A GaAs-based high-power conical laser chip with high power and high beam quality and a preparation method thereof

CN116683284BActive Publication Date: 2026-06-05Shandong Huaguang Optoelectronics Co. Ltd.
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Shandong Huaguang Optoelectronics Co. Ltd.
Filing Date
2022-02-23
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing conical semiconductor lasers suffer from unstable beam quality at high power, easily exhibiting filamentary emission. Furthermore, traditional improvement methods are costly, have poor heat dissipation, and are difficult to encapsulate and couple, thus failing to effectively improve beam quality and output power.

Method used

By employing a wide stripe region with microstructures at the edges and a ridge form in the magnification region, mode selection is achieved through edge filtering, and side light limitation is performed by combining material refractive index differences to avoid mode width cutoff, thus achieving a combination of high power and high beam quality.

Benefits of technology

It significantly improves output power, reduces horizontal divergence angle, extends chip lifespan, and enhances laser reliability and beam quality.

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Abstract

The application relates to a GaAs-based high-power conical laser chip with high power and high beam quality and a preparation method thereof. The GaAs-based high-power conical laser chip provided by the application changes the ridge form of a traditional conical laser single-mode area and a conical amplification area into the ridge form of a wide-bar area with a microstructure at an edge and a conical amplification area. The wide-bar area with the microstructure at the edge realizes mode screening through edge filtering, no longer adopts a mode width cutoff method, realizes the purpose of power promotion, and the beam quality is not affected by the length of the wide-bar area with the microstructure at the edge. The length of the wide-bar area with the microstructure at the edge can be controlled to realize the regulation of the power size, and then the high-power and high-beam quality requirements of the conical laser are realized.
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