Light path collimation integrated device and method for high-power laser device

Abstract

The invention discloses a light path collimation integrated device and method for a high-power laser device. A transmission grating engraved with references is put near to the small-hole face of a space filter; the transmission grating is irradiated by parallel non-coherent illumination lights produced by a light emitting diode and an illumination collimation lens at a specific angle; a sampling light path is put in a direction of first-stage diffraction light of the transmission grating so as to form a light beam information monitor; the light beam information monitor simultaneously acquires information of a near field and a far field of a light beam; the output of the light beam information monitor is connected to a computer; deviation values of the near field and far field of the light beam relative to the respective set positions are determined through an image processing technology; and a corresponding near field adjusting device and a corresponding far field adjusting device are selected according to the respective deviation values so as to adjust light path collimation. The light path collimation integrated device has the characteristics of integration, modularization, simple structure and high precision, and can meet a monitoring requirement of the high-power laser device on large-aperture light beam collimation.

Description

technical field [0001] The invention relates to a high-power laser device, in particular to an optical path collimation integrated device and a collimation method for a high-power laser device, in particular to a near-field and far-field collimation method capable of meeting large-scale, large-caliber and high-power laser devices. A highly integrated and modular collimation monitoring device that is required. Background technique [0002] As one of the core components of high-power laser devices, the spatial filter plays multiple roles: suppressing parasitic oscillations, reducing the influence of spontaneous radiation, improving beam quality, suppressing self-focusing, realizing image transfer, and expanding the beam aperture. It is to improve the output capability of the driver. The core goal of the optical path collimation technology is to ensure the normal realization of the above functions of the spatial filter. A typical amplification chain structure of a high-power ...

AI Technical Summary

Problems solved by technology

This method is costly and takes up a huge amount of space, especially for collimated sampling of large-aperture (above 100 mm) beams. Not only is the implementation cost and technical difficulty unacceptable, but the sampling accuracy is also difficult to guarantee.

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