88-427 10 mm Dia. Precision Sapphire Flat Window; t=1 mm Uncoated

The 88-427 is a 10 mm diameter precision sapphire flat window, with a thickness of 1 mm, uncoated. This optical window is sourced from Edmund Optics, a reputable vendor known for its high-quality optical components. The window is designed with a flat shape, making it suitable for a wide range of applications where minimal optical distortion is required.

The window is made of sapphire, a material with the chemical formula Al2O3, which is characterized by its exceptional hardness, chemical resistance, and high thermal conductivity. Sapphire is also transparent across a wide spectral range, from the ultraviolet to the infrared, making this window suitable for use in various optical systems.

The window's geometry includes a diameter of 10 mm and a thickness of 1 mm. The thin lens shape of the window ensures minimal optical power, making it ideal for use as a protective window or an optical interface in various systems.

Notably, this window is uncoated, meaning it does not have any anti-reflective or other coatings applied to its surfaces. This can be advantageous in certain applications where the natural reflectivity of the sapphire surface is desired, or where the introduction of a coating could potentially degrade the optical performance.

The window's wavelength is specified as 587.6 nm, which is the wavelength of the sodium D line and is often used as a reference wavelength in optical systems. This suggests that this window is designed for use in visible light applications, although its wide spectral transparency makes it suitable for use in other regions of the spectrum as well.