1645.7-2 OD2 Ultra Narrow Bandpass Filter
1645.7-2 OD2 Ultra Narrow Bandpass Filter
- Specifications
- Description
Specifications
Additional information
Angle of Incidence | 0 Degrees |
---|---|
Filter Design | Multi-Cavity |
FWHM | < 2.3 nm |
Center Wavelength | 1645.7 nm Nominal |
† Transmission Band(s) | 1645.7 nm > 90% T Absolute |
Blocking Level | OD2 |
* Blocking Range(s) | OD2: 1654 to 1800 nm, 400 to 1637 nm |
Dimensions | 25.0 mm Diameter |
Substrate Type | N-BK7 |
Filter Thickness | 2.0 mm |
Assembly Type | Anodized Aluminum Ring |
Assembly Thickness | 3.5 mm |
*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.
Description
Description
Ultra-narrowband optical interference filter with a 1645.7 nm center wavelength (CWL), a 2 nm full-width at half-maximum (FWHM), and wide-range OD2 out-of-band blocking from 400 nm to 1800 nm. This is a multi-cavity filter with steep edges, a flat top, and transmission that is greater than 90% at 1645.7 nm. This ultra-narrowband filter is coated on a 2 mm thick N-BK7 substrate and mounted in a 25 mm (+0/-0.1 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.
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