Study On Frequency Stabilization Of Laser Using In Cooling Atoms And The Design Of The System

In the past over ten years, laser cooling and trapping of atoms have played an important role in precision measurement. Because of the wide applications in measuring gravity on mobile vehicles,the technology of atom interferometer based on cold atoms has developed rapidly. The purpose of this thesis is to realize an atom interferometer, and measure the gravity accurately.Chapter 1 introduces the history of laser cooling and trapping atoms and it is applications. Chapter 2 and chapter 3 present the details of theoretical analysis of the atom interferometer and some experimental setups. I also present some methods that we implemented at the atom interferometer experiment. The main content is dedicated to a new method of frequency stabilization. Chapter 4 describes a beam collimator designed by me. I do some research on the compact laser system, too. In the last chapter, there is a conclusion of the thesis. And I also give some proposals for the future.This thesis focus on three aspects:a new technique of saturation absorption spectroscopy, the original-innovation design of beam collimator and the study on integrated laser system.