance that absorbs the laser
light
what chromophore do we target in hair reduction? - ANSWER-melanin
what chromophore do we target in capillaries? - ANSWER-oxyhemoglobin
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