The Defense Advanced Research Projects Agency (DARPA) — the US government department whose work has had a significant impact on the development of the internet and the world wide web — is seeking proposals for "revolutionary" research into the use of ultrafast lasers. The agency states that the technology could find "broad application across the Department of Defense," including in radar, communications, and various types of scanning.
Known as the Program in Ultrafast Laser Science and Engineering (PULSE), DARPA's initiative is focused on lasers which emit discrete pulses of radiation at intervals of a femtosecond or less. One specific use for this extreme speed would be to transfer timing information between hyper-accurate clocks....
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