RSF-25C-561RU 25 mm Dia. Mounted Raman Longpass Edge Filter; t=3.5mm 561.4nm

The RSF-25C-561RU is a 25 mm diameter mounted Raman longpass edge filter, specifically designed for applications requiring a 561.4 nm cut-on wavelength. This filter is sourced from OptoSigma, a renowned vendor known for its high-quality optical components.

The filter is of the longpass type, which means it allows transmission of longer wavelengths while blocking shorter ones. This particular model has a cut-on wavelength of 561.4 nm, making it ideal for applications that require this specific wavelength transmission.

The filter is made from UVFS material, identified as MAL-1965 in the item data. This material is known for its excellent optical properties, making it suitable for a wide range of applications.

In terms of geometry, the filter has a diameter of 25 mm and a thickness of 3.5 mm. This thickness is crucial as it contributes to the filter's overall performance and durability.

The physical data of the filter indicates that it has a cut-on wavelength of 561.4 nm and a cut-off wavelength of 0 nm. This means that it starts transmitting light at 561.4 nm and continues to do so for longer wavelengths.

The filter's coating is another critical aspect. Both the front and back surfaces of the filter are coated with Opt RSF-561RU, a coating specifically designed to enhance the filter's performance.

Finally, the filter has a thin lens shape, which is often preferred in optical systems due to its compact design and minimal impact on the overall system's optical properties.