LASER HAIR REMOVAL UPDATED TESTED QUESTIONS AND
ANSWERS GRADED A+
✔✔Ultraviolet light - ✔✔Highly energetic with shorter wavelengths than visible light
✔✔UVA rays - ✔✔95% of UV radiation that reaches the earth
✔✔UVA rays - ✔✔Penetrate the skin more deeply and are dominate tanning rays.
Cause photo aging and skin cancer
✔✔UVB rays - ✔✔Cause skin burns and effect the epidermis. Also cause cancer and
photo aging
✔✔UVC RAYS - ✔✔Rays are absorbed by the ozone layer and don't reach the earth
✔✔Gamma rays - ✔✔Have the shortest most powerful wavelength and the most
energetic form of light
✔✔Gamma rays can kill living cells - ✔✔Used in medicine to kill cancerous cells
✔✔Laser light - ✔✔Is coherent
Monochromatic
Collimated
✔✔IPL Light - ✔✔Is polychromatic
Scattered and
Non collimated
✔✔Construction of a laser - ✔✔1. Flash lamp, pump source
2. Crystal, laser medium
3. Optical resonators , highly reflective mirror and a partially reflective mirror
✔✔YAG - ✔✔Yttrium aluminum garnet
✔✔Coherent energy - ✔✔Laser photons travel through space both temporally and
spatially.
Travel in Time and space in perfect unison in one direction. In phase or in step
✔✔Monochromatic - ✔✔Laser light is composed of one wave length and one color
weather visible or invisible
✔✔Collimated - ✔✔Photon are parallel to each other in a diameter of the beam to
produce a focused spot by using a lens
, ✔✔Fluence - ✔✔The energy of the pulsed laser beam it is expressed in joules per cm2
✔✔Joule - ✔✔The unit of energy or work
✔✔NS. Nanosecond - ✔✔Pulse duration or width is measured in
✔✔Spot size - ✔✔Spot size is measured in mm. Millimeters
✔✔Optical energy - ✔✔Is determined by the lasers power,spot size and the pulse
duration or pulse width
✔✔Laser lens - ✔✔Can be used to adjusted the intensity to be used for cutting,
coagulation, or heating
✔✔NG YAG LASER - ✔✔Is a solid state laser
✔✔Laser therapies - ✔✔Laser hair removal
Tattoo removal
Teeth whitening
LASIK
Vascular lesions
Pigmented lesions
✔✔Selective photothermolysis - ✔✔By selection of a specific wavelength unique to one
target chromophores. Heat can be delivered rapidly to the target before it can affect the
surrounding tissue
✔✔Melanin Chromophores - ✔✔Melanin for hair removal
✔✔Hemoglobin chromophores - ✔✔Hemoglobin , vascular targeted for spider veins
✔✔H2o water chromophores - ✔✔For resurfacing water is targeted since the body and
tissue is made up of mainly water.
✔✔TRT
Thermal relaxation time - ✔✔Is the amount of time necessary for the target to lose 50%
of the heat
✔✔Laser penetration depth - ✔✔Penetration of laser depth from shallow to deepest
Ruby , Alex,diode , nd yag
✔✔FDA approved IPL for cosmetic use in the mid 1990s - ✔✔The mid 1990s the FDA
approved intense pulse light for various cosmetic defects including pigmented and
vascular lesions as well as hair
ANSWERS GRADED A+
✔✔Ultraviolet light - ✔✔Highly energetic with shorter wavelengths than visible light
✔✔UVA rays - ✔✔95% of UV radiation that reaches the earth
✔✔UVA rays - ✔✔Penetrate the skin more deeply and are dominate tanning rays.
Cause photo aging and skin cancer
✔✔UVB rays - ✔✔Cause skin burns and effect the epidermis. Also cause cancer and
photo aging
✔✔UVC RAYS - ✔✔Rays are absorbed by the ozone layer and don't reach the earth
✔✔Gamma rays - ✔✔Have the shortest most powerful wavelength and the most
energetic form of light
✔✔Gamma rays can kill living cells - ✔✔Used in medicine to kill cancerous cells
✔✔Laser light - ✔✔Is coherent
Monochromatic
Collimated
✔✔IPL Light - ✔✔Is polychromatic
Scattered and
Non collimated
✔✔Construction of a laser - ✔✔1. Flash lamp, pump source
2. Crystal, laser medium
3. Optical resonators , highly reflective mirror and a partially reflective mirror
✔✔YAG - ✔✔Yttrium aluminum garnet
✔✔Coherent energy - ✔✔Laser photons travel through space both temporally and
spatially.
Travel in Time and space in perfect unison in one direction. In phase or in step
✔✔Monochromatic - ✔✔Laser light is composed of one wave length and one color
weather visible or invisible
✔✔Collimated - ✔✔Photon are parallel to each other in a diameter of the beam to
produce a focused spot by using a lens
, ✔✔Fluence - ✔✔The energy of the pulsed laser beam it is expressed in joules per cm2
✔✔Joule - ✔✔The unit of energy or work
✔✔NS. Nanosecond - ✔✔Pulse duration or width is measured in
✔✔Spot size - ✔✔Spot size is measured in mm. Millimeters
✔✔Optical energy - ✔✔Is determined by the lasers power,spot size and the pulse
duration or pulse width
✔✔Laser lens - ✔✔Can be used to adjusted the intensity to be used for cutting,
coagulation, or heating
✔✔NG YAG LASER - ✔✔Is a solid state laser
✔✔Laser therapies - ✔✔Laser hair removal
Tattoo removal
Teeth whitening
LASIK
Vascular lesions
Pigmented lesions
✔✔Selective photothermolysis - ✔✔By selection of a specific wavelength unique to one
target chromophores. Heat can be delivered rapidly to the target before it can affect the
surrounding tissue
✔✔Melanin Chromophores - ✔✔Melanin for hair removal
✔✔Hemoglobin chromophores - ✔✔Hemoglobin , vascular targeted for spider veins
✔✔H2o water chromophores - ✔✔For resurfacing water is targeted since the body and
tissue is made up of mainly water.
✔✔TRT
Thermal relaxation time - ✔✔Is the amount of time necessary for the target to lose 50%
of the heat
✔✔Laser penetration depth - ✔✔Penetration of laser depth from shallow to deepest
Ruby , Alex,diode , nd yag
✔✔FDA approved IPL for cosmetic use in the mid 1990s - ✔✔The mid 1990s the FDA
approved intense pulse light for various cosmetic defects including pigmented and
vascular lesions as well as hair
