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NF561-18 Dia. 25 mm Notch Filter; CWL=561nm; FWHM=18nm

NF561-18 Dia. 25 mm Notch Filter; CWL=561nm; FWHM=18nm

Type
Filter
Subtype
Notch Filter
Brand
Thorlabs
Product webpage
Thorlabs products in the 3DOptix catalog

Properties

Shape
Circular
Diameter
25 mm

Material

Name
UVFS
Dispersion Equation
Sellmeier
n (λ)
1.459459512195785
λ
561 nm
B1
0.6961663
C1
0.004679148 μm2
B2
0.4079426
C2
0.013512063 μm2
B3
0.8974794
C3
97.93400254 μm2

NF561-18 Dia. 25 mm Notch Filter; CWL=561nm; FWHM=18nm

The NF561-18 is a notch filter with a diameter of 25 mm, designed for use in optical systems that require precise wavelength control. This filter is sourced from Thorlabs, a leading vendor in the field of optical components. The NF561-18 is specifically designed for use at a central wavelength (CWL) of 561 nm, with a full width at half maximum (FWHM) of 18 nm.

The filter is made from UVFS material, identified by the Mal-1965 material ID. It has a thin lens shape, which is designed to minimize optical aberrations and ensure optimal performance in your system. The filter's geometry includes a thickness of 3.5 mm, which contributes to its durability and stability.

The NF561-18 features a coating on both the front and back surfaces. This coating, identified as tho nf561-18, is specifically designed to enhance the filter's performance at the specified wavelength. The filter is currently in stock and available for immediate purchase through the Thorlabs website, as indicated by its valid weblink status.

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