FB4500-500 Dia. 1 in IR Bandpass Filter; CWL=4.50 µm; FWHM=500nm

The FB4500-500 is a high-quality bandpass filter developed by Thorlabs, a leading vendor in the optical industry. This particular model is designed with a circular base shape, making it compatible with a wide range of optical systems. The filter is constructed from sapphire ow mal-1972, a material known for its exceptional optical properties and durability.

The FB4500-500 has a wavelength of 4500 nanometers, placing it in the infrared (IR) spectrum. It is designed to allow light within a specific range of wavelengths to pass through while blocking out other wavelengths. This is achieved through the use of advanced coating technology on both the front and back surfaces of the filter. The cut-on wavelength is 4250 nanometers, and the cut-off wavelength is 4750 nanometers, providing a full width at half maximum (FWHM) of 500 nanometers.

The filter has a diameter of 1 inch (25.4 millimeters) and a thickness of 3 millimeters, making it suitable for use in various optical applications. The physical data, including the cut-on and cut-off wavelengths, are engraved on the filter for easy identification. The filter's shape is that of a thin lens, further enhancing its versatility in optical systems.

According to Thorlabs' website, the FB4500-500 is currently in stock, ensuring quick delivery for those who need it. The product's web link is provided for easy reference and further information.