FB1250-10 Dia:1 in Bandpass Filter; CWL=1250 +-2nm; FWHM=10 +-2nm

The FB1250-10 is a Bandpass Filter from Thorlabs, a leading vendor in the optical industry. This filter, with the catalog number FB1250-10, is specifically designed for applications that require narrowband transmission at a center wavelength of 1250 nanometers. The filter's full width at half maximum (FWHM) is 10 +-2nm, indicating a sharp transmission band.

The filter is circular in shape, with a diameter of 1 inch (25.4mm) and a thickness of 3.5mm, making it compatible with various optical systems. It is made of soda lime ru clear material, ensuring high optical quality and durability.

The FB1250-10 filter's coating is a crucial component of its design. Both the front and back surfaces are coated with the same coating (tho fb1250-10), which is specifically designed to enhance the filter's performance at the specified wavelength. The filter's cut-on wavelength is 1245nm, and the cut-off wavelength is 1255nm, providing a narrow transmission band around the central wavelength.

This filter is available for purchase directly from Thorlabs' website, and the link provided in the item data indicates that it is currently in stock. The filter's detailed specifications and purchase information can be found at https://www.thorlabs.com/thorproduct.cfm?partnumber=FB1250-10.