Optical fibre coherence coupling method for large power semiconductor laser array and optical fibre shaper

A laser array and semiconductor technology, applied in the laser field, can solve problems such as ineffective coupling of beams and interruption of periodic structures, and achieve the effect of improving the degree of phase-locked coherence of the external cavity, reducing loss, and realizing parallel coupling

Inactive Publication Date: 2006-02-22
JIAXING DAHE LASER EQUIP
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Problems solved by technology

Affected by "Smile", the periodic structure of the semiconductor laser array is interrupted, and the light beam fed back from the external cavity cannot be effectively coupled into the semiconductor light emitting unit

Method used

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  • Optical fibre coherence coupling method for large power semiconductor laser array and optical fibre shaper
  • Optical fibre coherence coupling method for large power semiconductor laser array and optical fibre shaper
  • Optical fibre coherence coupling method for large power semiconductor laser array and optical fibre shaper

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing, specifically illustrate the application of the present invention:

[0023] Fabrication of the optical fiber shaper: Align the fixed sleeve 3, first remove the coating layer from one end of the optical fiber to become a bare fiber, arrange the bare fibers on the V-groove bottom plate, and cover the cover plate (the shape of the cover plate can be a flat cover plate, V groove-shaped cover plate), and then apply curing glue to fix the optical fiber (for a two-dimensional semiconductor laser array, the fixed optical fiber needs to be fixed layer by layer); rearrange one end of the fixing sleeve 5, and remove the coating layer into a bare fiber, the optical fibers are arranged in two dimensions and fixed in the rearrangement fixing sleeve with glue, and the end face of the rearrangement fixing sleeve 5 can be made into a regular quadrilateral, see Figure 4 , can also be made into a circle, see Figure 5 . The optical fiber s...

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Abstract

The invention relates to a fiber coherence coupling method of high power semi-conductor laser array and the fiber-shaping device, belonging to the laser technique field. The characters of invention comprise: guiding the fiber into the space between the semiconductor laser array and the external-cavity glass; using microlens to compress the fast axis divergence angle of each luminous unit, to make N luminous units be coupling to N fibers one to one; utilizing the flexibility of fiber, rearranging the fiber on the another end of fiber into the fiber array with bidimensional periodic time. The designed fiber shaping device is arranged between the semi-conductor laser array (1) and the external-cavity glass (6), comprising aligning hub (3), fiber (4) and rearrangement hub (5); the compressed fiber, via the microlens, is one-to-one coupling to the fiber which is fixed in the aligning hub, while the rearrangement hub rearranges and fixes another end of with bidimensional fiber. The invention reaches the rearrangement of luminous light beam and improves the coherence coupling of high power semi-conductor laser array.

Description

technical field [0001] The invention relates to a method and a device for performing beam shaping on a high-power semiconductor laser array through an optical fiber, realizing phase-locking of an external cavity and improving beam quality, and belongs to the field of laser technology. Background technique [0002] Semiconductor laser arrays (including one-dimensional semiconductor laser arrays and two-dimensional semiconductor laser arrays, namely semiconductor laser stacks (stack), stacked arrays are composed of one-dimensional arrays stacked together) are effective technologies for achieving high power output way. Since each light-emitting unit of the semiconductor laser array (DLA) is incoherent, the output of the laser is also incoherent in space, and the beam quality is poor. External cavity phase-locked coherent coupling technology forms a new resonant cavity outside the semiconductor laser array to lock the phase of each laser unit, and can obtain coherently coupled ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/40H01S5/00G02B6/42
Inventor 王智勇左铁钏马春雨初新俊
Owner JIAXING DAHE LASER EQUIP
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