High-power optical fiber laser QBH optical cable light beam quality detection system and detection method thereof

Abstract

The invention discloses a high-power optical fiber laser QBH optical cable light beam quality detection system and a detection method thereof. The detection system consists of a multikilowatt stage high-power optical fiber laser, a power feedback detection system and a light beam quality measuring system, wherein the power feedback detection system is put before the melting point of the optical fiber laser output optical fiber and a QBH optical cable. A collimator and a high reflective mirror are put along a light path; a power meter is put on a reflecting light path of the high reflective mirror; a first wedge plate glass is put on a transmission light path of the high reflective mirror; a second wedge plate glass is put onto the reflecting light path of the first wedge plate glass; a light beam quality analysis instrument is put onto the reflection light path of the second wedge plate glass. The high-power optical fiber laser QBH optical cable light beam quality can be measured; theself protection function is realized; if the optical fiber burnt damage is caused by the melting problem, the power feedback detection system can switch off the power automatically so as to protect the laser from being damaged.

Description

technical field [0001] The invention relates to the detection field of high-power fiber laser devices, in particular to a high-power fiber laser QBH optical cable beam quality detection system and a detection method thereof. Background technique [0002] Since its inception, laser has been widely used in science and technology, military, medical, industrial processing and communication fields due to its high brightness, high directivity, high monochromaticity and high coherence. In recent years, with the progress and development of laser technology, the peak output power of lasers has continuously made breakthroughs, high-power lasers have achieved rapid development, and are rapidly used in industrial and military fields. In the manufacturing industry, it can be used as a high-intensity light source for cutting, drilling, welding, etc. In the military field, it can be used for vehicle-mounted and ship-borne laser weapons, and can also be used as a beacon light source for la...

AI Technical Summary

Problems solved by technology

However, due to reasons such as process, design or welding, the beam quality of the laser may degrade after the laser passes through the QBH optical cable, which will affect the brightness of the laser

[0004] There is no standard test method in the industry for measuring the beam quality of QBH optical cables. Therefore, QBH manufacturers and manufacturers cannot judge and measure the quality of their products.

At the same time, if there is a problem with the quality of the QBH, the burning or nonlinear effects caused by it will cause the laser to burn out

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