Modification in Optical lever and Koenig’s method by replacing Telescope using LASER source

Abstract

The traditional optical lever and Y by Koenig's method involve using a telescope to observe small angular deflections. Replacing the telescope with a LASER-based system can achieve higher precision and simplify the experimental setup. LASER beams are collimated, with minimum divergence, and give very accurate measurements, and need No more efforts for alignment and focusing as with a telescope. The system becomes more compact and easier to handle. The displacement of the LASER spot on the screen can be measured with a ruler or digital image analysis. This displacement corresponds to the angular deflection of the mirror. Use a LASER as the source of a collimated beam. The LASER beam replaces the Telescope used in the optical lever and Koenig’s method setup.