Laser LightBrooke Horn and Mars Corona
Objectives!
➢Describe the properties of laser light.
➢Explain how laser light has particular
advantages in certain application.
Introduction!
➢What do you know about laser light?
➢Have you ever been to a laser show?
➢How many of you own a CD?
What is laser light?
Light
Amplification by the
Stimulated
Emission of
Radiation.
Properties!
➢Travels in straight lines
➢Monochromatic wavelength, or one color
○ White light have different wavelengths, or many
colors.
➢Directional light
○ Sun light, light bulbs, and candles spread light in
all directions.
Examples!
Properties!
➢Coherent light
○ Laser light travels at the same speed,
amplitude, wavelength, etc.
➢Can get hot quickly!
○ Lasers can send lots of energy to an area very
fast
Example!
Every day life!
➢CD’s
➢Laser shows
➢Hair replacement
➢Tattoo removal
➢Laser eye surgery
➢Scalpels
Examples!
Advantages!
➢Lasers are accurate
➢Laser optics
➢Travels at the speed of light
➢Cut metal and welding
Example!
http://www.dailymotion.com/video/xmj3pw_99-
passes-laser-boobytrap-from-get-smart-
2008_shortfilms
Questions?
➢What direction do lasers move in?
➢Give me some ways lasers can be used in
life.
➢How do lasers differ from the sun?
➢How can lasers be seen through diffraction?
➢How fast do lasers travel?
Sources!
➢ Premasundaran, M., & Dawar, A. L. (n.d.). Retrieved from
http://www.worldoflasers.com/index.htm
➢ Harry, -. H. S. (n.d.). Retrieved from http://ffden-
2.phys.uaf.edu/212_fall2003.web.dir/James_Becwar/uses/
➢ Oregon State (n.d.). Definition and Properties of Laser Light |
Environmental Health and Safety | Oregon State University. Retrieved
October 18, 2013, from http://oregonstate.edu/ehs/laser/training/definition-
and-properties-laser-light
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