TFAN-20S05-4 20 x 20 mm N-BK7 Aluminum Flat Mirror λ/4; t=5mm

OptoSigma offers the TFAN-20S05-4, a high-quality 20 x 20 mm N-BK7 aluminum flat mirror with a thickness of 5mm and a λ/4 (quarter-wave) coating. This mirror is designed for applications that require excellent reflectivity and precision.

The mirror's base shape is rectangular, making it suitable for various optical systems. The geometry includes a thickness of 5mm and dimensions of 20 x 20 mm, providing a sturdy and compact design. The mirror is made of N-BK7 Schott glass, a popular material in optical systems due to its excellent optical properties and chemical resistance.

The TFAN-20S05-4 features a front-side metallic coating, Opt Tfan Al Aoi 45, which enhances its reflectivity. This coating is specifically designed for use in the visible spectrum, with a central wavelength of 588nm. The λ/4 coating ensures minimal phase shift upon reflection, which is crucial for maintaining the wavefront integrity in interferometric applications.

The mirror's shape is classified as a thin lens, indicating that it has been precisely shaped and polished to meet high optical tolerances. This mirror is currently in stock and available for purchase through the OptoSigma website.