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3 October 2024 Longitudinal and transverse optical rectification effect in symmetry-breaking one-dimensional finite gratings
Richard M. Osgood III, Jimmy Xu, Peter Moroshkin, Joseph Plumitallo, Tetsuyuki Ochiai
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Proceedings Volume PC13109, Metamaterials, Metadevices, and Metasystems 2024; PC131091O (2024) https://doi.org/10.1117/12.3027968
Event: Nanoscience + Engineering, 2024, San Diego, California, United States
Abstract
Optical Rectification (OR), where photon frequencies subtract to give a zero-frequency direct current (d.c.), is an interesting nonlinear optical effect. Rectifying antenna-coupled diodes have produced the highest-efficiency microwave power conversion > 80%. Most IR detectors are expensive unsustainable semiconductors with a band gap, built n specialized clean rooms with trained staff, dangerous chemicals. Recently OR, not band gap limited, did not require an insulator or semiconductor; plasmonic metals are sufficient. We have observed a near-IR OR longitudinal current along the surface of a resonant 1-D metasurface (no photon drag), and coupling of incident photon helicity to plasmon transverse spin (“spin-momentum locking”). Future OR may be tuned. Here, we report experimental observations of OR voltages from off-center laser beam illumination and a transverse OR current (an ‘OR Hall Effect’), present in the same simple plasmonic gold film patterned into a 1-D grating; left-right patterning breaks symmetry. The strong stripe optical nonlinearity and field enhancement cross-couple higher order polarization terms generating a transverse OR current. We discuss applications.
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Richard M. Osgood III, Jimmy Xu, Peter Moroshkin, Joseph Plumitallo, and Tetsuyuki Ochiai "Longitudinal and transverse optical rectification effect in symmetry-breaking one-dimensional finite gratings", Proc. SPIE PC13109, Metamaterials, Metadevices, and Metasystems 2024, PC131091O (3 October 2024); https://doi.org/10.1117/12.3027968
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KEYWORDS
Frequency conversion
Optical gratings
Infrared radiation
Nonlinear optics
Infrared detectors
Laser applications
Laser frequency
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