BSW22 Dia:0.5in 50:50 (R:T) IR Fused Silica Plate BS; Coating: 0.9-2.6 µm; t=3 mm

The BSW22 is a high-quality beam splitter (BS) offered by Thorlabs, designed for use in the infrared (IR) spectrum with a wavelength of 633 nm. This component is a circular thin beam splitter, featuring a diameter of 12.7 mm and a thickness of 3 mm, making it an ideal choice for applications where space is a constraint.

The BSW22 is made of fused silica, a material with a low coefficient of thermal expansion and high transmission in the UV, visible, and near-IR regions. This makes it suitable for use in environments with varying temperatures and in applications where high transmittance is required.

The beam splitter has a 50:50 reflection-to-transmission ratio, meaning it evenly splits incoming light between its reflected and transmitted paths. The front surface of the BSW22 is coated with a thin film coating, specifically the 'tho 50 uv bs 9002600' coating, which enhances its performance in the 0.9-2.6 µm wavelength range.

This beam splitter is available for purchase directly from Thorlabs, and the provided weblink indicates that it is currently in stock. With its robust design, high performance, and wide wavelength range, the BSW22 is a versatile and reliable choice for a variety of optical applications.