T81-20X In Stock

The T81-20X by Newport is a Laser Beam Expander, designed to facilitate the precise shaping and focusing of laser beams. This advanced beam expander seamlessly integrates enhanced mounting and adjustability functionalities with the revered Tropel optical design, ensuring optimal performance. By proportionally reducing beam divergence as power increases, this beam expander extends the collimation range, resulting in a heightened collimation range. It is designed with a 1-32 accessory thread, allowing seamless attachment to compatible HeNe lasers. A distinguishing feature of this beam expander is its incorporation of precision beam centering adjustments, strategically employed to counteract minor deviations in the entering laser beam's alignment. This level of precision is particularly beneficial for applications such as aligning distant objects, extending collimation range for illumination purposes, and generating a compact spot at a considerable distance from the laser source. The T81-20X ensures a minimal focused spot size, even over extended distances, thanks to its superior performance in mitigating wavefront distortion, which is maintained at less than λ/4. The laser beam's optical lenses boast a specialized coating of magnesium fluoride, meticulously engineered for anti-reflective properties. This coating, optimized for a wavelength of 632.8 nm, guarantees an exceptional transmission rate exceeding 95%. This laser beam expander boasts continuous focus adjustment capabilities, along with an impressive 20X expansion ratio.