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Pointing control method for light beam synthesis on self-adaptive optical fiber collimator array target

A fiber collimator and beam combining technology, applied in the laser field, can solve the problems of slow convergence speed of optimization algorithm, difficulty in meeting actual system application requirements, poor stability, etc.

Active Publication Date: 2021-07-06
AEROSPACE SCI & IND MICROELECTRONICS SYST INST CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the optimization algorithm often has slow convergence speed and poor stability, which is difficult to meet the actual system application requirements.
There is currently no beam pointing control method for an adaptive fiber collimator array that directly detects and controls the pointing of each sub-beam

Method used

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  • Pointing control method for light beam synthesis on self-adaptive optical fiber collimator array target
  • Pointing control method for light beam synthesis on self-adaptive optical fiber collimator array target

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Embodiment Construction

[0025] All features disclosed in all embodiments in this specification, or steps in all implicitly disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined and / or extended and replaced in any way.

[0026] Such as figure 1 As shown, the pointing control method of beam combining on the adaptive fiber collimator array target, including:

[0027] Step 1, set the wavelength to λ i The indicator light of is coupled with the i-th main laser beam, where i=1, 2, 3, ... n, n is the number of adaptive fiber collimators, and λ 1 , lambda 2 ,...,λ n vary;

[0028] Step 2, specify the beam action position on the target (C x0 、C y0 );

[0029] Step 3, the wavelength on the detection target is λ i beam spot position (C xi 、C yi );

[0030] Step 4, adjust the pointing of the i-th beam so that the position of the beam spot (C xi 、C yi ) and beam action position (C x0 、C y0 )coincide.

[0031] Further, include:

[0032] Step 5, repeat...

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Abstract

The invention discloses a pointing control method for light beam synthesis on a self-adaptive optical fiber collimator array target, which comprises the following steps of: firstly, respectively coupling a path of indication light with different wavelengths in each main laser beam, detecting the position of each indication light beam on the target through a photoelectric detection system, and adjusting the pointing direction of each self-adaptive optical fiber collimator to obtain a light beam synthesis direction; and the position of the corresponding indication light on the target coinciding with the specified position, so that each main laser beam can act on the specified position on the target. According to the invention, the pointing control problem of light beam synthesis on a target of the self-adaptive optical fiber collimator is solved, the laser power density on the target is improved, and the action effect of the laser beam is improved.

Description

technical field [0001] The invention relates to the field of laser technology, and more specifically, relates to a pointing control method for beam synthesis on an adaptive fiber collimator array target. Background technique [0002] There is a physical limit to the single-fiber output power of single-mode fiber lasers. In order to further increase the output power, beam combining is an effective way. According to specific implementation methods, beam synthesis can be divided into two technical approaches: pre-launch synthesis and on-target synthesis. The adaptive fiber collimator array is a key device in the beam combining system on the target, and the direction of the output beam can be changed by moving the position of the fiber end cap on the focal plane of the collimating lens. Usually, the aperture of a single sub-beam output by an adaptive fiber collimator is smaller than the atmospheric correlation length, so the atmospheric turbulence mainly introduces inclination...

Claims

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Application Information

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IPC IPC(8): H01S3/23H01S3/067
CPCH01S3/23H01S3/067
Inventor 武春风董理治王勋陈善球吴丰阳邓键马社王晓丹
Owner AEROSPACE SCI & IND MICROELECTRONICS SYST INST CO LTD
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