Sample: Femtosecond laser-textured stainless steel

Optical configuration: 40× objective, NA 0.75

Inspection method: Non-contact optical imaging in air, without destructive sample preparation.

Application: Characterization of laser-induced microstructures, surface morphology and local manufacturing variations.

Sample: Zirconia ceramic (ZrO₂) structured by Direct Laser Interference Patterning (DLIP).

Optical configuration: 40× objective, NA 0.75, 450 nm illumination.

Lateral resolution: Approximately 120 nm.

Inspection method: High-resolution optical imaging of periodic laser-induced microstructures over extended surface areas.

Application: Assessment of pattern uniformity, fine structural features and local variations for laser process optimization and industrial quality control.

Sample: Microstructured polymer photonic chip for microfluidic applications.

Optical configuration: 20× objective, NA 0.5, 405 nm illumination.

Inspection method: Non-contact optical imaging compared with conventional widefield microscopy using the same objective and illumination wavelength 

Demonstrated capability: Enhanced visibility and contrast of fine surface structures compared with the widefield image.

Application: Inspection of polymer microstructures, feature uniformity and manufacturing defects in photonic and microfluidic devices.