My laser is only some months old and the beam gets a halo more and more. Is it defective?

Most probably not. The halo-effect normally occurs when the optics are not properly clean. You need to regularly clean you laser device, especially the optics, to ensure best output quality together with long lifetime of the unit.

Dirt and dust inside the laser enclosure may lead to overheating or mechanical failure, so you need to regularly clean the device.

If you have one of our professional systems, you're lucky: The Sealed Housing units only need very few maintenance, the IP65 or above units are normally service free.

For cleaning the optical components we recommend using a microfibre cloth, probably together with some water.

In some cases there may be the need of window cleaner or similar, but be careful to not damage the coating of the dichroic filters. We do not recommend to use any strong cleaning liquids and also no strong alcohol.

Be careful when cleaning the optics to not break the scanners or dichros! Only small scratches have tremendous influence on the laser light parametres, so remember to not use any rough materials for cleaning.