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

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 ...

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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