Linear array laser coherent mirror

A linear array laser and optical waveguide technology, applied in the direction of lasers, laser components, phonon exciters, etc., can solve the problems of poor coherence, poor stability, and high cost of linear array lasers, and achieve high beam quality, high coherence efficiency, and The effect of improving stability
CN104300350BActive Publication Date: 2018-01-02吉光半导体科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
吉光半导体科技有限公司
Publication Date
2018-01-02

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Abstract

The linear array laser coherent mirror and the preparation method thereof belong to the technical field of laser coherent coupling, aiming at solving the problems of poor coherence, poor stability, low power and high cost of the linear array laser existing in the prior art. The linear array laser coherent mirror of the present invention includes n diffraction gratings and n+1 optical waveguides which are connected alternately, and waveguide reflection structures are prepared on both sides of the structure formed by the diffraction gratings and optical waveguides. The preparation method of the linear array laser coherent mirror, firstly, the optical waveguide is prepared by the crystal growth method or the thin film manufacturing method; secondly, the optical waveguide prepared in step 1 is prepared by the growth method or the etching method and the actual application of the linear array laser. Diffraction gratings with the same interval and duty ratio; finally, a waveguide reflective structure that can efficiently reflect the optical mode in the waveguide is fabricated on the outermost optical waveguide by etching. The invention utilizes the diffraction grating to realize mutual injection and phase locking of photons, thereby realizing optical coherence, improving light brightness and narrowing line width.
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Description

technical field

[0001] The invention belongs to the technical field of laser coherent coupling, and in particular relates to a line-array laser coherent mirror for performing phase-locking and coherence on each light-emitting unit in a line-array laser and a preparation method thereof. Background technique

[0002] Compared with single-tube lasers, linear array lasers are widely used because they can obtain higher power. However, with the development of science and technology, more and more fields require high beam quality, high brightness, narrow linewidth, and high coherence. The demand for high-power lasers continues to grow.

[0003] For general linear array lasers, since the photons between each light-emitting unit in the linear array cannot be injected into each other, there is no coherence, which leads to wide laser linewidth, poor mode characteristics, large far-field divergence angle, and high Low, can not realize the shortcomings of phase locking, which limits its...

Claims

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