Laser and Its Types


There are four types which are: solid state, gas, dye, and semiconductor. The characteristics of each type will be described. Solid State Lasers employ a lasing material distributed in a solid matrix. One example is the Neodymium: YAG laser (Nd:YAG).




  • Solid-state laser:   A solid-state laser is a laser that uses solid as a laser medium. In these lasers, glass or crystalline materials are used


  • Gas laser:             A gas laser is a laser in which an electric current is discharged through a gas inside the laser medium to produce laser light. In gas lasers, the laser medium is in the gaseous state


  • Liquid laser:        A liquid laser is a laser that uses the liquid as laser medium. In liquid lasers, light supplies energy to the laser medium.


  • Semiconductor laser: Semiconductor lasers play an important role in our everyday life. These lasers are very cheap, compact size and consume low power. Semiconductor lasers are also known as laser diodes.


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