Last Updated
：2025/11/21
photo echo
（ plural ）
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(physics) A form of resonance sometimes observed as a coherent pulse of light after two similar pulses have traversed a medium.
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photo echo
The researchers identified a clear photo echo in the crystal after two ultrashort laser pulses passed through it.
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The researchers identified a clear photo echo in the crystal after two ultrashort laser pulses passed through it.
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