Laser Safety Terms in ANSI Exam
Questions with 100% Correct Answers
ablation - ✔✔tissue removal by laser action
Administrative control measure - ✔✔Control measures incorporating
administrative means , e.g., training safety approvals, LSO designation, and
P&P, to mitigate the potential hazards associated with laser use.
average power - ✔✔the total energy imparted during exposure divided by the
exposure duration
aversion response - ✔✔closure of the eyelid, eye movement, pupillary
constriction, or movement of the head to avoid an exposure to a noxious or
bright light stimulant.
blink reflex - ✔✔lid closure associated with the involuntary upward movement
of the eye, triggered by an external event such as an irritation of the cornea or
conjunctiva, a bright flash, the rapid approach of an object, an auditory
stimulus, or with facial movements.
collateral radiation - ✔✔Any electromagnetic radiation, except laser, emitted by
a laser or laser system, which is physically necessary for its operation.
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, collimated beam - ✔✔Effectively, a "parallel" beam of light with very low
divergence or convergence.
Continuous Wave (CW) - ✔✔The output of a laser which is operated in a
continuous rather than a pulsed mode. In this standard, a laser operating with a
continuous output for a period >_ 0.25 seconds is regarded as a CW laser.
Deputy Laser Safety Officer (DLSO) - ✔✔The person authorized and responsible
for managing the laser safety program, in the absence of the LSO.
diffraction - ✔✔Deviation of part of a beam, determined by the wave nature of
radiation and occurring when the radiation passes the edge of an opaque
obstacle.
diffuse reflection - ✔✔Change of the spatial distribution of a beam of radiation
when it is reflected in many directions by a surface or by a medium.
divergence - ✔✔The increase in the diameter of the laser beam with
propagation distance from the exit aperture. Also known as Beam Spread.
embedded laser - ✔✔A laser with an assigned hazard classification higher than
the classification of the laser system in which it is incorporated, where the
system's lower classification is the result of engineering features which limit the
accessible emission.
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©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025.
Questions with 100% Correct Answers
ablation - ✔✔tissue removal by laser action
Administrative control measure - ✔✔Control measures incorporating
administrative means , e.g., training safety approvals, LSO designation, and
P&P, to mitigate the potential hazards associated with laser use.
average power - ✔✔the total energy imparted during exposure divided by the
exposure duration
aversion response - ✔✔closure of the eyelid, eye movement, pupillary
constriction, or movement of the head to avoid an exposure to a noxious or
bright light stimulant.
blink reflex - ✔✔lid closure associated with the involuntary upward movement
of the eye, triggered by an external event such as an irritation of the cornea or
conjunctiva, a bright flash, the rapid approach of an object, an auditory
stimulus, or with facial movements.
collateral radiation - ✔✔Any electromagnetic radiation, except laser, emitted by
a laser or laser system, which is physically necessary for its operation.
Page 1 of 13
©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025.
, collimated beam - ✔✔Effectively, a "parallel" beam of light with very low
divergence or convergence.
Continuous Wave (CW) - ✔✔The output of a laser which is operated in a
continuous rather than a pulsed mode. In this standard, a laser operating with a
continuous output for a period >_ 0.25 seconds is regarded as a CW laser.
Deputy Laser Safety Officer (DLSO) - ✔✔The person authorized and responsible
for managing the laser safety program, in the absence of the LSO.
diffraction - ✔✔Deviation of part of a beam, determined by the wave nature of
radiation and occurring when the radiation passes the edge of an opaque
obstacle.
diffuse reflection - ✔✔Change of the spatial distribution of a beam of radiation
when it is reflected in many directions by a surface or by a medium.
divergence - ✔✔The increase in the diameter of the laser beam with
propagation distance from the exit aperture. Also known as Beam Spread.
embedded laser - ✔✔A laser with an assigned hazard classification higher than
the classification of the laser system in which it is incorporated, where the
system's lower classification is the result of engineering features which limit the
accessible emission.
Page 2 of 13
©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025.
