The GTU13-08 is a UV Transmission Grating offered by Thorlabs, designed with a base shape of 12.7 x 12.7 x 2 mm (width x height x depth) and a UVFS material ID. This grating is specifically coated with "tho gtu13-08 1" on the front side.
The grating features 830 grooves per millimeter, with a blaze angle of 19.4 degrees, optimizing its performance for the specified wavelength of 588 nm. The orientation vector is defined as (1, 0, 0), indicating a horizontal orientation. The grating order is 1, and it is designed to be used with the grating side facing the back.
According to the vendor's website, this item is currently in stock, ensuring quick delivery for your optical system needs. For more information, you can refer to the provided weblink: https://www.thorlabs.com/thorproduct.cfm?partnumber=GTU13-08