A 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, inability to achieve, low peak power, etc., and achieve the effect of improving average power and quality
Active Publication Date: 2022-07-12
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 purposes, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the drawings 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 "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or is usually placed when the product of the application is used. The orientation or positional relations...
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The application relates to a fiber laser and a laser beam combining system, wherein the fiber laser includes: a control module, a multi-channel pulse seed source, a multi-channel fiber amplifier and a fiber beam combiner; the control module includes a timing control device and a current adjustment device, The timing control device is connected with each channel of the pulse seed source, and is used to control the laser output sequence of the multi-channel pulse seed source; each channel of the fiber amplifier includes a fiber amplifier drive power supply, and the current adjustment device is connected to The fiber amplifier is connected to a driving power supply for modulating the pulse intensity of the laser output; the fiber combiner is connected to the downstream of the multiplexed fiber amplifiers, and is used for outputting the combined laser with pulse sequence intensity modulation. The pulse intensity and output timing of the pulsed laser can be modulated, the output of the combined pulsed laser whose pulse sequence intensity can be modulated can be effectively realized, and the average power of the pulsed laser can be improved at the same time.
Description
technical field [0001] The present application relates to the field of laser technology, and 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 applications and the gradual improvement of the theory of laser-matter interaction, in order to achieve better processing quality, different requirements are put forward for laser pulses. The intensity of the laser pulse sequence needs to be modulated. A pulse train 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-channel laser is limited. [0004] Patent CN106848816A adopts timing synthesis multi-ch...
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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