Loss compensation in metamaterials and plasmonics with virtual gain

A Ghoshroy, ŞK Özdemir, DÖ Güney - Optical Materials Express, 2020 - opg.optica.org
Metamaterials and plasmonics potentially offer an ultimate control of light to enable a rich
number of non-conventional devices and a testbed for many novel physical phenomena …

Incoherent Active Convolved Illumination Enhances the Signal-to-Noise Ratio for Shot Noise: Experimental Evidence

W Adams, A Ghoshroy, DÖ Güney - Physical Review Applied, 2022 - APS
Imaging is indispensable for nearly every field of science, engineering, technology, and
medicine. However, measurement noise and stochastic distortions pose fundamental limits …

Theory of coherent active convolved illumination for superresolution enhancement

A Ghoshroy, W Adams, DÖ Güney - JOSA B, 2020 - opg.optica.org
Recently an optical amplification process called the plasmon injection scheme was
introduced as an effective solution to overcoming losses in metamaterials. Implementations …

PSF broadening due to fluorescence emission

J Becker, R Heintzmann - bioRxiv, 2019 - biorxiv.org
Fluorescent structures are nowadays commonly used in the field of biological imaging.
However the emission of fluorescence is always given within a finite spectrum. When the …

Better than a lens? Increasing the signal-to-noise ratio through pupil splitting

J Becker, T Deguchi, A Jügler, R Förster, U Hübner… - Optica, 2023 - opg.optica.org
Incoherent imaging via an unmodified full pupil seemingly yields the maximum achievable
signal-to-noise ratio (SNR) with respect to a fixed photon budget. Such photon-limited SNR …

Experimental realization of the active convolved illumination imaging technique for enhanced signal-to-noise ratio

W Adams, A Ghoshroy, DO Guney - arXiv preprint arXiv:2201.00046, 2021 - arxiv.org
Imaging is indispensable for nearly every field of science, engineering, technology, and
medicine. However, measurement noise and stochastic distortions pose fundamental limits …

Enhancing the resolution of imaging systems by spatial spectrum manipulation

W Adams - 2019 - search.proquest.com
Much research effort has been spent in the 21st century on superresolution imaging
techniques, methods which can beat the diffraction limit. Subwavelength composite …

Super-resolution enhancement with active convolved illumination and correlations

DÖ Güney, W Adams… - Active Photonic Platforms …, 2019 - spiedigitallibrary.org
The promise of high-resolution imaging beyond the diffraction limit has been a core
motivation for research in the fields of metamaterials and plasmonics. However, the …

Superresolution Enhancement with Active Convolved Illumination

A Ghoshroy - 2021 - search.proquest.com
The first two decades of the 21st century witnessed the emergence of “metamaterials”. The
prospect of unrestricted control over light-matter interactions was a major contributing factor …