This is the biggest concern that can happen after a major laser procedure like this (and this is a major procedure, whatever the brochures say). With this type of procedure, many things can and will go wrong if they aren't handled correctly.
The skill and expertise of the surgeon is the only thing that is going to keep you from suffering problems if these things do occur and it is a dermatologist's field to treat these sorts of conditions if they come around.
For this reason, I recommend strongly that you go to a dermatologist to manage your procedure and do the procedure and hopefully, even if you do get an infection, they will be able to treat it easily. Good luck!