This is a 33009FL01-520R Float Glass Plane Ruled Diffraction Grating, sourced from the reputable vendor MKS/Newport. The grating, which is available for purchase directly from their website, is currently in stock.
The grating is a Blazed Ruled Reflective type, with a rectangular base shape and a geometry that measures 25 x 25 x 6 mm. The material used for the grating is soda lime ru clear, and it features a coating on the front side, identified as nwr 53-520r-1131-1sp.
The grating is designed to operate at a wavelength of 588 nm. The physical data of the grating includes a blaze wavelength of 1000 nm, with 600 grooves per millimeter. The blaze angle is 17.5 degrees, and the orientation vector is x: 1, y: 0, z: 0. The grating is designed for first order operation, and the grating side is the front.
For more detailed information, please refer to the vendor's website or contact their sales team.