1. Optical coherence tomography—in situ and high-speed 3D imaging for laser materials processing

    Optical coherence tomography—in situ and high-speed 3D imaging for laser materials processing

    Exploiting Fourier-domain optical coherence tomography, a high-speed and real-time inspection of multi-photon 3D laser printing has been reported. We expect that this technique can be further extended to single shot compressive 3D imaging for studying the ultrafast dynamics of laser-matter interaction. Femtosecond lasers are essential tools for micro/nanoscale surface patterning 1 , as well as 3D lithography and printing 2 , 3 . Aiming for highly precision laser engineering, in situ and high-speed monitoring is of significance. While the wide-field microscopy enables a convenient in situ monitoring, it is limited to 2D imaging. The other advanced imaging methods, such as scanning electron ...

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