1|Page
Laser Hair Removal Exam Questions
Complete Answers New Update (100+
Verified A+)
what does the word LASER stand for? - ✔✔light amplification stimulated emission of radiation
what are the four characteristics of a wave? - ✔✔wavelength, frequency, velocity, amplitude
wavelength - ✔✔distance between 2 peaks of the wave measured in nanometers
frequency - ✔✔number of wave cycles per second; measured in hertz
velocity - ✔✔speed of light
amplitude - ✔✔height of the wave
what is the common standard of measure used for a wavelength? - ✔✔nanometers
explain the correlation between the wavelength, energy, frequency, amplitude, and penetration to the
surface - ✔✔-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) - ✔✔400-780nm
what are actinic rays? - ✔✔damaging rays that come from the sun
what wavelengths are considered to be actinic? - ✔✔0-400nm
what wavelengths for IR light? - ✔✔780-10,000
Katelyn Whitman© 2025, All Rights Reserved.
,2|Page
what is spontaneous emission? - ✔✔process of energy absorption by electrons and emitting
spontaneously
what are the components of laser? - ✔✔active medium, excitation mechanism, feedback mirrors, laser
output
what are 3 unique characteristics of the laser light? - ✔✔1) monochromatic
2) coherant
3) collimated
coherence - ✔✔wave patterns are locked in one phase (up and down together)
collimation - ✔✔laser that creates a light beam that stays together as a tight beam of light over long
distance without diverging
monochromaticity - ✔✔-one wavelength/color,
-same wavelength number, color
who were 3 people developing the theory of LASER? - ✔✔-albert einstein
-charlers townes
-arthur shawlow
who invented the first laser and when? - ✔✔-theodore maiman
-1960
in the visible spectrum, what is the color? - ✔✔wavelength
give the order of colors in the visible spectrum - ✔✔violet, indigo, blue, green, yellow, orange, red
what is active medium of a laser? - ✔✔substance that creates the laser light
Katelyn Whitman© 2025, All Rights Reserved.
, 3|Page
what types of active medium are commonly used? - ✔✔solid, liquid, gas, electronic
what is the energy source of a LASER? - ✔✔stimulates active medium
types of the energy sources used in different lasers - ✔✔direct current, radio frequency, optical
(flashlight), other lasers
what conditions do we use lasers in esthetics for? - ✔✔-hair reducation
-hyperpigmentation
-skin rejuvenation
-spider veins
-stretch marks
-telangiectasia
-capillaries
-melasma
-tattoo removal
-acne
-laser lipo
what is the definition of chromophore? - ✔✔substance that absorbs the laser light
what chromophore do we target in hair reduction? - ✔✔melanin
what chromophore do we target in capillaries? - ✔✔oxyhemoglobin
what chromophore do we target in hyper pigmentation? - ✔✔melanin
what chromophore do we target in skin rejuvenation? - ✔✔water
Katelyn Whitman© 2025, All Rights Reserved.
Laser Hair Removal Exam Questions
Complete Answers New Update (100+
Verified A+)
what does the word LASER stand for? - ✔✔light amplification stimulated emission of radiation
what are the four characteristics of a wave? - ✔✔wavelength, frequency, velocity, amplitude
wavelength - ✔✔distance between 2 peaks of the wave measured in nanometers
frequency - ✔✔number of wave cycles per second; measured in hertz
velocity - ✔✔speed of light
amplitude - ✔✔height of the wave
what is the common standard of measure used for a wavelength? - ✔✔nanometers
explain the correlation between the wavelength, energy, frequency, amplitude, and penetration to the
surface - ✔✔-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) - ✔✔400-780nm
what are actinic rays? - ✔✔damaging rays that come from the sun
what wavelengths are considered to be actinic? - ✔✔0-400nm
what wavelengths for IR light? - ✔✔780-10,000
Katelyn Whitman© 2025, All Rights Reserved.
,2|Page
what is spontaneous emission? - ✔✔process of energy absorption by electrons and emitting
spontaneously
what are the components of laser? - ✔✔active medium, excitation mechanism, feedback mirrors, laser
output
what are 3 unique characteristics of the laser light? - ✔✔1) monochromatic
2) coherant
3) collimated
coherence - ✔✔wave patterns are locked in one phase (up and down together)
collimation - ✔✔laser that creates a light beam that stays together as a tight beam of light over long
distance without diverging
monochromaticity - ✔✔-one wavelength/color,
-same wavelength number, color
who were 3 people developing the theory of LASER? - ✔✔-albert einstein
-charlers townes
-arthur shawlow
who invented the first laser and when? - ✔✔-theodore maiman
-1960
in the visible spectrum, what is the color? - ✔✔wavelength
give the order of colors in the visible spectrum - ✔✔violet, indigo, blue, green, yellow, orange, red
what is active medium of a laser? - ✔✔substance that creates the laser light
Katelyn Whitman© 2025, All Rights Reserved.
, 3|Page
what types of active medium are commonly used? - ✔✔solid, liquid, gas, electronic
what is the energy source of a LASER? - ✔✔stimulates active medium
types of the energy sources used in different lasers - ✔✔direct current, radio frequency, optical
(flashlight), other lasers
what conditions do we use lasers in esthetics for? - ✔✔-hair reducation
-hyperpigmentation
-skin rejuvenation
-spider veins
-stretch marks
-telangiectasia
-capillaries
-melasma
-tattoo removal
-acne
-laser lipo
what is the definition of chromophore? - ✔✔substance that absorbs the laser light
what chromophore do we target in hair reduction? - ✔✔melanin
what chromophore do we target in capillaries? - ✔✔oxyhemoglobin
what chromophore do we target in hyper pigmentation? - ✔✔melanin
what chromophore do we target in skin rejuvenation? - ✔✔water
Katelyn Whitman© 2025, All Rights Reserved.
