6 papers
2D semiconductors as integrated light sources for plasmonic waveguides
Christian Frydendahl, Torgom Yezekyan, Vladimir Zenin +1
2D materials are compatible with many material platforms as they adhere to other materials strictly by van der Waals interactions. This, together with the variety of band gaps foun…
2D semiconductors as on-chip light sources for integrated nanophotonics
Christian Frydendahl, Torgom Yezekyan, Vladimir A. Zenin +1
Incorporating on-chip light sources directly into nanophotonic waveguides generally requires introducing a different material to the chip than that used for guiding the light, a cr…
An atlas of photonic and plasmonic materials for cathodoluminescence microscopy
Sven Ebel, Yonas Lebsir, Torgom Yezekyan +2
Cathodoluminescence (CL) microscopy has emerged as a powerful tool for investigating the optical properties of materials at the nanoscale, offering unique insights into the behavio…
Near-field refractometry of van der Waals crystals
Martin Nørgaard, Torgom Yezekyan, Stefan Rolfs +3
Common techniques for measuring refractive indices, such as ellipsometry and goniometry, are ineffective for van der Waals crystal flakes because of their high anisotropy and small…
Quasi-bound states in the continuum in finite waveguide grating couplers
Torgom Yezekyan, Roza Gabrielyan, Sergey I. Bozhevolnyi
Finite-size effects occurring for quasi-bound states in the continuum (qBIC) formed in symmetric and asymmetric all-dielectric waveguide grating couplers are investigated using num…
Highly efficient, tunable, electro-optic metasurfaces based on quasi-bound states in the continuum
Christopher Damgaard-Carstensen, Torgom Yezekyan, Mark L. Brongersma +1
Ultrafast and highly efficient dynamic optical metasurfaces enabling truly spatiotemporal control over optical radiation are poised to revolutionize modern optics and photonics, bu…