High-power laser beam sampler and high-power laser beam measuring system

Abstract

The invention discloses a high-power laser beam sampler and a high-power laser beam measuring system. The sampler comprises a plurality of optical fibers and laminated dielectric slabs, a plurality of parallel L-shaped groove arrays are arranged on the dielectric slabs, the optical fibers are arranged in L-shaped grooves, and an optical fiber incidence end faces a laser incidence direction, and an output end deviates from laser beams. The measuring system comprises the high-power laser beam sampler, a plurality of detectors, a signal processing circuit and a data acquisition processing unit. In the measuring system, by means of overlapping and clamping the optical fibers through the dielectric slabs, damage to the sampler caused by laser absorption of organic matters such as coating materials, glue or the like is avoided, and the threshold value of laser damage resistance of the sampler is improved. Besides, in application, the vast majority of laser is transmitted, only small parts of beams are sampled, the requirement of the system on bearing laser irradiation is lowered, and subsequent beams can be reused.

Description

technical field [0001] The invention relates to a high-power laser beam sampler and a high-power laser beam measurement system, in particular to a sampler and a measurement system for sampling and measuring high-power lasers using an optical fiber array. Background technique [0002] The output power of high-power lasers is as high as tens of thousands or hundreds of thousands of watts, and the diameter of its far-field beam can reach tens of centimeters. Due to its strong destructive power, the measurement of light intensity distribution parameters has become a technical problem. Commonly used high-power laser intensity spatio-temporal distribution measurement methods mainly include mechanical scanning sampling method and photoelectric array detection method. In 2001, the Chinese patent ZL02114633.0 invented a high-power laser beam measurement sampler based on the mechanical scanning sampling method. The ring light reflector is used to reflect the laser beam to the detector...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a high-power laser sampling and measurement based on optical fiber array for the existing photoelectric array detection method, which has poor ability to withstand laser irradiation and is difficult to apply to high-power and high-energy laser measurement. method

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