Online monitoring system of optical fiber laser output power based on integrating sphere

Abstract

The invention relates to an online monitoring system of an optical fiber laser output power based on an integrating sphere. The system comprises a high-energy optical fiber laser output power sampler and a detecting unit, wherein the detecting unit comprises a photoelectric detector, a signal processing circuit and a data collecting and processing unit, the photoelectric detector is put into an output window of the high-energy optical fiber laser output power sampler, and a signal generated by the photoelectric detector is sent to the data collecting and processing unit after being processed by the signal processing circuit. The system is used for optical laser energy monitoring with different wavelengths by exchanging different sizes of the detectors, is capable of keeping an all-fiber compact structure of a high-energy optical fiber laser system without bearing strong laser irradiation and without the problem of laser damage threshold, is used for high-efficiency and high-energy optical fiber laser sampling and online monitoring, and is simple in structure, low in cost and easy to operate.

Description

technical field [0001] The invention relates to an on-line monitoring system for the output power of a fiber laser, in particular to an on-line measurement system for the output power of a fiber laser which uses an integrating sphere to sample and measure the output power of the fiber laser without disturbance. Background technique [0002] In medical and military laser application technologies, it is extremely important to realize real-time measurement of laser output power without reducing the output energy. Especially in the process of laser research, it is necessary to measure the energy emitted by the laser every time in real time. It is a direct indicator of diagnostic laser performance and is of great significance to the design, manufacture, detection and application of lasers. At present, one of the commonly used methods to realize real-time measurement of laser output power is on-line testing, that is, sampling part of the laser output main beam, and then measuring ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a fiber laser output power sampling and on-line monitoring method based on an integrating sphere in view of the existing laser output power on-line monitoring method that has a complex optical path and is difficult to apply to the on-line monitoring of fiber laser output power. method, using this method can realize the undisturbed real-time monitoring of the fiber laser output power

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