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Laser Safety Officer (AF) Questions and Answers (Rated 100%)
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Laser Safety Officer (AF) Questions and Answers (Rated 100%)
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1|Page | © copyright 2024/2025 | Grade A+Laser Safety Officer (AF) Questions
and Answers (Rated 100%)
Class 1 Laser Classification
✓ - cannot emit laser radiation at levels that are known to cause eye or
skin injury during normal operation
✓ -very low power or beam is fully enclosed
Class 1M Laser Classification
✓ -incapable of hazardous exposure conditions during normal ops unless
viewed with collecting optics (binoculars)
✓ -exempt from control measures, other than to prevent optical aided
viewing
✓ -exempt from other forms of surveillance
Class 2 Laser Classification
✓ -low power, emit in visible spectrum (400-700 nm)
✓ -not considered strong enough to damage eyes because a person will
normally blink and look away if it enters their eyes (aversion response)
Class 2M Laser Classification
Master01 | October, 2024/2025 | Latest update
, 1|Page | © copyright 2024/2025 | Grade A+
✓ -potentially hazardous if viewed with collecting optics
✓ -upper limit on a continuous wave laser in this class is 500 mW
Class 3R Laser Classification
✓ -intermediate powered, hazardous under direct and specular
reflection viewing
✓ -can produce no more that 5 mW in the visible region
Class 3B Laser Classification
✓ -hazarous under direct and specular reflection viewing
✓ -not normally a diffuse reflection or fire hazard
✓ operate between 5-500 mW for CW systems
✓ cannot produce radiation energy greater than 0.125 J for pulsed
systems
Class 4 Laser Classification
✓ -high power, hazardous to eye or skin from direct beam
✓ -may pose a diffuse reflection or fire hazard
✓ -pose ancillary hazards including laser-generated air contaminants and
hazardous plasma radiation
Master01 | October, 2024/2025 | Latest update
, 1|Page | © copyright 2024/2025 | Grade A+
Laser components
✓ -pumping system
✓ -lasing medium
✓ -optical cavity
Pumping System
✓ -source of power that excites the lasing medium in order to create
photons for the laser beam
✓ -can be an electrical source, a flash lamp or another laser
Lasing Medium
✓ -what determines the wavelength of the system
✓ -four types: solid state, gas, dye, and semiconductor
Optical Cavity
✓ -contains the lasing medium and reflective mirrors that guide the laser
beam
✓ -provide amplification to create the desired laser parameters
LASER acronym
Master01 | October, 2024/2025 | Latest update
, 1|Page | © copyright 2024/2025 | Grade A+
✓ Light
✓ Amplification by
✓ Stimulated
✓ Emission of
✓ Radiation
Beam Characteristics
✓ -monochromatic
✓ -coherent
✓ -collimated
Monochromatic
✓ -light emitted by a laser is almost pure in color of a single wavelength
Coherent
✓ -measure of the degree of phase correlation that exists in the radiation
field of a light source at different locations and different times
✓ -waves are tightly in phase or in step with one another
Collimated
Master01 | October, 2024/2025 | Latest update
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