Optimal design method of free-form surface lens for beam shaping of pumping laser system

Abstract

The invention provides an optimal design method of a free-form surface lens for beam shaping of a pumping laser system. According to the method, based on comprehensive application of data collected bya light beam quality analyzer and functions of a Tracepro software surface light source generator, an analog simulation light source is established and is infinitely close to the real characteristicsof a pumping laser light source, so that errors introduced during subsequent analog simulation and optimization design of the polarization state of laser and a light beam shaping system (a free-formsurface lens and a collimating lens) can be avoided while analog simulation of a pumping laser system is realized; and the functions of a Scheme macro language in Tracepro software and an optimizationengine After-scheme macro language are comprehensively used, and an optimization channel is established by taking optimization variables (control points of the free-form surface lens) as a bridge, sothat automatic optimization design of the free-form surface lens can be realized, and troubles and a complex calculation process of importing and exporting a model are avoided.

Description

technical field [0001] The patent of the present invention relates to the field of extremely weak magnetic detection, specifically an optimization design method of a free-form surface lens used for beam shaping of a pumping laser system, which can realize efficient and uniform distribution of laser beams. Background technique [0002] The ultra-high-sensitivity inertial measurement device based on Serf state atoms can realize ultra-high-sensitivity inertial measurement, which greatly exceeds the sensitivity achieved by existing related measurement methods, challenges the limits of magnetic field and sensitivity, and enables human beings to obtain new tools for understanding the world. It mainly uses the pumping optical system to polarize atoms, so that the atomic spins are in a state that can be sensitive to angular velocity. Under the action of external angular velocity, the atomic spin state will change accordingly, and the angular velocity information is extracted by detec...

AI Technical Summary

Problems solved by technology

However, at present, the design of free-form surface lenses is realized by a combination of calculation, fitting, modeling, simulation, optimization, etc. The process is complicated and cumbersome, and the trouble of importing and exporting the model cannot be avoided; and the pumping laser system shaping system The lens group is mainly used, the system is lengthy and difficult to debug