Laser and Light-Based Hair Removal
Physics with Complete Solutions
What is the acronym for LASER? - ANSWER-Light Amplification by Stimulated
Emission of Radiation
Photothermolysis is based on the principle of using: - ANSWER-Laser energy to
selectively destroy a target beneath the surface of the skin
The measure of energy density delivered to the tissue expressed in joules per cm2 is
called? - ANSWER-Fluence
The principle of selective photothermolysis relies on the presence of what substance in
the follicle and surrounding structure? - ANSWER-Melanin
Laser pulse width represents the: - ANSWER-Amount of time the target is exposed to
the laser
In laser hair removal the most important consideration associated with spot size is the: -
ANSWER-Depth of penetration of the energy into the dermis
The amount of time it takes a substance after heating to return to its normal temperature
is known as: - ANSWER-Thermal relaxation time
When excited with a flashlamp the ehe alexandrite crystal emits radiation at: -
ANSWER-755nm
Select the response with all the correct properties of laser light as it reacts with tissue. -
ANSWER--Reflection
Physics with Complete Solutions
What is the acronym for LASER? - ANSWER-Light Amplification by Stimulated
Emission of Radiation
Photothermolysis is based on the principle of using: - ANSWER-Laser energy to
selectively destroy a target beneath the surface of the skin
The measure of energy density delivered to the tissue expressed in joules per cm2 is
called? - ANSWER-Fluence
The principle of selective photothermolysis relies on the presence of what substance in
the follicle and surrounding structure? - ANSWER-Melanin
Laser pulse width represents the: - ANSWER-Amount of time the target is exposed to
the laser
In laser hair removal the most important consideration associated with spot size is the: -
ANSWER-Depth of penetration of the energy into the dermis
The amount of time it takes a substance after heating to return to its normal temperature
is known as: - ANSWER-Thermal relaxation time
When excited with a flashlamp the ehe alexandrite crystal emits radiation at: -
ANSWER-755nm
Select the response with all the correct properties of laser light as it reacts with tissue. -
ANSWER--Reflection
