2025-2026 Laser Hair Removal Exam With
Complete Solutions Latest Update
Name what the acronym LASER stands for. - ANSWER light amplification stimulated
emission of radiation
Name 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 standard unit of measure common for a wavelength? ANSWER nanometers
describe the relationship 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 is actinic rays? - ANSWER damaging rays which emanate 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 is the makeup 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 produces a light beam that remains 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 chromophore? - ANS substance that absorbs the laser light
what chromophore we target in hair reduction? - ANS melanin
Complete Solutions Latest Update
Name what the acronym LASER stands for. - ANSWER light amplification stimulated
emission of radiation
Name 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 standard unit of measure common for a wavelength? ANSWER nanometers
describe the relationship 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 is actinic rays? - ANSWER damaging rays which emanate 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 is the makeup 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 produces a light beam that remains 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 chromophore? - ANS substance that absorbs the laser light
what chromophore we target in hair reduction? - ANS melanin
