Signal and pumping laser hybrid integrated device

Abstract

The invention relates to a signal and pumping laser hybrid integrated device which is structurally characterized in that a plurality of multimode pump laser dies, at least one single-mode signal laser die and all optical path shaping lenses and 90-degree reflectors are mounted in a same laser shell and are coupled in a same output optical fiber. An output port of each single-mode signal laser die corresponds to the optical path shaping lens and the 90-degree reflector which are in a set, an output port of each pump laser die corresponds to the optical path shaping lens and the 90-degree reflector in another set, all the 90-degree reflectors are not overlapped with one another in space, and corresponding reflected light of all the 90-degree reflectors aligns with a same condenser lens and is coupled to the same output optical fiber to be outputted after passing through the condenser lens, wherein signal light is coupled to a fiber core of the output optical fiber, and pump light is coupled to the section of the output optical fiber. The signal and pumping laser hybrid integrated device structurally substitutes for a traditional complicated optical path system and is simpler in optical design, compact, reliable and stable in structure and excellent in performance.

Description

technical field [0001] The invention belongs to the field of semiconductor packaging and coupling, and relates to a hybrid integrated fiber-coupled semiconductor laser device of single-mode signal and multi-mode pump laser, in particular to a hybrid integrated device of optical fiber laser, signal of optical fiber amplifier and pump laser. Background technique [0002] Fiber laser has the advantages of excellent beam quality, high conversion efficiency, full optical path structure, and convenient maintenance. It is currently widely used in many industrial fields, such as: material cutting, drilling, welding, marking, etc. At present, the common method is to use double-clad fiber to obtain single-mode and quasi-single-mode laser with high beam quality. In the double-clad fiber, the core passes through the signal light and the fiber combiner, so that the cladding is coupled into the pump The pump light is then passed through the doped fiber to amplify the signal light. Among ...

AI Technical Summary

Problems solved by technology

The conventional optical path design makes the signal light source and the pump light source use independent semiconductor devices and couple through the optical fiber combiner, which makes the optical path too complex and bulky, and the circuit control is too cumbersome

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