Lasers and their uses

 Lasers are used for many different reasons. One of the main uses of lasers is for cutting flat materials. Lasers are also used for technology. Medicine lasers are used almost every day with surgeries. These lasers are much more accurate because the heat of the lasers causes thet issue around the cut to heal. In electronics lasers are used for reading bumps on the surface of a disk/c.d. When the laser hits the surface it will reflect off the disk. A detector will record where the laser is reflected, and the information is used to read information on the disk. 

This is how the laser works. 

Below is a diagram of a YAG solid state laser however the basic principle applies to all lasers.

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