Semiconductor laser array control system and working method thereof
A laser array and control system technology, applied in semiconductor lasers, semiconductor laser devices, lasers, etc., can solve problems such as semiconductor laser array loss of lock, and achieve the effects of avoiding partial loss of lock, good beam quality, and high coupling efficiency
Active Publication Date: 2021-12-14
SUZHOU EVERBRIGHT PHOTONICS CO LTD +1
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
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
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[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...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a semiconductor laser array control system and a working method thereof. The system comprises a heat sink; a semiconductor laser array; a solder layer; a pressure applying device positioned on the semiconductor laser array; a near-field imaging lens, an image sensor and a fast axis collimating lens; a pressing determination unit; and a feedback structure which is suitable for applying pressure to a characteristic light-emitting chip by adopting the pressure applying device in the packaging and backflow process of the solder layer until the distance between an arbitrary j1-th light-emitting chip and an arbitrary j2-th light-emitting chip in the fast axis direction is smaller than a threshold value. The semiconductor laser array control system is beneficial for reducing vertical offset, caused by factors such as stress in the packaging process of the semiconductor laser array, of light-emitting chips of the semiconductor laser array in the optical near-field mass center position, is beneficial for acquiring better light beam quality and higher coupling efficiency, and is conductive to avoiding the problem of partial lock losing 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...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More 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