Plane Ruled Diffraction Grating, 600 g/mm, 1600 nm, 28.7°

Plane Ruled Diffraction Grating, 600 grooves per mm, 1600 nm nominal blaze wavelength (1st order Littrow), 28.7° nominal blaze angle

Plane Ruled Diffraction Grating, 600 grooves per mm, 1600 nm nominal blaze wavelength (1st order Littrow), 28.7° nominal blaze angle