LASERS. Incoherent Light Sun Light bulbs Candle flames Many wavelengths make up this type of light.

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Presentation transcript:

LASERS

Incoherent Light Sun Light bulbs Candle flames Many wavelengths make up this type of light

Coherent Light Light of a single wavelength that are in phase This type of light is produced by Lasers

Review: Incoherent vs. Coherent Light

L.A.S.E.R A device that produces coherent light at a single wavelength Light Amplification by Stimulated Emission of Radiation

Real World Benefits to Using Lasers Measure distances with great precision Telescope lasers are used to measure the distance from earth to distant objects Since all wavelengths are in the same direction, a laser can easily be pointed at distant reflectors

Real World Benefits (Medicine) LASIK surgery Body tissues absorb different wavelengths of light Treat tissues that cannot be reached by conventional surgical methods ex: glaucoma

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