Credit: Light: Science & Applications
HHG EUV reflection ptychography reconstruction results. Over 200 million parameters of the ptychography model have been optimized to reconstruct the probe and object, alongside calibrating the camera background, scanning information, propagation distance, etc. The experiment uses two EUV wavelengths, and we assumed six spatial-modes for the probe at each wavelength. To gain some insights, we illustrate the number of parameters in some famous deep neural network models for image/language processing here: AlexNet64 (60 million), GPT-165 (117 million), VGGNet66 (134 million), Bert67 (340 million), GPT-3.5-turbo (175 billion), etc.