Laser Certification Exam Questions and
Answers
define photobiomodulation - Correct Answers -light therapy
this type of laser is used on soft tissue only - Correct Answers -argon (diode)
this type of laser is used on all tissues - Correct Answers -erbium
variables affecting the outcome of laser interaction - Correct Answers -wavelength
target composition
energy transfer
power
interaction time
spot size
basic functions of a laser - Correct Answers -ablate
decontaminate
stimulate
the ___ of a laser affects its function - Correct Answers -wavelength
characteristics of light - Correct Answers -travels in a straight lines
travels in waves
carries energy
gives off multiple light rays
LASER - Correct Answers -light amplification by stimulated emission of radiation
Frequency - Correct Answers -the number of complete wavelengths that pass a point in
a given time
frequency is measured in - Correct Answers -Hertz
how does amplitude affect frequency? - Correct Answers -the higher the amplitude, the
higher the frequency
diode laser position on electromagnetic spectrum - Correct Answers -low infrared
CO2 laser position on electromagnetic spectrum - Correct Answers -far infrared
, erbium laser position on electromagnetic spectrum - Correct Answers -mid infrared
all colors focused together produce - Correct Answers -white light
what creates the color of the laser? - Correct Answers -the active medium
active medium - Correct Answers -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 Answers -color
rods in the eye are responsible for - Correct Answers -night vision, low light
the amount of light produced depends on - Correct Answers -the temperature of the
source
white light - Correct Answers -multiple wavelengths
travels in multiple directions
incoherent
laser light - Correct Answers -single wavelength
monochromatic
travels in 1 direction
coherent
collimated
stimulated emission - Correct Answers -the process in which an incoming photon
causes an excited atom to drop to a lower energy level, thereby emitting a photon in the
same direction as the incident photon
population inversion - Correct Answers -a necessary condition for laser operation, in
which a collection of atoms are in an excited state than are in lower energy states
components of a laser - Correct Answers -reflective mirror
pumping mechanism
active medium
transmissive mirror
lens
purpose of the reflective mirror - Correct Answers -makes high energy photons
purpose of the pumping mechanism - Correct Answers -the energy source
stimulates photon emission
purpose of the active medium - Correct Answers -collection of atoms that can be
stimulated to a state of inverted population
Answers
define photobiomodulation - Correct Answers -light therapy
this type of laser is used on soft tissue only - Correct Answers -argon (diode)
this type of laser is used on all tissues - Correct Answers -erbium
variables affecting the outcome of laser interaction - Correct Answers -wavelength
target composition
energy transfer
power
interaction time
spot size
basic functions of a laser - Correct Answers -ablate
decontaminate
stimulate
the ___ of a laser affects its function - Correct Answers -wavelength
characteristics of light - Correct Answers -travels in a straight lines
travels in waves
carries energy
gives off multiple light rays
LASER - Correct Answers -light amplification by stimulated emission of radiation
Frequency - Correct Answers -the number of complete wavelengths that pass a point in
a given time
frequency is measured in - Correct Answers -Hertz
how does amplitude affect frequency? - Correct Answers -the higher the amplitude, the
higher the frequency
diode laser position on electromagnetic spectrum - Correct Answers -low infrared
CO2 laser position on electromagnetic spectrum - Correct Answers -far infrared
, erbium laser position on electromagnetic spectrum - Correct Answers -mid infrared
all colors focused together produce - Correct Answers -white light
what creates the color of the laser? - Correct Answers -the active medium
active medium - Correct Answers -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 Answers -color
rods in the eye are responsible for - Correct Answers -night vision, low light
the amount of light produced depends on - Correct Answers -the temperature of the
source
white light - Correct Answers -multiple wavelengths
travels in multiple directions
incoherent
laser light - Correct Answers -single wavelength
monochromatic
travels in 1 direction
coherent
collimated
stimulated emission - Correct Answers -the process in which an incoming photon
causes an excited atom to drop to a lower energy level, thereby emitting a photon in the
same direction as the incident photon
population inversion - Correct Answers -a necessary condition for laser operation, in
which a collection of atoms are in an excited state than are in lower energy states
components of a laser - Correct Answers -reflective mirror
pumping mechanism
active medium
transmissive mirror
lens
purpose of the reflective mirror - Correct Answers -makes high energy photons
purpose of the pumping mechanism - Correct Answers -the energy source
stimulates photon emission
purpose of the active medium - Correct Answers -collection of atoms that can be
stimulated to a state of inverted population
