Results 61 to 70 of about 4,173 (275)

Improving Depth Sensitive Fluorescence Spectroscopy With Wavefront Shaping by Spectral and Spatial Filtering

IEEE Access, 2019
Depth sensitive optical spectroscopy preferentially detects optical spectra from different depths in layered samples, which plays a crucial role in many applications such as the optical diagnosis of epithelial precancer and cancer.
Chao-Mao Hsieh, Manish Verma, Quan Liu
doaj   +1 more source

Wavefront shaping of a Bessel light field enhances light sheet microscopy with scattered light

, 2014
The project was supported by the UK Engineering and Physical Sciences Research Council, RS MacDonald Charitable Trust, SULSA, and the St. Andrews 600th anniversary BRAINS appeal. K. D.
Vettenburg, T.; id_orcid, J. Nylk, K. Dholakia, Nylk, J., C. Mitchell, Vettenburg, T., Gunn-Moore, F. J., T. Vettenburg, Mitchell, C., Dholakia, K., Nylk, J.; id_orcid, F. J. Gunn-Moore   +11 more
core   +1 more source

Wavefront shaping for glare reduction

Optica, 2016
Scattering of light by random media limits many optical imaging and sensing applications, either by scrambling waves that carry images or by generating glare—background noise that hinders detection. In recent years, it was shown that the shaping of the wavefront of light before it enters the scattering environment allows an unexpected degree of control
Anat Daniel, Liat Liberman, Yaron Silberberg   +2 more
openaire   +1 more source

Coherent Raman Generation Controlled by Wavefront Shaping [PDF]

Scientific Reports, 2019
AbstractWe investigate the possibility of tailoring coherent Raman generated spectra via adaptive wavefront optimization. Our technique combines a spatial light modulator and a spectrometer providing a feedback loop. The algorithm is capable of controlling the Raman generation, producing broader spectra and an improved overall efficiency, and ...
Shutova, Mariia, Shutov, Anton D., Zhdanova, Alexandra A., Thompson, Jonathan V., Sokolov, Alexei V.   +4 more
openaire   +2 more sources

A comparative study of optimization algorithms for wavefront shaping [PDF]

Journal of Innovative Optical Health Sciences, 2019
By manipulating the phase map of a wavefront of light using a spatial light modulator, the scattered light can be sharply focused on a specific target.
Zahra Fayyaz, Nafiseh Mohammadian, M. Reza Rahimi Tabar, Rayyan Manwar, Kamran Avanaki   +4 more
doaj   +1 more source

Efficient Switchable Common Path Interferometer for Transmission Matrix Characterization of Scattering Medium

IEEE Photonics Journal, 2022
Transmission matrix can be used as an elegant tool to represent the light transmission characteristics of a scattering medium. In this paper, we propose a novel common path interferometer technique to measure the transmission matrix utilizing the ...
Han Gao, Haifeng Hu, Qiwen Zhan, Yanxin Zhang, Weigang Zhang   +4 more
doaj   +1 more source

Large Transverse Thermoelectric Effect in Weyl Semimetal TaIrTe4 Engineered for Photodetection

Advanced Functional Materials, EarlyView.
This experimental work shows that the anomalous scanning photocurrent response patterns of the Weyl semimetal TaIrTe4${\rm TaIrTe}_4$ under visible and long‐wave infrared illumination are due to a large transverse thermoelectric response of the material.
Morgan G. Blevins, Xianglin Ji, Vivian J. Santamaria‐Garcia, Abhishek Mukherjee, Thanh Nguyen, Mingda Li, Svetlana V. Boriskina   +6 more
wiley   +1 more source

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

Low‐Profile, High‐Gain GRIN RF Lenses via Multi‐Material Vat Photopolymerization

Advanced Functional Materials, EarlyView.
We investigate the opportunity of leveraging multi‐material vat photopolymerization printing to manufacture intricate lenses exhibiting permittivity gradients that can increase signal gain in transmitted radiofrequency signals in the X‐ and Ku‐bands. Lenses produced with more distinct low‐loss materials (up to 5) can deliver an 18 dB signal gain with a
Lawrence Romangsuriat, Alexander Peraire‐Bueno, A. John Hart, Randall M. Erb   +3 more
wiley   +1 more source

Ultra‐Confinement of Polaritons in Single Atomic Layer Ag Photonic Quantum Dots

Advanced Materials, EarlyView.
Strong confinement of surface phonon polaritons of silicon carbide was achieved in photonic quantum dots fabricated from van der Waals heterostructure of epitaxial graphene over single‐atomic layer silver. Scattering‐type scanning near‐field optical microscopy combined with an analytical approach, developed to reveal local propagation constants with ...
Xinyi Li, Tetyana Ignatova, Chengye Dong, Krishnan Mekkanamkulam Ananthanarayanan, Rinu Abraham Maniyara, Arpit Jain, Furkan Turker, Vinay Kammarchedu, Aida Ebrahimi, Joshua A. Robinson, Slava V. Rotkin   +10 more
wiley   +1 more source