FBH800-40 Premium Bandpass Filter; Dia:25 mm; CWL=800nm; FWHM=40nm

The FBH800-40 Premium Bandpass Filter is a high-quality optical component designed for precise wavelength selection, manufactured by Thorlabs. This filter is circular in shape with a diameter of 25 mm and a thickness of 2 mm, making it compatible with a wide range of optical systems.

The filter is specifically designed for a central wavelength (CWL) of 800 nm, with a full width at half maximum (FWHM) of 40 nm. This means it allows light within a 40 nm range around the central wavelength to pass through while blocking other wavelengths. This feature makes it ideal for applications that require narrowband wavelength filtration, such as fluorescence microscopy, spectroscopy, and laser systems.

The FBH800-40 filter is coated on both the front and back surfaces with Thorlabs' proprietary coating, denoted as 'tho fbh800-40'. This coating enhances the filter's performance by reducing reflection and increasing transmission, thereby improving the overall signal-to-noise ratio of the system.

According to the vendor's information, this item is currently in stock, and you can find more details, including pricing and technical specifications, on Thorlabs' official website through the provided weblink.