64-253 25 mm Dia. High Performance Laser Line Bandpass Filter; t=2mm 632.8nm

The 64-253 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 a 632.8 nm wavelength, making it an ideal choice for a variety of applications that require precise filtering within this range.

The filter is constructed from high-quality n-BK7 Schott material, a borosilicate glass known for its excellent optical properties. This material ensures high transmission and low absorption, contributing to the overall efficiency and performance of the filter. The filter's thickness is 2 mm, providing sufficient structural integrity while maintaining minimal optical path distortion.

The 64-253 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 47-494, a coating specifically designed to enhance the filter's performance and durability. This coating ensures high transmission at the specified wavelength and provides excellent environmental stability.

The filter's geometry, including its 25 mm diameter, is designed to accommodate a wide range of optical systems. The diameter is large enough to accommodate most beam sizes, while the thin profile ensures minimal interference with other optical elements.

In terms of physical data, the filter has a center wavelength (CWL) of 632.8 nm, which is the wavelength at which the filter provides the highest transmission. This CWL is ideal for helium-neon (HeNe) lasers, which are commonly used in various applications, including interferometry, holography, and alignment.

In conclusion, the 64-253 25 mm Dia. High Performance Laser Line Bandpass Filter; t=2mm 632.8nm is a high-quality, reliable, and efficient optical filter designed for precise wavelength filtering. Its robust construction, high-quality materials, and advanced coatings make it an excellent choice for a wide range of applications.