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Laser Safety Officer Questions and Answers (Rated 100%)
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Laser Safety Officer Questions and Answers (Rated 100%)
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1|Page | © copyright 2024/2025 | Grade A+Laser Safety Officer Questions and
Answers (Rated 100%)
Radiant Energy
✓ Energy that is emitted, transferred or received. Measured in Joules
Radiant Power
✓ Power emitted, transferred, or received in the form of radiation.
Measured in Watts
Irradiance
✓ Radiant power striking a surface divided by the area it is striking W/cm2
Radiant Exposure
✓ Exposure over a particular area divided by the area it is striking W/cm2
What does Laser stand for?
✓ Light Amplification by Stimulated Emission of Radiation
What does a laser consist of?
Master01 | October, 2024/2025 | Latest update
, 1|Page | © copyright 2024/2025 | Grade A+
✓ A Pumping System - What imparts energy to the atoms of the lasing
medium
✓ An Optical Cavity - Contains the medium, has mirrors and provides
amplification/selection of photons
✓ Laser medium - Can be solid state (ND:YAG), gaseous (HeNe, CO2,
Ar,Kr), dye lasers (Rhodamine 6G), and semiconductor
What are the four modes of laser operation?
✓ Continuous Wave - Beam time over 0.25s
✓ Single Pulsed -
✓ Single Pulsed Q-switched - stored to increase power before release
✓ Repetitively pulsed - Pulsed repetitively
✓ The different time modes provide different rates at which energy is
delivered
What are three characteristics of a laser beam
✓ They are single wavelength (monochromatic) that are tightly in phase
with each other (coherent), and they are tightly focused (collimated)
What are the two main US Government agencies involved in laser regulation?
Master01 | October, 2024/2025 | Latest update
, 1|Page | © copyright 2024/2025 | Grade A+
✓ OSHA and FDA
What AFI covers the Laser Radiation protection program
✓ AFI 48-139, we also use ANSI 136.1
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?
✓ 2 - Staring into beam is an eye hazard. CW max 1mW
✓ 2M - Potentially hazardous if collecting optics are used;
✓ CW max 500mW
✓ These lasers are in the visible light spectrum 400-700nm
What constitutes a class 3 laser?
Master01 | October, 2024/2025 | Latest update
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