656.1-1 OD5 Ultra Narrow Bandpass Filter



656.1-1 OD5 Ultra Narrow Bandpass Filter


Ultra-narrowband optical interference filter with a 656.1 nm center wavelength (CWL), a 1 nm full-width at half-maximum (FWHM), and OD5 out-of-band blocking from 556 nm to 756 nm. This is a multi-cavity filter with transmission that is greater than 85% at 656.1 nm. This unmounted ultra-narrowband filter is coated on a 2 mm thick Borofloat® substrate and is 12.5 mm (± 0.1 mm) in diameter. 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.


Item Number 7262
Angle of Incidence 0 Degrees
Center Wavelength 656.1 nm Nominal
FWHM < 1.2 nm
Transmission Band(s) 656.1 nm > 85% T Absolute
Blocking Level OD5
Blocking Range(s)* OD5: 556 to 641 nm, 673 to 756 nm
Filter Design Multi-Cavity
Substrate Type Borofloat®
Dimensions 12.5 mm Diameter
Filter Thickness 2.0 mm
Assembly Type Unmounted
*Auxiliary blocking typical based on the displayed spectrum.
†For filters with less than 1nm bandwidth, measurement limitations may result in slight transmission variation. Please contact us for more information.

Availability: In stock


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