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 fal ls 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 give n 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 widt h/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 ti mes (TRT) - ANSWER -Shorter .What kind of pulse widths protect the epidermis, penetrate deeper and cool more slowly? - ANSWER -Long .Longer pulse widths are for what skin type? - ANSWER -4-6 .What kind of pulse widths are more aggressive and heat up and co ol down quickly? - ANSWER -Short .Shorter pulse widths are for what skin type? - ANSWER -1-3 .What percentage of follicles are damaged with each laser treatment? - ANSWER -15% .What is a long -term stable reduction of the growing hairs after a treatment reg ime? - ANSWER -Laser Hair Removal (LHR) .What does the FDA call laser hair removal? - ANSWER -Permanent hair reduction .What is the highest setting the skin can tolerate without damage called? - ANSWER -
Fluence Threshold .What is the highest setting the pa tient can tolerate without the treatment becoming impossible called? - ANSWER -Patient Threshold .The amount of hair per one square centimeter is known as? - ANSWER -Hair density .The higher the hair density, the _______ the fluence? - ANSWER -Lower .What percentage of overlapping do you want when doing LHR? - ANSWER -30% .Darker/tanned skin requires what kind of fluence? - ANSWER -Lower .What should you never use to clean a patient's skin prior to LHR? - ANSWER -Alcohol .Pulse duration is measured in what unit? - ANSWER -milliseconds (ms) .Spot size is measured in what unit? - ANSWER -millimeters (mm) .Repetition rate is measured in what unit? - ANSWER -hertz (Hz) .Who is the grandfather of laser and was the first person to use water to cool the skin during laser? - ANSWER -Rox Anderson .The formula for fluence is? - ANSWER -Joules = J/cm2 .What kind of lasers allow for selective heating of specific targets? - ANSWER -Selective photothermolysis