64-257 25 mm Dia. High Performance Laser Line Bandpass Filter; t=2mm 785nm

The 64-257 is a high-performance laser line bandpass filter, designed and manufactured by Edmund Optics. This filter, with a diameter of 25 mm, is specifically engineered for use with 785 nm lasers, making it an ideal choice for applications that require precise wavelength selection.

The filter is made from n-BK7 Schott, a high-quality optical glass known for its excellent transmittance and low auto-fluorescence. This material ensures high-fidelity light transmission, reducing signal loss and improving overall system performance. The filter's thickness is 2 mm, providing sufficient mechanical strength while maintaining minimal optical path differences.

The 64-257 filter features a thin lens shape, which is beneficial for applications where space is a constraint. The front and back surfaces of the filter are coated with EDM 47-495, a proprietary coating developed by Edmund Optics. This coating enhances the filter's performance by reducing reflection and increasing transmission, thereby improving signal-to-noise ratio.

The filter's physical data includes a center wavelength (CWL) of 785 nm, which is the wavelength at which the filter provides the highest transmission. This CWL is crucial for applications that require precise wavelength selection, such as laser spectroscopy, bio-imaging, and optical communication.

In terms of availability, the 64-257 filter is currently in stock, according to the vendor's website. Interested users can find more information and purchase this product via the provided weblink.