Coherent Manipulation of Optical Force Birefringence in Chiral Atomic Medium

Abstract

The birefringence of optical forces are controlled and manipulated by application of laser driving fields in the four level chiral atomic medium. Optical forces in the form of left and right circularly polarized (LCP/RCP) vectors field arrows and its reported magnitudes is significantly controlled and investigated with spatial, detuning and Rabi frequency coordinates. Optical force magnitude and vectorial form result through the use of azimuthally polarized Laguerre Gaussian (LG) vortex lasers beam and their dependence on orbital angular momentum. Optical force magnitude depends on the probe and control laser fields detuning and Rabi frequencies and phases. The optical forces LCP and RCP vector fields are also fluctuating functions of various orbital, magnetic and spin quantum numbers of controlled laser driving fields in chiral atomic medium. The minimum magnitude of optical force measured is 0.05 Pico Newton and maximum optical force magnitude is to be 4.0 Pico Newton both for LCP and RCP beams in chiral atomic medium. The modified results of this manuscript is useful for nano science and optical tweezers technology.