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