I just found this article on BBC News, it seems lasers can not only push, but they can also pull:
But it seems it will take some time, of course, to implement it into the starships we are yet to built.
from http://www.bbc.co.uk/news/science-environment-12620560A laser can act as a "tractor beam", drawing small objects back toward the laser's source, scientists have said.
...
Rather than a science fiction-style weapon, however, the approach would only work over small distances.
But it seems it will take some time, of course, to implement it into the starships we are yet to built.