A Pigtail Side Pumping Coupling Device for Ytterbium-doped Double-clad Semiconductor Lasers

Abstract

The invention discloses a tail fiber side pumping coupling device of an ytterbium-doped double-clad semiconductor laser. Pumping coupler, the invention realizes the use of semiconductor lasers and pumping couplers to form the effect of concentrated beamlines and dense ends, so that the inner cladding of the double-clad light is transmitted along the axial direction of the optical fiber, and then cooperates with the flat The contra-convex lens capsule of the capsule daylighting device, which contains the edge-wrapped optical glue, forms the anti-reflection effect of the pump light, and also strengthens the refractive index to reduce the reflection loss of the interface, forming a high-efficiency total reflection focusing phenomenon of the pump light, and then cooperates with the The ytterbium-doped structure improves the large mode field area and quantum efficiency of the semiconductor laser, realizes the strengthening of the pump light effect of the gain medium, improves the permeability of the semiconductor gate, and prevents reflection interference, forming a refraction end to concentrate light and extend the terminal range Effect.

Description

technical field [0001] The invention relates to a tail fiber side pump coupling device of an ytterbium-doped double-clad semiconductor laser, which belongs to the field of semiconductors. Background technique [0002] Optical fiber is a necessary high-efficiency optical and electrical connection equipment for data networks and smart furniture, and the terminal at the end of the optical fiber needs a coupling circuit to connect the circuit board and the semiconductor to form the effect of concentrated output light or centralized collection of electrical signals, so that the semiconductor can use lasers In the medium time, it can be combined with optical fiber to form the increase of semiconductor light transmission. The shortcomings of the current technology that need to be optimized are: [0003] The beamline concentration of conventional semiconductor lasers is low, and the processing of light guide coupling is simple, which will cause the coupling beamline to be uncorrecte...

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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a pigtailed fiber side pumping coupling device for an ytterbium-doped double-clad semiconductor laser, so as to solve the problem of low beamline concentration of conventional semiconductor lasers and simple processing of light guide coupling. It will cause the coupling beamline but not correct the deflected line-end light source, causing the light to scatter, unnecessary irradiation on the inner wall of the path, causing diffuse reflection to interfere with the laser effect, and causing the laser to shrink into the irradiation range due to the interference of deflected light in the later stage. The situation will cause the semiconductor gate in the laser to be disordered, resulting in the phenomenon of dim light source offset by internal reflection, which will greatly halve the use efficiency of the equipment, affect the calibration reference line of the interior decoration of construction personnel, and cause a small angle bend to the far light end of the laser. Make the calibration deviate and skew, resulting in labor-intensive later renovation and correction problems

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