Why does the shutter of the laser head close automatically during operation?

When the laser receives a back reflection from the setup (e.g. when coupling the laser output to a fibre) it is possible that the shutter closes automatically during operation. Therefore please avoid feeding back reflected light from optical components such as a fibre facet, which can be achieved by introducing a slight angle between the incoming beam and the component’s normal. Thus the reflected beam does not travel back the same way as the incoming beam. The coupling efficiency to a fibre should not be affected significantly by a small angle, FC/APC fibres are recommended.

If back-reflections into the laser can be excluded and the shutter still closes automatically, please contact us.

Related to: venteon/ taccor/ gecco