Fiber laser and laser beam combining system
A fiber laser and fiber combiner technology, applied in the laser field, can solve the problems of pulse intensity modulation, impossibility, and low peak power, and achieve the effect of increasing average power and improving quality
Active Publication Date: 2022-01-28
ZHEJIANG RECI LASER TECH CO LTD
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Problems solved by technology
[0003] The output pulse sequence of a common pulsed laser has the same peak power, and the amplitude of the pulse can be modulated by adding an optical modulator, but the average power of a single laser is limited
[0004] Patent CN106848816A adopts time-sequential synthesis of multiple quasi-continuous fiber lasers, which can effectively increase the average laser power, but it does not modulate the pulse intensity. At the same time, the peak power of the quasi-continuous fiber laser itself is not high, and it realizes the pulse by modulating the pump current. Output, only microsecond pulses can be realized, and shorter nanosecond pulses cannot be realized
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[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are some of the embodiments of the present application, but not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0035] In the description of this application, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the usual placement of the application product when it is used. Orientation or positional relationship is only for the convenie...
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The invention relates to an optical fiber laser and a laser beam combining system. The optical fiber laser comprises a control module, a multi-path pulse seed source, a multi-path optical fiber amplifier and an optical fiber beam combiner. The control module comprises a time sequence control device and a current adjusting device, and the time sequence control device is connected with each path of pulse seed source and used for controlling the laser output time sequence of the multiple paths of pulse seed sources; each path of optical fiber amplifier comprises an optical fiber amplifier driving power supply, and the current adjusting device is connected with each path of optical fiber amplifier driving power supply and is used for modulating the pulse intensity of laser output; and the optical fiber beam combiner is connected to the downstream of the multiple paths of optical fiber amplifiers and is used for outputting beam-combined laser for pulse sequence intensity modulation. The pulse intensity and the output time sequence of the pulse laser can be modulated, the output of the combined pulse laser with the modulated pulse sequence intensity is effectively realized, and meanwhile, the average power of the pulse laser is improved.
Description
technical field [0001] The present application relates to the field of laser technology, in particular, to a fiber laser and a laser beam combining system. Background technique [0002] Pulsed fiber lasers have the advantages of high peak power, high beam quality, and high reliability, and are widely used in laser precision machining and special material processing. With the deepening of the application and the gradual improvement of the theory of the interaction between laser and matter, in order to achieve better processing quality, different requirements are put forward for the laser pulse, and the intensity of the laser pulse sequence needs to be modulated. A pulse sequence contains different intensities. pulse. [0003] The output pulse sequence of a common pulsed laser has the same peak power, and the amplitude of the pulse can be modulated by adding an optical modulator, but the average power of a single laser is limited. [0004] Patent CN106848816A adopts time-seq...
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IPC IPC(8): H01S3/067H01S3/00H01S3/23
CPCH01S3/06754H01S3/2325H01S3/2383H01S3/0085
Inventor 薛宇豪徐海军刘江
Owner ZHEJIANG RECI LASER TECH CO LTD