Experimental realization of the Tilted Wave Fizeau Interferometer measuring an aspheric SUT. Thelightpaths are highlighted in red. The monolithic point source array used for illumination is shown in ...

Measuring high aspect ratio and composite micro-trenches without damage is critical for advanced microfabrication, yet conventional coherence scanning interferometry often suffers from a low signal-to ...

Earth's atmosphere is an impediment to astronomical observations. Not only is cloudy weather a problem, but temperature fluctuations in the atmosphere mean that ground-based telescopes require ...

One of the biggest challenges for nanoscale fabrication is how to measure devices on such a minute scale. As the semiconductor industry demands ever smaller devices, the need for reliable, robust ...

Discover a compact solution for full-field optical vibration measurement with VibroScan QTec. This video demonstrates how its patented multi-path interferometry delivers high data quality and how the ...

Optical Surfaces Ltd has received an order from Armstrong Optical, a leading UK supplier of optical metrology instruments, to supply high specification transmission and reference flats for a custom ...

The nature of quantum particles has long puzzled scientists. While single-particle interference suggests that a photon can behave like a spread-out wave, a whole photon is only ever detected in one ...

The bandgap defines how insulators absorb light and conduct electricity. XUV high-harmonic interferometry now lets researchers track its femtosecond dynamics. (Nanowerk News) The bandgap, i.e. the ...

In order to push the performance of optical systems, aspheric- and freeform surfaces are used in state-of-the-art optic design for correcting aberrations. The production of these complex-shaped ...