Laser beam guiding method for wire target aiming
A laser beam and beam technology, applied in the field of laser beam guidance for wire target aiming, can solve the problems of unknown precision, unknown impact of physical experiments, no way to monitor, etc., and achieve the effect of ensuring guidance precision.
Active Publication Date: 2020-12-18
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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Problems solved by technology
However, whether it is a moving beam or a moving target support frame is a non-closed-loop process, that is, blind push, there is no way to monitor, the accuracy is unknown, and the impact on physical experiments is also unknown
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Embodiment 1
[0030] After the energy-amplified high-power laser beam is grouped and transmitted over a long distance, it is focused by the shooting lens to the impact point of the physical target. Since the silk target is only tens of microns, it will not block the laser beam. Therefore, the laser beam will continue to Backward transmission, at this time, the laser beam carries the frequency domain information introduced by the silk target (that is, the shielding of the silk target results in the loss of part of the energy share in the frequency domain). A lens is placed at the near-field position of the beam behind the silk target to collimate the laser beam into parallel light. The image sensor is used to receive the intensity information of the near-field of the beam, and the near-field deconvolution analysis of the beam is performed to obtain the laser beam and the silk target through inversion. mutual position information, and then complete the beam guidance.
[0031] Specifically, a ...
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The invention relates to a laser beam guiding method for wire target aiming, and belongs to the technical field of laser beam control. Spectral distribution of a laser beam incident light field is setas follows: a laser beam is focused to an impact point of a physical target and is incident to a wire target for continuous transmission; deconvolution analysis processing is carried out on the frequency domain of the near field of the laser beam and the reverse conjugate frequency domain of the near field of the laser beam, inversion is carried out to obtain the mutual position information of the laser beam and the wire target, and then light beam guiding is completed. The spatial high-frequency component of the laser beam is convolved with the wire target, relative position information of the wire target and the laser beam focal spot is carried, frequency domain analysis is carried out on the laser beam near field passing through the wire target, mutual position information of the laserbeam and the wire target is obtained, then light beam guiding of the wire target is completed, and accurate guiding and closed-loop control over incidence of the most probable energy center of the light beam into the wire target can be achieved, the guiding precision is ensured to the greatest extent and no special auxiliary equipment is introduced so that the method is economical and practical.
Description
technical field [0001] The invention belongs to the technical field of laser beam control, and in particular relates to a laser beam guiding method for wire target aiming. Background technique [0002] Large-scale high-power lasers are a type of complex optical system, which covers multiple disciplines such as optics, mechanics, electricity, control, measurement, and installation. Its function is to create an extreme material environment and provide research on various physical processes. Targeting accuracy is a key performance indicator of large-scale high-power lasers, which is related to the success or failure of physical experiments. In order to ensure the accuracy of shooting, before each official launch, it is necessary to carry out optical path alignment and beam guidance, so that the far-field focus of all beams can be accurately converged to the impact point of the physical target. The aiming of the physical target is assisted by a target aiming and positioning sen...
Claims
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IPC IPC(8): G02B27/00
CPCG02B27/0012
Inventor 张鑫邓学伟王德恩周维袁强杨英胡东霞赵军普王渊承
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS