Laser pointers >1mW = prohibited weapon in Vic.,
http://www.austlii.edu.au/au/legis/v...g/cowr2011325/
General guidelines from today's research
An exemption may be required for >1mW for legitimate use. That is, mounted on an astronomical optical device for the purpose of finding. Rules seem to vary between states.
The usual understandings/caveats apply. Responsible use - no need to say, don't point at aircraft.