Could this radar spot Malaysian missing plane?

As the search for the missing Malaysia Airlines flight intensifies, a new advanced radar system has been unveiled by scientists. But could it spot the plane?
The world’s first photonic radar was tested at Pisa Airport in Italy and achieved “world-class” performance, according to an independent expert.
It uses lasers to produce high fidelity signals that pinpoint planes precisely.
But there are doubts over its range, say researchers in Nature journal.
Could it really have followed flight MH370 as it veered off its route from Kuala Lumpur to Beijing - possibly travelling far out over the southern Indian Ocean where search teams are now investigating sightings of possible debris?