Event Details

Coherent Control of Wave Front Engineering

  • 2018-11-19
  • Tarak Nath Dey, Dept. of Physics, IIT Guwahati

We explore optical manipulation of sculpted light based on phase dependent electromagnetically induced transparency through both homogeneously and inhomogeneously broadened five level atomic system. A transverse magnetic field (TMF) and a suitable spatially inhomogeneous control field can be used to create a spatial probe transparency modulation at a desired location. Such transparency modulation is the principle behind the shaping of the light. Further, the beam propagation equation shows that the control field-induced selective phase information can be imprinted on the probe beam. Hence this controlled light shaping paves a new way for high contrast imaging, laser micromachining, creation of optical lattices and optical tweezers. Our work may also have applications in optical communication and information processing.