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Scientists capture real-time birth of ultrafast laser pulses

Scientists have captured the moment a laser "comes to life"—and what they found challenges long-held beliefs. Using a special technique to film laser light in real time, researchers observed how multiple pulses grow and organize themselves into a stable rhythm. Instead of one pulse splitting into many (as previously thought), these pulses are amplified and evolve through five fast-paced phases, from initial chaos to perfect synchronization. This discovery not only deepens our understanding of how lasers work but could also lead to sharper, faster technologies in communication, measurement, and manufacturing.

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