This is a 33025FL01-310H Reflective Grating from MKS/Newport, a leading vendor in the optical industry. The grating is rectangular in shape with dimensions of 12.5 x 12.5 x 6 mm, making it suitable for various optical applications. The grating is made of soda lime ru clear glass, a common material in optical components due to its excellent transparency and durability.
The grating features a coating of nwr 53-310h-5469-1 on the front side, which is specifically designed for this type of grating. The blaze wavelength is 300 nm, and it has 1800 grooves per millimeter. The orientation vector is (1, 0, 0), meaning the grooves are parallel to the x-axis. The grating is designed to operate in the first order, and the grating side is the front side.
According to the vendor's website, this item is in stock, and you can find more information and possibly purchase it from the following link: https://www.newport.com/p/33025FL01-310H.