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A new approach to synthesize self‐doped colloidal Cu3−xP NCs with controlled size and localized surface plasmon resonance absorption is reported. These Cu3−xP NCs show ultrafast exciton dynamics and huge optical nonlinearities due to plasmonic resonances, which afford the first demonstration of plasmonic Cu3−xP NCs as simple, effective, and solution‐processed nonlinear absorbers for high‐energy Q‐switched...
Q. Bao, W. Ma and co‐workers demonstrate the usage of plasmonic Cu3−xP colloidal nanocrystals as a new type of tunable saturable absorber for the generation of high‐energy pulses in a fiber laser. As described on page 3535, these low‐cost, solution‐processed, next‐generation nonlinear optical materials can be harnessed for applications in signal processing and optical communication.
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