A semiconductor laser array control system and its working method
A laser array and control system technology, which is applied in the direction of semiconductor lasers, semiconductor laser devices, lasers, etc., can solve the problems of semiconductor laser arrays out of lock, to avoid partial lock problems, high coupling efficiency, and reduce vertical offset Effect
Active Publication Date: 2022-02-18
SUZHOU EVERBRIGHT PHOTONICS CO LTD +1
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Problems solved by technology
[0003] Therefore, the technical problem to be solved by the present invention is to solve the problem that the semiconductor laser array is partially out of lock in the application of external cavity locking in the prior art, so as to provide a semiconductor laser array control system and its working method
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[0025]The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, o...
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The invention provides a semiconductor laser array control system and a working method thereof, wherein the semiconductor laser array control system includes: a heat sink; a semiconductor laser array; a solder layer; a pressure applying device located on the semiconductor laser array; a near-field imaging lens, an image sensor and fast-axis collimating lens; pressure judging unit; feedback structure, the feedback structure is suitable for using a pressure device to apply pressure to the characteristic light-emitting chip during the package reflow process of the solder layer, until any jth 1 light-emitting chip and the jth 2 The distance between the light emitting chips in the direction of the fast axis is smaller than the threshold. The semiconductor laser array control system is beneficial to reduce the vertical offset between the light-emitting chips of the semiconductor laser array in the optical near-field centroid position caused by stress and other factors during the packaging process of the semiconductor laser array, which is conducive to obtaining better beam quality And the higher coupling efficiency is beneficial to avoid the partial lock-out problem of the semiconductor laser array in the application of external cavity locking.
Description
technical field [0001] The invention relates to the technical field of semiconductors, in particular to a semiconductor laser array control system and a working method thereof. Background technique [0002] Semiconductor lasers are widely used due to their wide wavelength range, high efficiency, and compact structure. Semiconductor lasers are often used for pumping lasers such as solid-state lasers and alkali metal lasers, and can also be used for direct semiconductor laser systems for grating external cavity spectral combining. . However, the beam quality and spectral characteristics of traditional semiconductor lasers are poor, and the direct output power and brightness are low. In order to enrich the application of semiconductor laser pumping, especially alkali metal laser pumping, etc., the output beam of semiconductor laser is required to have the characteristics of narrow linewidth. When the semiconductor laser array is locked in the external cavity, it is often nece...
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IPC IPC(8): H01S5/40H01S5/02375H01S5/0233H01S5/024H01S5/00
CPCH01S5/4081H01S5/02375H01S5/0233H01S5/02469H01S5/0071
Inventor 孙舒娟俞浩王俊周立李泉灵闵大勇廖新胜
Owner SUZHOU EVERBRIGHT PHOTONICS CO LTD