  We present data that show a cycling transition can be used to detect and
image metastable He$_2$ triplet molecules in superfluid helium. We demonstrate
that limitations on the cycling efficiency due to the vibrational structure of
the molecule can be mitigated by the use of repumping lasers. Images of the
molecules obtained using the method are also shown. This technique gives rise
to a new kind of ionizing radiation detector. The use of He$_2$ triplet
molecules as tracer particles in the superfluid promises to be a powerful tool
for visualization of both quantum and classical turbulence in liquid helium.
