Local optimization of nonlinear luminescence in random gold metasurfaces by far-field wavefront control (Conference Presentation)

2018 ◽  
Author(s):  
Gauthier Roubaud ◽  
Pierre Bondareff ◽  
Giorgio Volpe ◽  
Sébastien Bidault ◽  
Sylvain Gigan ◽  
...  
Keyword(s):  
Local Optimization ◽  
Far Field ◽  
Wavefront Control ◽  
Nonlinear Luminescence

scholarly journals Far-Field Wavefront Control of Nonlinear Luminescence in Disordered Gold Metasurfaces

Nano Letters ◽  
2020 ◽  
Vol 20 (5) ◽  
pp. 3291-3298
Author(s):  
Gauthier Roubaud ◽  
Pierre Bondareff ◽  
Giorgio Volpe ◽  
Sylvain Gigan ◽  
Sébastien Bidault ◽  
...  
Keyword(s):  
Far Field ◽  
Wavefront Control ◽  
Nonlinear Luminescence

Self-Learning Wavefront Control Model Based on Far-Field Index Gradient

2020 ◽  
Vol 47 (4) ◽  
pp. 0405001
Author(s):  
许振兴 Xu Zhenxing ◽  
杨平 Yang Ping ◽  
程涛 Cheng Tao ◽  
许冰 Xu Bing ◽  
李和平 Li Heping
Keyword(s):  
Control Model ◽  
Far Field ◽  
Wavefront Control ◽  
Model Based ◽  
Index Gradient ◽  
Self Learning

Far-field beam shaping and steering using phase-retrieval-based wavefront control

2000 ◽  
Author(s):  
Bradley R. Stone ◽  
Byron M. Welsh ◽  
Michael C. Roggemann
Keyword(s):  
Phase Retrieval ◽  
Beam Shaping ◽  
Far Field ◽  
Wavefront Control

Possible applications of fraunhofer holography in high resolution electron microscopy

1978 ◽  
Vol 36 (1) ◽  
pp. 222-223 ◽  
Author(s):  
N. Bonnet ◽  
M. Troyon ◽  
P. Gallion
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Transfer Function ◽  
Radiation Damage ◽  
High Resolution Electron Microscopy ◽  
Far Field ◽  
Field Region ◽  
Crystalline Materials ◽  
Resolution Electron ◽  
The Ideal

Two main problems in high resolution electron microscopy are first, the existence of gaps in the transfer function, and then the difficulty to find complex amplitude of the diffracted wawe from registered intensity. The solution of this second problem is in most cases only intended by the realization of several micrographs in different conditions (defocusing distance, illuminating angle, complementary objective apertures…) which can lead to severe problems of contamination or radiation damage for certain specimens.Fraunhofer holography can in principle solve both problems stated above (1,2). The microscope objective is strongly defocused (far-field region) so that the two diffracted beams do not interfere. The ideal transfer function after reconstruction is then unity and the twin image do not overlap on the reconstructed one.We show some applications of the method and results of preliminary tests.Possible application to the study of cavitiesSmall voids (or gas-filled bubbles) created by irradiation in crystalline materials can be observed near the Scherzer focus, but it is then difficult to extract other informations than the approximated size.

Multifunctional far-field luminescence nanoscope for studying single molecules and quantum dots

2018 ◽  
Vol 189 (03) ◽  
pp. 312-322 ◽  
Author(s):  
Ivan Yu. Eremchev ◽  
M.Yu. Eremchev ◽  
Andrei V. Naumov
Keyword(s):  
Quantum Dots ◽  
Single Molecules ◽  
Far Field
Sign in / Sign up

Export Citation Format

Share Document