FGL610S 2 in x 2 in Square RG610 Colored Glass Filter; 610nm Longpass

The FGL610S is a 2 in x 2 in Square RG610 Colored Glass Filter, specifically designed for longpass applications with a cut-on wavelength of 610nm. This filter is sourced from the renowned optical component manufacturer, Thorlabs, and boasts a robust construction and high-quality coatings.

The filter is made from N-BK7 Schott glass, a popular choice in the optical industry due to its excellent optical properties and durability. It features a rectangular base shape, with a width and height of 50.8mm each, and a thickness of 2mm, making it suitable for various optical setups.

The FGL610S filter's primary function is to pass wavelengths longer than 610nm while blocking shorter wavelengths. This is achieved through the application of Thorlabs' proprietary coatings on both the front and back surfaces, denoted as 'tho fgl610'. These coatings ensure high transmission rates for longer wavelengths and effective blocking of unwanted shorter wavelengths.

The filter's physical data further highlights its capabilities. With a cut-on wavelength of 610nm, it allows for the efficient transmission of wavelengths longer than this value. The cut-off wavelength is 0, indicating that it blocks all wavelengths shorter than 610nm.

In terms of shape, the FGL610S filter is designed in a thin lens format, which can be beneficial in certain optical configurations. This filter is currently in stock and available for immediate purchase through the provided weblink.