5 papers
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…
Nonreciprocal Thermophotonic Cooling
Daniel Cui, Parthiban Santhanam, Aaswath P. Raman
Solid-state cooling via electroluminescent emission from light-emitting diodes is a promising alternative to thermoelectric and vapor-compression refrigeration, but practical perfo…
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…
Directional Thermal Emission Across Both Polarizations in Planar Photonic Architectures
David E. Abraham, Daniel Cui, Baolai Liang +5
Directional and spectral control of thermal emission is essential for applications in energy conversion, imaging, and sensing. Existing planar, lithography-free epsilon-near-zero (…