System and method for laser energy control
A technology of laser energy and energy, applied in the laser field, can solve the problems of difficult control, obvious stripes, and increased frequency of large energy output, and achieve the effect of being suitable for promotion, wide application, and simple structure
Inactive Publication Date: 2020-06-30
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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Problems solved by technology
It is found in the experiment that when the output energy of the preamplifier is small, the monitoring micro-energy card meter cannot respond, and the wave plate can only be adjusted by adjusting the preamplifier energy empirically. The number of times increases significantly, and it is relatively difficult to control
In the experiment, it is also found that even if the energy is adjusted in place, there will be obvious stripes in the output near field
Method used
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[0030] Such as figure 1 Shown is a system for laser energy control provided by the present invention, which sequentially includes a first control module, a first reflector 3, a micro energy card meter 4, a second reflector 5, a first amplifier 6, a second Amplifier 7, a second control module, a third mirror 10, and a near-field monitoring CCD 11.
[0031] Specifically, the first control module includes a first wave plate 1 and a first polarizer 2 .
[0032] Specifically, the first reflection mirror 3 is a 90% laser reflection mirror and a 10% laser transmission reflection mirror.
[0033] Specifically, the detection range of the micro-energy card meter 4 is above 0.45uJ.
[0034] Specifically, the second reflection mirror 5 is a total reflection mirror.
[0035] Specifically, the first amplifier 6 is neodymium glass xenon lamp amplifier.
[0036] Specifically, the second amplifier 7 is neodymium glass xenon lamp amplifier.
[0037] Specifically, the second control mod...
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The invention discloses a system and a method for laser energy control. The system comprises a first control module, a reflector, an energy card meter, an amplifier and a second control module which are sequentially arranged along a laser path; the first control module is used for adjusting the laser energy for the first time to obtain a first light beam; the reflector is used for splitting the first light beam to obtain a first reflected light beam and a second reflected light beam; the energy card meter is used for receiving the first reflected light beam and recording the energy of the first reflected light beam to obtain first power; the amplifier is used for improving the energy of the second reflected light beam to obtain a first amplified light beam; and the second control module isused for carrying out secondary adjustment on the first amplified light beam according to the first power to obtain a laser beam with target energy. The system is simple in structure and easy to implement, the control range is expanded, the control precision is improved, and the system is widely applied to the aspect of controlling the injection energy of a large high-power solid laser device.
Description
technical field [0001] The invention belongs to the field of laser technology, and in particular relates to a system and method for controlling laser energy. Background technique [0002] At present, the method often used in controlling the injection energy of solid-state laser devices is to adjust the angle of the 1 / 2 wave plate to match the polarizer. It is found in the experiment that when the output energy of the preamplifier is small, the monitoring micro-energy card meter cannot respond, and the wave plate can only be adjusted by adjusting the preamplifier energy empirically. The number of times increases significantly, and the control is relatively difficult. In the experiment, it is also found that even if the energy is adjusted in place, there will be obvious stripes in the output near field. [0003] Therefore, prior art still needs further development and improvement. Contents of the invention [0004] Aiming at various deficiencies in the prior art, in order...
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IPC IPC(8): H01S3/10
CPCH01S3/10007H01S3/10015
Inventor 李森宗兆玉李志军赵军普梁樾代万俊张君薛峤张晓璐龙蛟吴振海熊迁
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS