Ultra-Narrow Bandpass Optical Filters

Ultra-narrowband filters are ideal for use as laser line, laser cleanup, or laser excitation filters in applications such as fluorescence microscopy, flow cytometry, and DNA sequencing. They are also highly resistant to laser damage, which ensures that they will maintain a high level of performance for a long period of time.

Please see our webshop for the Alluxa catalogue of narrow and ultra-narrow bandpass filters. Depending on the wavelength ranges and requirements of your system, Alluxa narrowband interference filters can be custom designed to meet one or more of the following challenging specifications:

Up to 98% peak transmission
Up to OD10 blocking by design
CWL at any wavelength from the UV to the mid IR (~250 nm to 6.2 µm)
CWL tolerances as tight as 0.05 nm
FWHM bandwidths as narrow as 0.1 nm
TWE as low as 0.01 wave RMS / inch measured at 632.8 nm

fluorescence microscopy
flow cytometry
DNA sequencing