Educational Materials

In this paper we discuss various important characteristics of hard-coated thin-film interference filters, such as high light throughput, steep edges, and high out-of-band blocking, all of which require careful consideration when designing and manufacturing optical filters for NLO imaging applications. Learn More

Optical filters play a vital role in obtaining maximum performance from complex, expensive, laser-based microscopes and it only makes sense to invest in optical filters that match the performance of the imaging system. Learn More

Many applications benefit from tunable optical filters with the spectral and two-dimensional imaging performance characteristics of thin-film filters and the center wavelength tuning flexibility of a diffraction grating. Learn More

Recent advances in thin-film filter technology have enabled dramatic improvements in the performance of filters for laser-based analytical instrumentation. Learn More

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

Optical edge filters are critical to the performance of Raman detection systems. This article describes two families of long‐wave‐pass (LWP) edge filters that Semrock has developed specifically for Stokes‐shift backscattered Raman signal detection systems. These filters are used in commercial Raman systems for polymer science, thin film analysis, geoscience, and the pharmaceutical industry Learn More

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

Increasingly popular, total-internal-reflection-fluorescence (TIRF) microscopy systems prefer lasers for excitation because of their spectral purity and brightness. But the use of lasers can restrict other TIRF system components. Clearing these hurdles requires some careful considerations. Learn More