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Laser Safety Officer - BEO Questions and Answers (Rated 100%)
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Laser Safety Officer - BEO Questions and Answers (Rated 100%)
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1|Page | © copyright 2024/2025 | Grade A+Laser Safety Officer - BEO Questions
and Answers (Rated 100%)
Radiant Energy (Q)
✓ Energy that is emitted, transferred or received. Measured in Joules (J)
Radiant Power
✓ Power emitted, transferred, or received in the form of radiation.
Measured in Watts (W)
Irradiance (E)
✓ (Power Density) Radiant power striking a surface divided by the surface
area W/cm2
Radiant Exposure (H)
✓ (Energy Density) Energy striking a surface divided by the surface area
exposed J/cm2
What does Laser stand for?
✓ Light Amplification by Stimulated Emission of Radiation
Master01 | October, 2024/2025 | Latest update
, 1|Page | © copyright 2024/2025 | Grade A+
What does a laser consist of?
✓ A Pumping System - Source of the power that imparts energy to the
atoms of the lasing medium to create photons
✓ An Optical Cavity - Contains the medium, has mirrors and provides
amplification/selection of photons
✓ Laser medium - Can be solid state matrix(ND:YAG), gaseous (HeNe
632.8nm red, CO2, Ar,Kr), dye lasers (Rhodamine 6G), and
semiconductor (Gallium Arsenide diode )
What are the two modes of laser operation?
✓ Continuous Wave - Stable beam power over 0.25s
✓ Pulsed -
✓ Single Pulsed/Repetitively pulsed - Pulsed repetitively per second (Hz)
✓ Q-switched - stored PE to increase power before release
✓ Mode Lock - Modulating standing waves of slightly different
wavelengths combine to produce short pulses
What are three characteristics of a laser beam
Master01 | October, 2024/2025 | Latest update
, 1|Page | © copyright 2024/2025 | Grade A+
✓ Monochromatic - Single wavelength
✓ Coherent - Waves of laser light tightly in phase with each other
✓ Collimated - Highly focused
What are the three main US Government agencies involved in laser
regulation?
✓ OSHA, Federal Aviation Administration (FAA) and FDA
What AFI covers the Laser Radiation protection program
✓ AFI 48-139 (minimum requirement for RPP) and DoD Instruction 6055.15,
we also use ANSI 136.1(commercial)
What constitutes a class 1 laser?
✓ Cannot emit laser radiation capable of causing eye/skin injury.
✓ A 1M is similar, but can cause damage if passed through magnifying
optics.
✓ These may be a higher class during maintenance/service
What constitutes a class 2 laser?
Master01 | October, 2024/2025 | Latest update
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