Visual inspection and dimensional control of the samples were carried out using a high-resolution digital light microscope. The Keyence VHX system, shown in the image, was used to precisely measure and document the geometry of the fabricated structures. This method allowed for non-destructive evaluation of the surface features and ensured that the produced diaphragms met the required dimensional specifications. The combination of visual inspection and optical measurement played a crucial role in the iterative optimization of the laser processing parameters.
