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