Thorlabs offers wedged windows fabricated from N-BK7, UV Fused Silica, Calcium Fluoride, Magnesium Fluoride, Zinc Selenide, Sapphire, Barium Fluoride, Silicon, and Germanium. Our wedged laser windows have a wavelength-specific AR coating centered around commonly used laser wavelengths on both faces. Our UV fused silica wedged windows are offered with or without a broadband AR coating on both faces, while our N-BK7 and Silicon wedges are available uncoated. In addition, our wedged beam samplers are available with a broadband AR coating on one face. For more information on these substrates, please visit our Optical Substrates page.