FGB37S 2 in x 2 in Square BG40 Colored Glass Bandpass Filter; 335-610nm

The FGB37S is a 2 in x 2 in Square BG40 Colored Glass Bandpass Filter, designed and manufactured by Thorlabs. This filter is specifically engineered to transmit light within the 335-610nm wavelength range, while effectively blocking light outside this spectrum.

The filter is made from high-quality n-bk7 Schott glass, a material known for its excellent optical properties and durability. It features a rectangular shape, with a width and height of 50.8mm each, and a thickness of 2mm, making it suitable for various optical applications.

The FGB37S filter is coated on both the front and back surfaces with a specialized coating, denoted as 'tho fgb37'. This coating enhances the filter's performance, ensuring optimal transmission within the specified wavelength range and minimal reflection.

The physical data of the filter includes a cut-on wavelength of 335nm and a cut-off wavelength of 610nm. This means that it begins to transmit light at 335nm and stops transmitting at 610nm. This characteristic makes it an ideal choice for applications that require precise wavelength selection.

In terms of geometry, the filter is designed in the shape of a thin lens, which can be beneficial in certain optical setups. The filter is currently in stock and available for purchase through the Thorlabs website, as indicated by its weblink status.