Fast, spatially-resolved thermometry of Si and GaP crystals using pump-probe two-photon absorption


Noncontact thermometry with micron-scale lateral spatial resolution and fast time resolution is shown to be enabled by measuring the temperature dependence of two-photon absorption TPA on crystalline semiconductors. In the proof-of-concept experiments reported here, for studies of Si, an Er:fiber laser at =1.56 m is split into pump and probe beams; where… (More)


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