Optical Stark decelerator for cw molecular beam with a quasi-cw semi-Gaussian laser beam

TL;DR

This paper introduces an optical Stark decelerator using a quasi-cw semi-Gaussian laser beam to slow continuous molecular beams, demonstrating effective deceleration and energy reduction through Monte-Carlo simulations.

Contribution

The study presents a novel optical Stark deceleration scheme employing a semi-Gaussian laser beam for continuous molecular beams, with detailed analysis of its effectiveness and dependence on beam parameters.

Findings

Achieves approximately 9.33% kinetic energy loss in cw ND3 molecular beams.

Demonstrates the deceleration scheme's efficiency via Monte-Carlo simulations.

Shows the deceleration effect depends on the semi-Gaussian beam's border width.

Abstract

We propose a promising scheme to decelerate a cw filtering out molecular beam using a red-detuned quasi-cw semi-Gaussian laser beam. By using Monte-Carlo simulation method, we demonstrate this optical Stark deceleration scheme, and study its decelerated dynamic process for a cw ND3 molecular beam as well as the dependence of the deceleration effect on the border width of the semi-Gaussian beam. Our study shows that the proposed scheme can be used to efficiently slow a cw ND3 molecular beam, and obtain a relative average kinetic-energy loss of 9.33% by using a single semi-Gaussian beam with a well depth of 7.3 mK.