UFBS8020 1in Dia. 80:20 (R:T) Infrasil Low-GDD Ultrafast Beamsplitter, 600-1500nm, 45° AOI

The UFBS8020 is a 1-inch diameter beamsplitter from Thorlabs, designed for ultrafast laser applications. This beamsplitter features a 80:20 (R:T) splitting ratio, meaning that 80% of the incident light is reflected while 20% is transmitted. It is designed for use with wavelengths between 600nm and 1500nm, making it suitable for a wide range of laser applications.

The beamsplitter is made from Infrasil, a type of fused silica known for its low coefficient of thermal expansion and high optical transmission. The Infrasil is further enhanced with a low group delay dispersion (GDD) coating, which reduces the distortion of ultrashort laser pulses. This makes the UFBS8020 ideal for use in applications such as femtosecond laser systems, where maintaining the integrity of ultrafast laser pulses is crucial.

The UFBS8020 has a 45° angle of incidence (AOI), which is the angle at which the beam strikes the beamsplitter. This AOI is designed to maximize the efficiency of the beamsplitter while minimizing the risk of beam distortion. The beamsplitter has a circular geometry with a diameter of 1 inch (25.4mm) and a thickness of 4mm.

The UFBS8020 is currently in stock and available for purchase from Thorlabs. For more information, including detailed specifications and pricing, please visit the Thorlabs website using the provided weblink.