43-636 25.4 mm Dia. Sapphire Protective Flat Window; t=2.25 mm Uncoated

The 43-636 is a 25.4 mm diameter uncoated sapphire window, featuring a thickness of 2.25 mm. This window, offered by Edmund Optics, is a flat window type with a circular base shape, designed to protect optical surfaces from damage and contamination while minimally affecting the light path.

The window is made of aluminum oxide (Al2O3), also known as sapphire, a material with a high Mohs hardness rating of 9, making it highly resistant to scratches and abrasions. Sapphire is also transparent across a wide spectral range, from the ultraviolet to the infrared, making this window suitable for a variety of applications.

The window is designed for use at a wavelength of 587.6 nm, and its geometry is that of a thin lens. However, it is important to note that this window does not have any coatings, which could affect its performance in certain applications.

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