System and method for beam array phase control based on multi-phase perturbation

A phase control and phase perturbation technology, which is applied to lasers, laser components, electrical components, etc., can solve the problems of system control speed reduction and cost, improve control speed and control bandwidth, avoid iterative process, and control circuit structure is simple Effect

CN103227408BInactive Publication Date: 2016-01-20INST OF APPLIED PHYSICS & COMPUTATIONAL MATHEMATICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-01-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a beam array phase control system and a method based on multiphase perturbation. Emergent laser of a laser source in the control system is input to a beam splitter; multichannel laser output by the beam splitter is input to corresponding phase controllers respectively; the phase controllers are sequentially connected with optical amplifiers and an optical collimation emitter; the optical collimation emitter is sequentially connected with an optical splitter and a far field image device; the far field image device inputs the laser into a detector; an electrical signal output by the detector is input into a phase control algorithm module; the phase control algorithm module outputs a multichannel electrical control signal to the corresponding phase controllers; and a multiphase perturbation generation module outputs a multichannel electrical modulating signal to the corresponding phase controllers. With the adoption of the system and the method, the performance of a coherent combination system can be improved, and large-scale beam combining capacity can be achieved.
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Description

technical field

[0001] The invention relates to the field of coherent combination and beam control, in particular to a beam array phase control system and method based on multi-phase perturbation. Background technique

[0002] Due to its advantages in thermal management and beam control, the coherent combination of multiple lasers has become one of the feasible ways to break through the limitations of factors such as thermal effects and laser medium characteristics, and obtain laser output with higher average power and high beam quality. The realization of coherent combination requires the use of phase control technology to lock the phases of each laser beam to achieve an approximately consistent state. Due to the influence of various sources of phase noise, the phase of each beam in a practical system will change dynamically. In order to ensure the effective locking of the system phase, the phase control speed is an important index to evaluate the system performance. At p...

Examples

Embodiment Construction

[0019] The following examples are used to illustrate the present invention, but not to limit the present invention. Those skilled in the art can also make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, equivalent technical Schemes are also within the scope of the present invention.

[0020] figure 1 It is a structural schematic diagram of the beam array phase control system of the multi-phase perturbation of the present invention, such as figure 1 As shown, the beam array phase control system of multi-phase perturbation of the present invention includes a laser source 1, a beam splitter 2, a phase controller 3, an optical amplifier 4, an optical calibration transmitter 5, a beam splitter 6, a far-field imaging device 7, and a detection device 8, phase control algorithm module 9, multi-phase disturbance generation module 10. Laser source 1 is a 1064nm ytterbium-doped fiber laser, and the output light passes...