Speckle free lasers produce High definition images

A team of researchers led by Brendan Redding of Yale university has demonstrated low coherence random lasers that produce images as speckle free as those made using LEDs or bulbs.

In these lasers,light is reflected off small particles randomly distributed in a fluid inside the layer-instead of mirors at either end of the laser,as is typically done to concentrate the beam.Lasers are used to power high definition projectors in cinemas and to illuminate objects for imaging.
                                        But speckles that randomly surround the laserbeam blur images.To compensate for this,complex laser based optical systems have been devised with parts constantly in motion to suppress the mottled light.Breaking down coherence inside the laser itself is a much simpler solution.
                            Low coherence random lasers should light up small objects well enough to produce images that track real time motion,like the beting of the heart in an embryo..