70 citations · 230 across the 17 of their papers we have counts for
10 papers · 1 filter
Galilean Invariance in the Characterization of Light Drag in Moving Atomic Vapor
Edgar S. Arroyo-Rivera, Long D. Nguyen, Surendar Vijayakumar +2
Light experiences drag effects when it propagates through a moving medium. The study of light drag has provided foundational insights into light-matter interactions. While longitud…
Modeling beam propagation in a moving nonlinear medium
Ryan Hogan, Giulia Marcucci, Akbar Safari +4
Fully describing light propagation in a rotating, anisotropic medium with thermal nonlinearity requires modeling the interplay between nonlinear refraction, birefringence, and the…
The shadow of a laser beam
Raphael A Abrahao, Henri P N Morin, Jordan T R Page +3
Light, being massless, casts no shadow; under ordinary circumstances, photons pass right through each other unimpeded. Here, we demonstrate a laser beam acting like an object - the…
Strong Reverse Saturation and Fast-Light in Ruby
Akbar Safari, Cara Selvarajah, Jenine Evans +2
We observe a strong reverse saturation of absorption in ruby at a wavelength of 473 nm. With an intensity-modulated laser, we observe that the peaks of the pulses appear more than…
Beam deflection and negative drag in a moving nonlinear medium
Ryan Hogan, Akbar Safari, Giulia Marcucci +2
Light propagating in a moving medium with refractive index other than unity is subject to light drag. While the light drag effect due to the linear refractive index is often neglig…
Superscattering, Superabsorption, and Nonreciprocity in Nonlinear Antennas
Lin Cheng, Rasoul Alaee, Akbar Safari +3
We propose tunable nonlinear antennas based on an epsilon-near-zero material with a large optical nonlinearity. We show that the absorption and scattering cross sections of the ant…
Kerker Effect, Superscattering, and Scattering Dark State in Atomic Antennas
Rasoul Alaee, Akbar Safari, Vahid Sandoghdar +1
We study scattering phenomena such as the Kerker effect, superscattering, and scattering dark states in a subwavelength atomic antenna consisting of atoms with only electric dipole…
Terahertz Nonlinear Optical Response of Water Vapor
Payman Rasekh, Akbar Safari, Murat Yildirim +4
We report on the nonlinear spectroscopy of water vapor at THz frequencies. Atmospheric water vapor has a rich spectrum with several strong resonances at frequencies below 3 THz, fa…
Measurement of the Photon-Plasmon Coupling Phase
Akbar Safari, Robert Fickler, Enno Giese +3
Scattering processes have played a crucial role in the development of quantum theory. In the field of optics, scattering phase shifts have been utilized to unveil interesting forms…
Generation of Caustics and Spatial Rogue Waves from Nonlinear Instability
Akbar Safari, Robert Fickler, Miles J. Padgett +1
Caustics are natural phenomena in which nature concentrates the energy of waves. Although, they are known mostly in optics, caustics are intrinsic to all wave phenomena. For exampl…