Gratings1 and holograms2 use patterned surfaces to tailor optical signals by diffraction. Despite their long history, variants with remarkable functionalities continue to be developed3,4. Further advances could exploit Fourier optics5, which specifies th
For quality control: Use scattering measurements to help diagnose defects in your manufacturing process that originate from elements in the optical system such as imperfections in optical surfaces or light reflections off mechanical elements. For optical simulation: Obtain real-world scattering data to in...
An optic cell 20 for use in the cavity of a high-power laser comprises an optic housing 22 which defines a first laser beam aperture 26. An optic element 32 such as a mirror or lens is disposed within the optic housing. A first indium layer 30 is between and in abutting contact with...
SAN FRANCISCO, Sept. 4 (Xinhua) -- Researchers at Stanford University have shown that without electricity, a system involving high-tech mirror-like optical surfaces can cool flowing water to a temperature below that of the surrounding air. Since 2013, Shanhui Fan, professor of electrical engineer...
H. et al. Digital wavefront measuring interferometer for testing optical surfaces and lenses. Appl. Opt. 13, 2693–2703 (1974). Lai, G. & Yatagai, T. Generalized phase-shifting interferometry. J. Opt. Soc. Am. A 8, 822–827 (1991). Article ADS Google Scholar Hettwer, A., Kranz,...
Versatile Profilometer Eliminates Blind Spots and Measures Glossy Surfaces View Catalog Price Experience Demo Play Capture Full Surface Data with 0.1 µm Resolution in Just 1 Second HDR Scanning Algorithm for Measurement of Even More Materials Automatic Rotation to Perform Measurements with No ...
"We often require extraordinary correction with many surfaces, and several very high-order aspheres, resulting in too many variables for typical lens design optimization. CODE V’s optimization tools, such asGlobal SynthesisandGlass Expert, make it possible to successfully design such systems." ...
If the thickness of the thin metal layer is such that kzm ⋅ dm≪1, the resulting symmetric configuration causes the same surface plasmon frequency to exist on both sides of the thin metal layer, and interaction then takes place between the electromagnetic fields of both surfaces. ...
Another example is the metallurgical or reflected light microscope which is used for the surfaces of materials, especially opaque ones. For metals, examination is often conducted when it is in an as-polished, or un-etched, condition, which reveals features such as corrosion, erosion, cracks, ...
The Fizeau-Laurent surface interferometer (see Figure) reveals departures of polished surfaces from a plane. The system was described by the French physicist A.-H.-L. Fizeau in 1862 and adapted in 1883 into the instruments now widely used in the optical industry. In the Fizeau-Laurent system...