Light-induced atomic desorption in a compact system for ultracold atoms

Area of Science:

• Atomic physics
• Laser-induced processes
• Surface science

Background:

• Light-induced atomic desorption (LIAD) is used to control alkali vapor pressure in vacuum chambers.
• Modulating vapor pressure allows for improved loading and longer lifetimes of trapped atom samples in cold atom experiments.

Purpose of the Study:

• Analyze LIAD of rubidium atoms on pyrex for cold atom applications.
• Determine the intensity dependence of LIAD and its impact on trapped atom numbers.
• Quantify a figure of merit for LIAD utility and optimize it for experimental conditions.

Main Methods:

• Experimental investigation of LIAD intensity dependence.
• Application of a rate-equation model to fit experimental data.
• Quantification and optimization of a figure of merit for LIAD.

Main Results:

• The study provides an analysis of LIAD for rubidium on pyrex.
• A rate-equation model accurately predicts the increase in trapped atom number with LIAD intensity.
• A figure of merit for LIAD utility is quantified and optimization strategies are presented.

Conclusions:

• LIAD is a valuable technique for modulating alkali vapor in cold atom experiments.
• Understanding LIAD intensity dependence and optimizing experimental parameters enhances its application.
• The findings contribute to improved control and efficiency in cold atom experiments.