Codex International has introduced custom lenses and windows made from zinc selenide, zinc sulfide, fused silica, germanium, silicon, and other materials for a myriad of applications.
Codex Internaitonal can be supplied plano-convex, plano-concave, and as wedged-windows in round, rectangle, and square shapes that can include steps, holes, and other special features. Made from ZnSe, ZnS, fused silica, germanium, silicon, and other materials, they are well suited for laser, imaging system, machine vision, and opto-mechanical applications.
Manufactured in sizes from 0.5″ to 5″ O.D. and supplied with various A/R coatings, as required, Codex Internaitonal Optics can be fabricated in a variety of thicknesses with typical dimensional tolerances of ±0.001 to ±0.005″. Conforming to ISO-10110 specifications, surface finishes of 10 waves to 1/10th wave flatness and 10-5 to 80-50 scratch-dig can be provided.applications.
Sum-Frequency Generation (SFG) is an optical phenomenon, wherein two photons impinge on a sample surface and generate a third photon at the sum of their frequency.Lire la suite
The word « lens » takes its name from the Latin word for lentil. Both are both hemispheric shapes bound together on their flat surface. So a « flat lens » sounds like a contradiction of terms. Yet that is exactly what Andrei Faraon is working on at California Institute of Technology’s Nanoscale and Quantum Optics Lab.Lire la suite