A beamsplitter is often described simply as an optical component that divides one incident beam into transmitted and reflected paths. In an actual optical system, however, an important question comes first: Should the splitting behavior depend on polarization? That question separates two major categories: polarizing…
Edge steepness describes how quickly an optical filter transitions between its passband and its blocking region. It is measured as the wavelength interval between two defined reference points on the transition — for example between the 50% transmission point and the wavelength where transmission drops…
Two narrowband filters may both be described as “850 nm bandpass filters” or “1064 nm narrowband filters,” yet their manufacturing cost can differ substantially. The reason is that center wavelength alone does not define the difficulty of a narrowband filter. A filter becomes more demanding…
