FB1570-12 Dia:1 in Bandpass Filter; CWL=1570 +-2.4nm; FWHM=12 +-2.4nm

The FB1570-12 is a Bandpass Filter from Thorlabs, a leading vendor in the optical industry. This filter is designed with a circular base shape and a diameter of 25.4 millimeters, making it compatible with a wide range of optical systems. The filter has a thickness of 3.5 millimeters, providing sufficient structural integrity while maintaining a low profile.

The FB1570-12 filter is specifically designed to operate around the wavelength of 1570 nanometers, with a Full Width at Half Maximum (FWHM) of 12 nanometers. This precise wavelength selection is achieved through a careful balance of cut-on and cut-off wavelengths, which are 1564 nanometers and 1576 nanometers respectively. This narrow bandwidth is ideal for applications that require high spectral resolution and rejection of out-of-band light.

The filter's coating is a critical component, enhancing its performance and durability. Both the front and back surfaces of the filter are coated with the same coating, denoted as 'tho fb1570-12'. This coating ensures optimal transmission at the desired wavelength while providing excellent environmental stability.

The FB1570-12 filter is available for purchase directly from Thorlabs' website, with the current status indicating that it is in stock. This availability, combined with its impressive specifications, makes the FB1570-12 an excellent choice for researchers and engineers in need of a reliable and high-performance Bandpass Filter.