High-power laser module

By adopting multiple ring-shaped structures of light barrier rings in the high-power laser module, it blocks stray light and keeps the inner diameter unchanged when expanded by heat, the problem of rising ceramic core temperature is solved, the optical fiber is protected, and the stability and life of the laser are improved.

CN119674693APending Publication Date: 2025-03-21HUACHEN XINGUANG (WUXI) SEMICONDUCTOR CO LTD
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Patent Information

Application Number
CN202411903840.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-23
Publication Date
2025-03-21

AI Technical Summary

Technical Problem

When existing high-power lasers are operating, they will generate a lot of waste heat and stray light, causing the temperature of the ceramic core to rise and may burn the optical fiber.

Method used

A high-power laser module is designed, adopting a ring structure of multiple aura blocking rings. The aura blocking ring is arranged coaxially with the optical fiber, and the outer diameter is distributed in sequence from small to large, and the inner diameter is not less than its width to block stray light and keep the inner diameter unchanged when heated expansion, ensuring the coupling efficiency of the optical fiber.

Benefits of technology

It effectively reduces the heat received by the ceramic ferrule, reduces its expansion, protects the optical fiber, and improves the stability and life of the laser.

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Abstract

The invention relates to the technical field of lasers, in particular to a high-power laser module which comprises a shell and a light-emitting chip installed in the shell, a tail cap is arranged at the end of the shell, an optical fiber is arranged in the tail cap in a penetrating mode, the optical fiber is sleeved with a ceramic insertion core, and the ceramic insertion core comprises a ceramic core body and a light receiving face right facing the light-emitting chip. A plurality of light blocking rings located between the light-emitting chip and the ceramic ferrule are arranged in the shell, the light blocking ring close to the light-emitting chip is a front light blocking ring, the light blocking ring close to the ceramic ferrule is a rear light blocking ring, the inner diameter of the rear light blocking ring is not larger than the outer diameter of the front light blocking ring, and the inner diameter of the light blocking ring is not smaller than the width of the light blocking ring and larger than the diameter of the optical fiber. The outer diameter of the largest light blocking ring is not smaller than the diameter of the light receiving face. All the light shielding rings are matched to effectively shield the end part of the ceramic ferrule, so that the optical fiber coupling efficiency is guaranteed, the heat received by the ceramic ferrule is less, the expansion is smaller, and the optical fiber is protected.
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