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

A curved lens and optimized design technology, applied in the field of extremely weak magnetic detection, can solve problems such as complex and cumbersome process, difficult debugging, and long system, and achieve the effects of simplified system, high-efficiency uniform illumination, and reduced optimization variables

Active Publication Date: 2020-11-06
ZHEJIANG LAB
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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

Method used

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing and according to the operation sequence of flow chart, the present invention will be further described:

[0030] Such as figure 1 As shown, the present invention provides a method for optimizing the design of a free-form surface lens for pumping laser system beam shaping, and the specific steps are as follows:

[0031] (1) Use a beam quality analyzer to test the pumped laser to obtain the size, shape, center position, azimuth and power intensity distribution information of the spot, and based on the Scheme macro language and surface light source generator function of the Tracepro software, the laser The light source is simulated; in this step, instead of directly selecting a Gaussian beam as an ideal light source to design the subsequent system, first use a beam quality analyzer to test the size, shape, center position, azimuth and power intensity distribution information of the spot and acquisition; secondly, based on the...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/00G02B27/09
CPCG02B27/0012G02B27/0955Y02E60/00
Inventor 郝剑翟跃阳韩邦成唐照建刘颖黄梓嫄
Owner ZHEJIANG LAB
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