60 citations · 105 across the 14 of their papers we have counts for
14 papers
Diagonalizing an optical coherence matrix via on-chip Stokes tomography
Amin Hashemi, Abbas Shiri, Bahaa E. A. Saleh +2
Structured coherence -- partially coherent light spanned by a finite number of modes -- is emerging as a powerful tool in optical communications, computation, cryptography, and spe…
On-chip measurement of the modal Stokes-Gell-Mann parameters for partially coherent three-mode light
Amin Hashemi, Abbas Shiri, Bahaa E. A. Saleh +2
The Stokes parameters are three real parameters that completely characterize partially coherent optical fields spanned by two modes -- whether a pair of polarization or spatial mod…
On-chip control of the coherence matrix of four-mode partially coherent light: rank, entropy, and modal Stokes parameters
Amin Hashemi, Abbas Shiri, Bahaa E. A. Saleh +2
Partially coherent light offers salutary capabilities in optical information processing that cannot be matched by coherent light. To date, this `coherence advantage' has been confi…
Programmable on-chip synthesis and reconstruction of partially coherent two-mode optical fields
Amin Hashemi, Abbas Shiri, Bahaa E. A. Saleh +2
Partially coherent light is typically studied in the context of freely propagating continuous fields. Recent developments have indicated the existence of a `coherence advantage' in…
Bridging the gap between ultrafast optics and resonant photonics via omni-resonance
Abbas Shiri, Kenneth L. Schepler, Ayman F. Abouraddy
High-finesse planar Fabry-P{é}rot (FP) cavities spectrally filter the incident field at discrete resonances, and thus cannot be utilized to resonantly enhance the field of ultrasho…
Theory of space-time supermodes in planar multimode waveguides
Abbas Shiri, Kenneth L. Schepler, Ayman F. Abouraddy
When an optical pulse is focused into a multimode waveguide or fiber, the energy is divided among the available guided modes. Consequently, the initially localized intensity spread…
Omni-resonant imaging across the visible
Layton A. Hall, Abbas Shiri, Ayman F. Abouraddy
Resonant field enhancement in optical cavities is provided over only narrow linewidths and for specific spatial modes. Consequently, spectrally restrictive planar Fabry-P{é}rot cav…
Spatial resolution of omni-resonant imaging
Abbas Shiri, Ayman F. Abouraddy
Omni-resonance refers to the broadening of the spectral transmission through a planar cavity, not by changing the cavity structure, but by judiciously preconditioning the incident…
Propagation-invariant space-time supermodes in a multimode waveguide
Abbas Shiri, Scott Webster, Kenneth L. Schepler +1
When an optical pulse is spatially localized in a highly multimoded waveguide, its energy is typically distributed among a multiplicity of modes, thus giving rise to a speckled tra…
Severing the link between modal order and group index using hybrid guided space-time modes
Abbas Shiri, Ayman F. Abouraddy
The structure of an optical waveguide determines the characteristics of its guided modes, such as their spatial profile and group index. General features are shared by modes regard…
Roadmap on multimode light shaping
Marco Piccardo, Vincent Ginis, Andrew Forbes +35
Our ability to generate new distributions of light has been remarkably enhanced in recent years. At the most fundamental level, these light patterns are obtained by ingeniously com…
Hybrid guided space-time optical modes in unpatterned films
Abbas Shiri, Murat Yessenov, Scott Webster +2
Light can be confined transversely and delivered axially in a waveguide. However, waveguides are lossy static structures whose modal characteristics are fundamentally determined by…
Omni-resonant space-time wave packets
Abbas Shiri, Murat Yessenov, Rohinraj Aravindakshan +1
We describe theoretically and verify experimentally a novel class of diffraction-free pulsed optical beams that are `Omni-resonant': they have the remarkable property of transmissi…
Doubling the near-infrared photocurrent in a solar cell via omni-resonant coherent perfect absorption
Massimo L. Villinger, Abbas Shiri, Soroush Shabahang +4
Minimizing the material usage in thin-film solar cells can reduce manufacturing costs and enable mechanically flexible implementations, but concomitantly diminishes optical absorpt…