Types of Laser

 

  1. According to their sources:
    1. Gas Lasers
    2. Crystal Lasers
    3. Semiconductors Lasers
    4. Liquid Lasers
  2. According to the nature of emission:
    1. Continuous Wave
    2. Pulsed Laser
  3. According to their wavelength:
    1. Visible Region
    2. Infrared Region
    3. Ultraviolet Region
    4. Microwave Region
    5. X-Ray Region

     

    Characteristics of Laser

     

    1. Highly Monochromatic:

      * Laser ray is highly pure beam of light with respect to the wavelength and the frequency of the photons forming it.

    2. Highly Directional

      * laser beam is highly intense and very narrow beam this is because its divergence is very small.

      * Laser beam transfers in straight lines approximately parallel to each other.

    3. Highly Coherent

      * The laser photons are coherent,in phase and have the same direction.