6 papers · 1 filter
Magneto-optic perturbation theory for near-complete violation of Kirchhoff's law of thermal emission at low magnetic fields
Daniel Cui, Aaswath P. Raman
Magneto-optic photonic systems can violate Kirchhoff's law of thermal emission by breaking Lorentz reciprocity. We develop a dispersive perturbation theory yielding an analytical e…
Quasi-bandgap behavior in non-Hermitian photonic crystals
Jin Xu, Daniel Cui, Aaswath P. Raman
We investigate non-Hermitian photonic crystals in which the lossy and lossless constituents share the same real permittivity and differ only in their imaginary part. We characteriz…
Loss-driven gain enhancements driven by topological singularities in non-Hermitian photonic crystals defects
Daniel Cui, Aaswath P. Raman
We show that purely lossy defects in one- and two-dimensional non-Hermitian photonic crystals can induce transmission matrix singularities not accessible with lossless defects. The…
Experimental demonstration of corrugated nanolaminate films as reflective light sails
Matthew F. Campbell, Pawan Kumar, Jason Lynch +11
Achieving laser-driven, reflective, relativistic light sails would represent a tremendous breakthrough for humankind, allowing us to advance our understanding of the solar system a…
Thermo-optic tuning of directional infrared emissivity
Jae S. Hwang, Jin Xu, Aaswath P. Raman
Tuning the spatial extent of directional thermal emission across an arbitrary, and fixed spectral bandwidth is a fundamentally enabling capability for a range of emerging applicati…
Chip-scale monolithic optoelectronic voltage boost conversion
Parthiban Santhanam, Daniel Cui, Jae Seung Hwang +4
Voltage conversion is a fundamental electronic process critical to engineered systems across a wide spectrum of applications and spanning many orders of magnitude in scale. Convent…