Novel indicating and monitoring laser diode system with pigtail

Abstract

The invention discloses a novel indicating and monitoring laser diode system with a pigtail, characterized by comprising an indicating visible light laser diode light source, a dichroic beam splitter used for reflection filtering, a photoelectric detector used for monitoring, and a fiber pigtail used for coupling with visual light to enter a fiber laser system. The indication light emitted by the indicating visible light laser diode light source is all reflected in the fiber pigtail through the dichroic beam splitter and coupled in a fiber laser; the reflected light of the fiber pigtail directly reaches the photoelectric detector through the dichroic beam splitter; the photoelectric detector detects the light intensity of the fiber laser penetrating the reflected light of the fiber pigtail in real time. The detect novel indicating and monitoring laser diode system can monitor the reflection light intensity of the fiber laser system in real time so as to protect the fiber laser.

Description

technical field [0001] The invention relates to the technical field of fiber lasers, in particular to a novel laser diode system with pigtails for dual purposes of indication and monitoring. Background technique [0002] With the rapid adoption of fiber lasers in various industrial applications, the demand for pigtailed laser diodes is also growing rapidly. Due to the relatively high sensitivity of red light to human eyes after being reflected by various materials, basically all indicator laser diodes with pigtails integrated into fiber lasers have a wavelength of 635-660nm. [0003] The laser diode with pigtail integrated into the fiber laser mainly has the following two issues to consider: 1. The influence of the reflected fiber laser signal on the service life of the laser diode; 2. The echo of the laser diode Loss interferes with fiber lasers. [0004] In order to avoid damage to the laser diode by the laser signal leaked or reflected from the fiber laser, in addition ...

AI Technical Summary

Problems solved by technology

The high reflective coating of the fiber laser signal wavelength also means that the return loss of the fiber laser wavelength is low, and the signal reflected back to the fiber laser at the end face of the pigtail is high. With the continuous increase of the output power of the fiber laser, the laser diode The signal reflected back from the end face of the pigtail interferes with the normal operation of the fiber laser, and the probability of even damaging the fiber laser is greatly increased

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