2024-2025 | | ALREADY PASSED!!! (GRADED A+)
Laser stands for what? - (ANSWERS)Light
Amplification by
Stimulated
Emission of
Radiation
What is the distance measured in nanometers between two peaks or two troughs known as? -
(ANSWERS)Wavelength
Light of only one color & one specific wavelength is known as? - (ANSWERS)Monochromatic
Refraction is also known as what? - (ANSWERS)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? - (ANSWERS)Stimulated Emission
The states of equilibrium or middle state of light - (ANSWERS)Metastable State
Who theorized stimulated emission? - (ANSWERS)Albert Einstein
The part of the laser that contains the active medium is called? - (ANSWERS)Resinator cavity
What are the states of light in stimulated emission? - (ANSWERS)Ground State
Excited State
Singlet State
Metastable State
Alexandrite laer is in the visible light spectrum at what wavelength? - (ANSWERS)755 nm
,The Nd:YAG laser falls in the invisible light spectrum with a wavelength of what? - (ANSWERS)1064
nm
What type of wave is used in laser hair removal? - (ANSWERS)Pulsed wave
A chromophore is also know at what? - (ANSWERS)Target
The chromophore absorbs what? - (ANSWERS)Energy
Goggles worn by the patient and practitioner must be approved by which group? - (ANSWERS)ANSI
(American National Standard Institute) for Class 3B and Class 4 Lasers
Each laser wavelength is what to its machine? - (ANSWERS)Specific
What are the parameters when doing laser hair removal? - (ANSWERS)Wavelength
Spot Size
Fluence
Pulse Width
Pulsed lasers allow for selective heating of specific targets, this is also known as? -
(ANSWERS)Selective Photothermolysis
The rate/amount of energy delivered within a given area is known as? - (ANSWERS)Fluence
An increase in fluence equals an increase in what? - (ANSWERS)Heat. Resulting in more damage
The length of time the light/energy is in contact with the target that is measured in milliseconds (ms):
- (ANSWERS)Pulse width/Pulse duration
If the time of pulse duration is changed from milliseconds to nanoseconds the laser is what? -
(ANSWERS)Q Switched
A Q switched laser is used for what? - (ANSWERS)Tattoo removal
,Which skin types can tolerate an Alex laser? - (ANSWERS)1-4
Which skin types can tolerate a Nd:YAG laser? - (ANSWERS)All skin types
Which skin type should only have electrolysis and no laser? - (ANSWERS)Type 1
If the pulse width is greater than the thermal relaxation time it results in? - (ANSWERS)A burn
If the pulse width is less than or equal to the thermal relaxation time it results in? -
(ANSWERS)Perfect hair removal
Larger structures have __________ thermal relaxation times (TRT) - (ANSWERS)Longer
Smaller structures have _______ thermal relaxation times (TRT) - (ANSWERS)Shorter
What kind of pulse widths protect the epidermis, penetrate deeper and cool more slowly? -
(ANSWERS)Long
Longer pulse widths are for what skin type? - (ANSWERS)4-6
What kind of pulse widths are more aggressive and heat up and cool down quickly? -
(ANSWERS)Short
Shorter pulse widths are for what skin type? - (ANSWERS)1-3
What percentage of follicles are damaged with each laser treatment? - (ANSWERS)15%
What is a long-term stable reduction of the growing hairs after a treatment regime? -
(ANSWERS)Laser Hair Removal (LHR)
What does the FDA call laser hair removal? - (ANSWERS)Permanent hair reduction
, What is the highest setting the skin can tolerate without damage called? - (ANSWERS)Fluence
Threshold
What is the highest setting the patient can tolerate without the treatment becoming impossible
called? - (ANSWERS)Patient Threshold
The amount of hair per one square centimeter is known as? - (ANSWERS)Hair density
The higher the hair density, the _______ the fluence? - (ANSWERS)Lower
What percentage of overlapping do you want when doing LHR? - (ANSWERS)30%
Darker/tanned skin requires what kind of fluence? - (ANSWERS)Lower
What should you never use to clean a patient's skin prior to LHR? - (ANSWERS)Alcohol
Pulse duration is measured in what unit? - (ANSWERS)milliseconds (ms)
Spot size is measured in what unit? - (ANSWERS)millimeters (mm)
Repetition rate is measured in what unit? - (ANSWERS)hertz (Hz)
Who is the grandfather of laser and was the first person to use water to cool the skin during laser? -
(ANSWERS)Rox Anderson
The formula for fluence is? - (ANSWERS)Joules = J/cm2
What kind of lasers allow for selective heating of specific targets? - (ANSWERS)Selective
photothermolysis
For deeper laser penetration what should the practitioner do to the laser? - (ANSWERS)Change to a
bigger spot size