AFAIK the current DIRCM use mirrors.
Where as the OZDIRCM and the directed energy weapon both use the Diode-pumped solid-state lasers and fiber optics.
Now where that tech has gone in the last 10 years, I don't know, but the micro-structured fluoride glass optical fibre was developed collaboratively by DSTO with Sydney University and was a world first, allowing the transmission of longer IR wavelengths of light.
now it may be a miniature, but it may be good for starting fires from a great height
