The GR50-0305 is a Blazed Ruled Reflective Grating, manufactured by Thorlabs, with a base shape of a rectangle and dimensions of 50 x 50 x 9.5 mm. This grating is made of soda lime glass, specifically soda lime ru clear, and has a UV ruled reflective coating, denoted as tho gr13-0305 on the front surface.
The grating features 300 grooves per millimeter, with a blaze wavelength of 500 nm and a blaze angle of 4.3 degrees. The dispersion of this grating is 3.32, and it operates at an order of -1. The grating side is the front, and the orientation vector is along the x-axis.
This grating is designed to work with a wavelength of 588 nm, as indicated in the item data. The web link provided leads to Thorlabs' product page, where users can find more information about this item, including its current stock status.