NF980-41 Dia. 25 mm Notch Filter; CWL=980nm; FWHM=41nm

The NF980-41 is a notch filter with a diameter of 25 mm, designed for use in optical systems that require narrowband rejection around the central wavelength of 980 nm. This filter is sourced from Thorlabs, a reputable vendor known for its high-quality optical components.

The filter is made from UVFS material, identified by the Mal-1965 material ID. It features a thin lens shape, with a thickness of 3.5 mm, making it suitable for use in systems where space is a constraint. The notch filter is designed to block a specific wavelength range while allowing light at other wavelengths to pass through.

The NF980-41 has a center wavelength (CWL) of 980 nm, which is the wavelength at which the filter's transmission is minimized. The full width at half maximum (FWHM) of this filter is 41 nm, indicating the width of the notch at half the minimum transmission. This FWHM value suggests that the filter provides a relatively narrow rejection band, which can be beneficial in applications where stray light needs to be minimized.

The filter's coating is the same on both the front and back surfaces, identified as 'tho nf980-41'. This coating plays a crucial role in determining the filter's performance, including its transmission, reflection, and scattering properties.

According to the vendor's website, the NF980-41 is currently in stock, indicating its availability for immediate purchase and delivery. The product's web link is provided for users who wish to access more detailed information or place an order.