RSF-25C-780RU 25 mm Dia. Mounted Raman Longpass Edge Filter; t=3.5mm 780nm

The RSF-25C-780RU is a 25 mm diameter mounted Raman longpass edge filter, designed and manufactured by OptoSigma. This filter is specifically engineered for applications that require the efficient blocking of light below 780 nm, while allowing light at and above this wavelength to pass through.

The filter boasts a circular shape, with a thickness of 3.5 mm, making it a robust and durable option for various optical setups. It is made from UVFS Mal-1965, a material known for its excellent optical properties and stability.

The RSF-25C-780RU features a cut-on wavelength of 780 nm, meaning it begins to transmit light at this point. Conversely, it has a cut-off wavelength of 0 nm, indicating that it blocks all wavelengths below 780 nm. This makes it ideal for Raman spectroscopy and other applications where precise wavelength selection is crucial.

The filter's coating is another notable feature. Both the front and back surfaces are coated with Opt RSF-780RU, a coating specifically designed to enhance the filter's performance and durability. The filter's shape is that of a thin lens, further adding to its versatility and ease of integration into various optical systems.

According to the vendor's information, the RSF-25C-780RU is currently in stock, and users can directly purchase it from the OptoSigma website using the provided weblink.