What Are the Four Types of Laser?

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Types of Lasers:

  • Gas lasers
  • Solid state lasers
  • Liquid lasers
  • Semiconductor lasers

Laser Hazards:

  • Class 2, Class 3R, Class 3B, and Class 4 lasers
  • Higher classes are hazardous
  • Severe eye and skin injuries
  • Diffuse reflections of Class 4 lasers are also hazardous

Laser Types and Properties:

  • Laser lasing medium description: solid state, gas, excimer, dye, or semiconductor
  • Fiber lasers characteristics
  • Distinct lines by wavelength and tunable lasers
  • Most helium-neon lasers emit at 633 nm

Laser Basics:

  • Intense beams of light production
  • Coherence, directionality, and monochromaticity as unique properties
  • Stimulated emission process explanation
  • Importance of population inversion
  • Hazard classifications for consumer lasers
  • Specific types described by lasing medium
  • Key properties that differentiate lasers

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