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Laser Technician Questions and Verified Answers
What are the three properties of lasers that are not shared by intense pulsed
light (IPL)?
Ans: 1. Lasers are monochromatic (IPL is polychromatic) 2. Lasers have
coherent energy (IPL is incoherent) 3. Lasers' energy is collimated (IPL is
divergent)
What does it mean that lasers are monochromatic and IPL is polychromatic?
Ans: Laser light contains 1 wavelength and 1 color, which usually treats
one chromophore. IPL targets multiple chromophores with visible and
infrared light
What does it mean that lasers have coherent energy and IPL is incoherent?
Ans: Laser light travels as a single unit of energy which is precise and able
to be manipulated. IPL can travel in different directions causing forward and
backward scatter
What does it mean that lasers energy is collimated and IPL is divergent?
Ans: Laser photons are parallel, the beam has minimal divergence helping
laser light to remain in phase for extended distances. IPL has forward and
backward scatter
What are the four laser tissue interactions?
Ans: 1. Absorption 2. Reflection 3. Transmission 4. Scattering
What is selective photo thermolysis?
Ans: Targeting a specific chromophore with precise wavelength of light and
accurate duration of pulse for adequate thermal energy (staying within TRT)
to chromophore and maintaining minimal to no damage to surrounding area
What is a LED device?
Ans: Light emitting diode devices that are non-ablative, non-thermal and
stimulate Photo modulation in cells which triggers a bio chemical response
that speeds up cellular metabolism. This can help suppress aging, speed
healing, and reduce inflammation
Define the two types of radio frequency devices.
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Ans: Monopolar and bipolar. Monopolar devices use electrical energy which
creates resistance that is converted to heat and exits body through
dispersing electrode. Bipolar have electrical current contained within
handpiece by having opposite charges on opposite ends.
What are the two principal aging processes?
Ans: Extrinsic aging, intrinsic ageing. Intrinsic ageing is genetics and
gravity, extrinsic ageing this portion for which we are responsible and
external factors
What are the two main layers of the skin?
Ans: Epidermis, dermis
What are GAGs?
Ans: glycosaminoglycans which are polysaccharide chains that can bind
water up to 1000x their weight. GAG's attract moisture, aged skin appears
to have less GAG's
What is NMF?
Ans: Natural moisturizing factors, found in upper skin layer (stratum
corneum) allowing cells to bind with water. NMF produces soft, flexible skin
Why is TEWL important?
Ans: Transepidermal water loss is important because this water loss is
through evaporation through our skin and can be replaced with water
intake
What are the three phases of wound healing?
Ans: inflammatory, proliferative, remodeling
What is an acute wound?
Ans: When that happen quickly, can be severe, and have short course of
duration
How is an acute wound different from a chronic wound?
Ans: Acute wound has much shorter duration of healing and caused a lot
faster than chronic. In some cases, chronic wounds may never fully heal
(chronic illnesses)
Laser Technician Questions and Verified Answers
What are the three properties of lasers that are not shared by intense pulsed
light (IPL)?
Ans: 1. Lasers are monochromatic (IPL is polychromatic) 2. Lasers have
coherent energy (IPL is incoherent) 3. Lasers' energy is collimated (IPL is
divergent)
What does it mean that lasers are monochromatic and IPL is polychromatic?
Ans: Laser light contains 1 wavelength and 1 color, which usually treats
one chromophore. IPL targets multiple chromophores with visible and
infrared light
What does it mean that lasers have coherent energy and IPL is incoherent?
Ans: Laser light travels as a single unit of energy which is precise and able
to be manipulated. IPL can travel in different directions causing forward and
backward scatter
What does it mean that lasers energy is collimated and IPL is divergent?
Ans: Laser photons are parallel, the beam has minimal divergence helping
laser light to remain in phase for extended distances. IPL has forward and
backward scatter
What are the four laser tissue interactions?
Ans: 1. Absorption 2. Reflection 3. Transmission 4. Scattering
What is selective photo thermolysis?
Ans: Targeting a specific chromophore with precise wavelength of light and
accurate duration of pulse for adequate thermal energy (staying within TRT)
to chromophore and maintaining minimal to no damage to surrounding area
What is a LED device?
Ans: Light emitting diode devices that are non-ablative, non-thermal and
stimulate Photo modulation in cells which triggers a bio chemical response
that speeds up cellular metabolism. This can help suppress aging, speed
healing, and reduce inflammation
Define the two types of radio frequency devices.
, Page | 2
Ans: Monopolar and bipolar. Monopolar devices use electrical energy which
creates resistance that is converted to heat and exits body through
dispersing electrode. Bipolar have electrical current contained within
handpiece by having opposite charges on opposite ends.
What are the two principal aging processes?
Ans: Extrinsic aging, intrinsic ageing. Intrinsic ageing is genetics and
gravity, extrinsic ageing this portion for which we are responsible and
external factors
What are the two main layers of the skin?
Ans: Epidermis, dermis
What are GAGs?
Ans: glycosaminoglycans which are polysaccharide chains that can bind
water up to 1000x their weight. GAG's attract moisture, aged skin appears
to have less GAG's
What is NMF?
Ans: Natural moisturizing factors, found in upper skin layer (stratum
corneum) allowing cells to bind with water. NMF produces soft, flexible skin
Why is TEWL important?
Ans: Transepidermal water loss is important because this water loss is
through evaporation through our skin and can be replaced with water
intake
What are the three phases of wound healing?
Ans: inflammatory, proliferative, remodeling
What is an acute wound?
Ans: When that happen quickly, can be severe, and have short course of
duration
How is an acute wound different from a chronic wound?
Ans: Acute wound has much shorter duration of healing and caused a lot
faster than chronic. In some cases, chronic wounds may never fully heal
(chronic illnesses)
