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Pernille Undrum Fathi on Muck Rack

Pernille Undrum Fathi

As seen in: Nature
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Articles

Quantum-well metasurface for free-space-accessible enhanced nonlinear polarization

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By Irene Occhiodori, Patrick Devaney, Amberly F. Ricks, Rithvik Ramesh, Yiwei Ju, Moaz Waqar, Theodore Letsou, Hyunseung Jung, Igal Brener, Xiaoqing Pan, Marcus Ossiander, Federico Capasso, Pernille Undrum Fathi, Christina M. Spägele
| Nature Verified
Abstract Nonlinear frequency conversion underpins important technologies such as telecommunications and quantum computation; however, weak nonlinearities and architectures that resist miniaturization currently limit devices’ efficiency and widespread adoption. Here we combine a band-structure-engineered GaAs/AlGaAs multi-quantum-well heterostructure with a high-quality-factor dielectric metasurface and symmetry-broken guided-mode field profiles to enhance the material nonlinear susceptibility.
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