Faculty Directory

Anaraki, Sina Zahedpour

Anaraki, Sina Zahedpour

Postdoctoral Research Associate
Institute for Research in Electronics & Applied Physics
0137 Energy Research Facility


  • Ph.D., Electrical Engineering, Electrical and Computer Engineering, University of Maryland, College Park, MD, 2017
  • M.S., Electrical Engineering, University of Maryland College Park, 2011
  • B.S., Electrical Engineering, Sharif University of Technology, Tehran, Iran, 2008


Dr. Sina Zahedpour Anaraki received his Ph.D. in electrical and computer engineering in December 2017 from the University of Maryland, College Park.   He received the ECE Distinguished Dissertation Award for his thesis "Ultrafast Nonlinear Response of Atomic and Molecular Gases in Near-IR and Mid-IR Regions."   He is presently working at the Laboratory for Intense Laser Matter Interactions at UMD under the direction of Professor Howard Milchberg.

Google Scholar

Nonlinear optics, laser-matter interactions and laser filamentation. We use single-shot supercontinuum spectral interferometry (SSSI) and other diagnostics to study the nonlinear response of materials (gases, liquids, and solids) to ultrashort pulses in the near, mid and long wavelength infrared regimes. We recently developed transient grating SSSI (TG-SSSI) to study the phase and amplitude of ultrashort pulses after linear and nonlinear propagation. Using this technique we showed that spatio-temporal optical vortices (STOVs) not only naturally spawn during collapse arrest phase of filamentation, but they can be linearly imposed on a pulse simply by a 4f-pulse shaper.

Somersaulting Photons

In a paper published today in Optica, Professor Milchberg’s group demonstrates the surprising result that photons in vacuum can have orbital angular momentum vectors pointing sideways.

UMD Physicists Discover “Smoke Rings” Made of Laser Light

3D ring structures made by high-intensity lasers could aid the design of powerful microscopes and more efficient telecommunication lines