Online monitoring device for micro-optics lens in semiconductor laser to be precisely adjusted and using method of online monitoring device

A monitoring device and laser technology, applied in the application field of laser technology, can solve the problems such as the inability to meet the precise control requirements of the divergence angle and directivity of semiconductor lasers, the inability to accurately monitor the mutual influence of the displacement axis and the rotation axis, etc., and achieve outstanding substantive characteristics. , The monitoring criterion is precise and reliable, and the effect of low divergence angle

Active Publication Date: 2014-11-19
江西中久激光技术有限公司
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AI Technical Summary

Problems solved by technology

At present, domestic and foreign monitoring systems for the precise assembly and adjustment of semiconductor laser micro-optical lenses cannot simultaneously monitor the six-axis variation of the micro-optical lens. The interaction between the axis and the rotation axis cannot meet the precise control requirements of the divergence angle and directivity of the semiconductor laser

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  • Online monitoring device for micro-optics lens in semiconductor laser to be precisely adjusted and using method of online monitoring device

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Embodiment Construction

[0023] In order to clearly illustrate the technical characteristics of this solution, the following describes this solution through a specific implementation and in conjunction with the accompanying drawings.

[0024] First, set the coordinate system: X direction is the slow axis direction of the semiconductor laser, Y direction is the fast axis direction of the semiconductor laser, and Z direction is the direction of the semiconductor laser beam. Fix the micro-optical lens to the six-axis adjustment frame and drive it with a DC power supply. The semiconductor laser emits light and adjusts the six-axis adjustment frame to perform preliminary alignment of the semiconductor laser.

[0025] A near-field beam splitter with a transmittance and reflectance ratio of 1:1 is placed on the preliminarily collimated semiconductor laser beam transmission path, and the angle between the near-field beam splitter and the incident laser beam is constrained within the range of (45±1)°.

[0026] Place ...

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Abstract

The invention provides an online monitoring device for a micro-optics lens in a semiconductor laser to be precisely adjusted and a using method of the online monitoring device. According to the technical scheme, the method comprises the steps that a CCD is adopted as a light spot data collecting component, near-field light spot data and far-field light spot data are monitored online at the same time during adjusting of the micro-optics lens based on the light beam splitting principle, the near-field CCD light spot data change serves as the optimal space position basis of a rotating axis of the micro-optics lens, the far-field CCD light spot data change serves as the optimal space position basis of a displacement axis of the micro-optics lens, and the fast and slow axis light beam divergence angle and directivity of the semiconductor laser can be precisely controlled. The online monitoring device has the advantages of being high in system integrity, precise and reliable in monitored judgment data and the like. The low-divergence-angle and high-directivity semiconductor laser obtained based on the online monitoring device can be applied to various fields such as pumping solid lasers, medical treatment and industrial machining.

Description

Technical field [0001] The present invention relates to the application field of laser technology, in particular to an on-line monitoring device for precise adjustment of micro-optical lenses in semiconductor lasers and a method of use thereof. Background technique [0002] In the prior art, due to the advantages of high electro-optical conversion efficiency, high reliability, and miniaturization of semiconductor lasers, it has been rapidly developed and widely used in laser pumping sources and direct applications, especially as solid-state lasers and fiber lasers. The pumping source of this technology promotes the rapid development of all-solid-state lasers. Due to the non-axisymmetric waveguide structure of the semiconductor laser, the divergence angle of the two axial directions is large and asymmetric, which seriously affects its brightness and beam quality. The precise control of the divergence angle and directivity is the prerequisite for the back-end application of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/62
Inventor 唐淳余俊宏郭林辉吕文强谭昊吕华玲高松信武德勇
Owner 江西中久激光技术有限公司
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