The OPSQ-25S03-P is a 25 x 25 mm square optical parallel flat window, manufactured by OptoSigma. This uncoated window is made from UVFS material, specifically UVFS mal- 1965, and has a thickness of 3 mm.
The window is designed in a flat, rectangular shape, with dimensions of 25 mm in both the a and b directions. It is categorized as a thin lens due to its minimal thickness relative to its aperture.
The window is intended for use at a wavelength of 588 nm. It is currently in stock and available for purchase. Further information and purchasing options can be found on the OptoSigma website, using the provided weblink.