Speckle interferometry measures surface displacement via elastic waves, detecting subsurface defects obscured by shielding members.
An optical imaging system generates squeezed light via non-linear optics to reduce shot noise below the standard quantum limit, enhancing measurement precision.
Segmented toolPods with parallel electron beam imaging elements reduce installation complexity and mask costs while maintaining high precision.
Numerically controlled oscillator phase control generates sensing beat signals proportional to displacement in interferometer systems.
A geometric measurement system uses wavefront stitching to map complex surfaces.
Dynamic current control narrows the unsaturated gain range, maintaining long coherence length for SS-OCT detection sensitivity.