LATEST: Laser Safety Officer Exam with Complete
Solutions
Radiant Energy Correct Answer-Energy that is emitted, transferred or received. Measured
in Joules
Radiant Power Correct Answer-Power emitted, transferred, or received in the form of
radiation. Measured in Watts
Irradiance Correct Answer-Radiant power striking a surface divided by the area it is
striking W/cm2
Radiant Exposure Correct Answer-Exposure over a particular area divided by the area it is
striking W/cm2
What does Laser stand for? Correct Answer-Light Amplification by Stimulated Emission of
Radiation
What does a laser consist of? Correct Answer-A Pumping System - What imparts energy to
the atoms of the lasing medium
, LATEST: Laser Safety Officer Exam with Complete
Solutions
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? Correct Answer-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 Correct Answer-They are single wavelength
(monochromatic) that are tightly in phase with each other (coherent), and they are tightly
focused (collimated)
, LATEST: Laser Safety Officer Exam with Complete
Solutions
What are the two main US Government agencies involved in laser regulation? Correct
Answer-OSHA and FDA
What AFI covers the Laser Radiation protection program Correct Answer-AFI 48-139, we
also use ANSI 136.1
What constitutes a class 1 laser? Correct Answer-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? Correct Answer-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
Solutions
Radiant Energy Correct Answer-Energy that is emitted, transferred or received. Measured
in Joules
Radiant Power Correct Answer-Power emitted, transferred, or received in the form of
radiation. Measured in Watts
Irradiance Correct Answer-Radiant power striking a surface divided by the area it is
striking W/cm2
Radiant Exposure Correct Answer-Exposure over a particular area divided by the area it is
striking W/cm2
What does Laser stand for? Correct Answer-Light Amplification by Stimulated Emission of
Radiation
What does a laser consist of? Correct Answer-A Pumping System - What imparts energy to
the atoms of the lasing medium
, LATEST: Laser Safety Officer Exam with Complete
Solutions
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? Correct Answer-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 Correct Answer-They are single wavelength
(monochromatic) that are tightly in phase with each other (coherent), and they are tightly
focused (collimated)
, LATEST: Laser Safety Officer Exam with Complete
Solutions
What are the two main US Government agencies involved in laser regulation? Correct
Answer-OSHA and FDA
What AFI covers the Laser Radiation protection program Correct Answer-AFI 48-139, we
also use ANSI 136.1
What constitutes a class 1 laser? Correct Answer-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? Correct Answer-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
