Lesson 6 - LASERs

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12 Terms

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4 characteristics of a laser

  • coherent

  • monochromatic

  • low divergence (collimated)

  • inefficient

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Coherent

matching wavelengths, phases, amplitudes → constructive interference

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Monochromatic

single frequency → selective radiator

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low divergence (collimated)

small spreading

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inefficient

about 2-30% of power input ultimately converts to LASER output power

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Relationship between spot diameter and range

As range increases, so does spot diameter

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What are the 4 primary military laser applications?

  • range finding

  • target designation

  • directed energy weapon

  • dazzling

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Range finding

range to target

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target designation

marking targets, homing for bombs and artillery

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directed energy weapon

trying to burn through the target

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dazzling

disrupting the laser

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Effect of thermal blooming

Causes the laser to move in strange ways