A team of researchers led by a Dartmouth physicist has built the first table-top free-electron laser capable of producing a bright, tunable beam of infrared light. The prototype device -- built around a souped-up scanning electron microscope scavenged from colleagues -- replaces the stadium-sized accelerators used in current generation free-electron lasers with an apparatus no bigger than two large suitcases. The total power available from the much smaller device is low compared to that of the large machines, but well-matched to the needs of many important applications in such fields as atmospheric physics, chemistry, medicine and radio astronomy.
The above story is based on materials provided by Dartmouth College. Note: Materials may be edited for content and length.
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