Free Electron Laser

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Most lasers come in only one color. This is like having a radio that is stuck on one station - if that station is boring, you're out of luck. Jefferson Lab scientists have built a new kind of laser, called a free electron laser, that can be tuned to many different colors. This type of laser can then be used by companies to make things, such as stain resistant rugs and comfortable feeling polyester fabrics, without chemicals.