Subjects: Optics >> Ultrafast optics submitted time 2024-01-31
Abstract: The original 3D image, denoted as I(x-y-t), is encoded and modulated using digital micromirror devices (DMD), subsequently transmitted to a slit full-open fringe image converter. By means of deflection via a deflecting electric field, multiple images at various time points are superimposed, resulting in the generation of the final integral image on the CCD. To reconstruct multiple original images I(x-y-t) from the CCD integral images, a total variational restoration algorithm is employed. In this study, we simulate the process of image acquisition and the restoration algorithm within the compressed ultrafast imaging system. As a result, we obtain eight dynamic 2D images depicting laser transmission through an air medium. Each image is exposed for a duration of 12.5 ps, and the reconstructed signal demonstrates a similarity of 0.92 when compared to the original signal.