Projects per year
Abstract
Chiral nano- or metamaterials and surfaces enable striking photonic properties, such as negative refractive index and superchiral light, driving promising applications in novel optical components, nanorobotics, and enhanced chiral molecular interactions with light. In characterizing chirality, although nonlinear chiroptical techniques are typically much more sensitive than their linear optical counterparts, separating true chirality from anisotropy is a major challenge. Here, we report the first observation of optical activity in second-harmonic hyper-Rayleigh scattering (HRS). We demonstrate the effect in a 3D isotropic suspension of Ag nanohelices in water. The effect is 5 orders of magnitude stronger than linear optical activity and is well pronounced above the multiphoton luminescence background. Because of its sensitivity, isotropic environment, and straightforward experimental geometry, HRS optical activity constitutes a fundamental experimental breakthrough in chiral photonics for media including nanomaterials, metamaterials, and chemical molecules.
Original language | English |
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Article number | 011024 |
Journal | Physical Review X |
Volume | 9 |
Issue number | 1 |
DOIs | |
Publication status | Published - 6 Feb 2019 |
ASJC Scopus subject areas
- General Physics and Astronomy
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Dive into the research topics of 'First Observation of Optical Activity in Hyper-Rayleigh Scattering'. Together they form a unique fingerprint.Projects
- 1 Finished
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Look into my eyes
Valev, V. (PI)
Science and Technology Facilities Council
1/02/18 → 31/03/20
Project: Research council
Profiles
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Kristina Rusimova
- Department of Physics - Lecturer
- Centre for Photonics and Photonic Materials - Prize Fellow
- Centre for Nanoscience and Nanotechnology - Prize Fellow
- NanoBioPhotonics - Head of Group
Person: Research & Teaching, Core staff
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Ventsislav Valev
- Department of Physics - Head of Department
- Centre for Photonics and Photonic Materials
- Condensed Matter Physics CDT
- Centre for Nanoscience and Nanotechnology
- Centre for Therapeutic Innovation
- NanoBioPhotonics
Person: Research & Teaching, Core staff