393.37-0.1 OD4 Ultra Narrow Bandpass Filter

Ultra-narrowband optical interference filter with a 393.37 nm center wavelength (CWL), a 0.1 nm full-width at half-maximum (FWHM), and wide-range OD4 out-of-band blocking. This is a multi-cavity filter with steep edges, a flat top, and transmission that is greater than 70% at 393.37 nm. This ultra-narrowband filter is coated on a 1.98 mm thick Fused Silica substrate and mounted in a 25 mm (+0/-0.8 mm) diameter, 3.5 mm (± 0.1 mm) thick anodized aluminum ring. Alluxa ultra-narrow bandpass filters have the highest transmission and narrowest bandwidths currently available. And because they are hard-coated using our innovative SIRRUS? plasma deposition process, all Alluxa optical filters are highly durable and resistant to laser damage. Contact us for custom sizing options.