FINAL EXAM AND PRACTICE QUESTIONS | NEWEST
2025 EXAM COMPLETE QUESTIONS WITH
DETAILED VERIFIED ANSWERS/ ALREADY GRADED
A+
Laser stands for what? - ANSWER✔✔Light
Amplification by
Stimulated
Emission of
Radiation
What is the distance measured in nanometers between two peaks or
two troughs known as? - ANSWER✔✔Wavelength
Light of only one color & one specific wavelength is known as? -
ANSWER✔✔Monochromatic
Refraction is also known as what? - ANSWER✔✔Transmission
The process where by a newly created photon of light (generated
through amplification) acquires energy equal to the photons that
created it is known as? - ANSWER✔✔Stimulated Emission
,The states of equilibrium or middle state of light -
ANSWER✔✔Metastable State
Who theorized stimulated emission? - ANSWER✔✔Albert Einstein
The part of the laser that contains the active medium is called? -
ANSWER✔✔Resinator cavity
What are the states of light in stimulated emission? -
ANSWER✔✔Ground State
Excited State
Singlet State
Metastable State
Alexandrite laer is in the visible light spectrum at what wavelength? -
ANSWER✔✔755 nm
The Nd:YAG laser falls in the invisible light spectrum with a
wavelength of what? - ANSWER✔✔1064 nm
What type of wave is used in laser hair removal? -
ANSWER✔✔Pulsed wave
A chromophore is also know at what? - ANSWER✔✔Target
The chromophore absorbs what? - ANSWER✔✔Energy
,Goggles worn by the patient and practitioner must be approved by
which group? - ANSWER✔✔ANSI (American National Standard
Institute) for Class 3B and Class 4 Lasers
Each laser wavelength is what to its machine? - ANSWER✔✔Specific
What are the parameters when doing laser hair removal? -
ANSWER✔✔Wavelength
Spot Size
Fluence
Pulse Width
Pulsed lasers allow for selective heating of specific targets, this is
also known as? - ANSWER✔✔Selective Photothermolysis
The rate/amount of energy delivered within a given area is known
as? - ANSWER✔✔Fluence
An increase in fluence equals an increase in what? -
ANSWER✔✔Heat. Resulting in more damage
The length of time the light/energy is in contact with the target that is
measured in milliseconds (ms): - ANSWER✔✔Pulse width/Pulse
duration
, If the time of pulse duration is changed from milliseconds to
nanoseconds the laser is what? - ANSWER✔✔Q Switched
A Q switched laser is used for what? - ANSWER✔✔Tattoo removal
Which skin types can tolerate an Alex laser? - ANSWER✔✔1-4
Which skin types can tolerate a Nd:YAG laser? - ANSWER✔✔All skin
types
Which skin type should only have electrolysis and no laser? -
ANSWER✔✔Type 1
If the pulse width is greater than the thermal relaxation time it results
in? - ANSWER✔✔A burn
If the pulse width is less than or equal to the thermal relaxation time
it results in? - ANSWER✔✔Perfect hair removal
Larger structures have __________ thermal relaxation times (TRT) -
ANSWER✔✔Longer
Smaller structures have _______ thermal relaxation times (TRT) -
ANSWER✔✔Shorter