Educational Materials

Multilayer optical thin-film filters play a critical role in applications ranging from biomedical and analytical instrumentation to advanced laser systems. Learn why thin-film coating technology has been a technological breakthrough in biotechnology and other fields. Learn More

Discover how the Semrock optical filters business was started back in 2000. Learn More

Multimodal nonlinear optical (NLO) imaging is a microscopy approach used in a variety of biomedical applications. It harnesses and integrates the unique capabilities of nonlinear processes such as multiphoton fluorescence, second- and third-harmonic generation (SHG and THG), and coherent Raman scattering (CRS) and combines them seamlessly into a single, unified microscopy platform. Learn More

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Thin-film silicon (Si) photovoltaics are a combination of amorphous and microcrystalline Si; monitoring the proportions via Raman spectroscopy and high-performance optical filters allows the cells to be optimized during manufacture. Learn More

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594-nm laser excitation can enhance our ability to analyze cells by flow cytometry. This laser wavelength fills a significant excitation gap between the now common 561-nm line and the red laser sources. Adding this wavelength to the excitation repertoire enables excitation of virtually any visible fluorescent probe for cytometric analysis. Learn More

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With carefully controlled absorption and scattering losses, high-reflectivity, low-loss dielectric mirrors enable demanding applications such as gravitational-wave detection and cavity ring-down spectroscopy. Learn More

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