Laser Certification Exam 2026 Questions
and Answers
define photobiomodulation - Correct answer-light therapy
this type of laser is used on soft tissue only - Correct answer-argon (diode)
this type of laser is used on all tissues - Correct answer-erbium
variables affecting the outcome of laser interaction - Correct answer-wavelength
target composition
energy transfer
power
interaction time
spot size
basic functions of a laser - Correct answer-ablate
decontaminate
stimulate
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,the ___ of a laser affects its function - Correct answer-wavelength
characteristics of light - Correct answer-travels in a straight lines
travels in waves
carries energy
gives off multiple light rays
LASER - Correct answer-light amplification by stimulated emission of radiation
Frequency - Correct answer-the number of complete wavelengths that pass a point
in a given time
frequency is measured in - Correct answer-Hertz
how does amplitude affect frequency? - Correct answer-the higher the amplitude,
the higher the frequency
diode laser position on electromagnetic spectrum - Correct answer-low infrared
CO2 laser position on electromagnetic spectrum - Correct answer-far infrared
erbium laser position on electromagnetic spectrum - Correct answer-mid infrared
all colors focused together produce - Correct answer-white light
what creates the color of the laser? - Correct answer-the active medium
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, active medium - Correct answer-the source of atoms that undergo excitation in a
laser; can be a gas (CO2, argon), crystal (erbium, YAG, Nd), or semiconductor
(diode)
cones in the eye are responsible for seeing - Correct answer-color
rods in the eye are responsible for - Correct answer-night vision, low light
the amount of light produced depends on - Correct answer-the temperature of the
source
white light - Correct answer-multiple wavelengths
travels in multiple directions
incoherent
laser light - Correct answer-single wavelength
monochromatic
travels in 1 direction
coherent
collimated
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and Answers
define photobiomodulation - Correct answer-light therapy
this type of laser is used on soft tissue only - Correct answer-argon (diode)
this type of laser is used on all tissues - Correct answer-erbium
variables affecting the outcome of laser interaction - Correct answer-wavelength
target composition
energy transfer
power
interaction time
spot size
basic functions of a laser - Correct answer-ablate
decontaminate
stimulate
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,the ___ of a laser affects its function - Correct answer-wavelength
characteristics of light - Correct answer-travels in a straight lines
travels in waves
carries energy
gives off multiple light rays
LASER - Correct answer-light amplification by stimulated emission of radiation
Frequency - Correct answer-the number of complete wavelengths that pass a point
in a given time
frequency is measured in - Correct answer-Hertz
how does amplitude affect frequency? - Correct answer-the higher the amplitude,
the higher the frequency
diode laser position on electromagnetic spectrum - Correct answer-low infrared
CO2 laser position on electromagnetic spectrum - Correct answer-far infrared
erbium laser position on electromagnetic spectrum - Correct answer-mid infrared
all colors focused together produce - Correct answer-white light
what creates the color of the laser? - Correct answer-the active medium
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
, active medium - Correct answer-the source of atoms that undergo excitation in a
laser; can be a gas (CO2, argon), crystal (erbium, YAG, Nd), or semiconductor
(diode)
cones in the eye are responsible for seeing - Correct answer-color
rods in the eye are responsible for - Correct answer-night vision, low light
the amount of light produced depends on - Correct answer-the temperature of the
source
white light - Correct answer-multiple wavelengths
travels in multiple directions
incoherent
laser light - Correct answer-single wavelength
monochromatic
travels in 1 direction
coherent
collimated
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
