scholarly journals Bond alternation, polarizability, and resonance detuning in methine dyes

2011 ◽  
Vol 134 (11) ◽  
pp. 114520 ◽  
Author(s):  
Seth Olsen ◽  
Ross H. McKenzie
Keyword(s):  
Bond Alternation ◽  
Resonance Detuning

scholarly journals Observation of intensity flattened phase shifting enabled by unidirectional guided resonance

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Zixuan Zhang ◽  
Xuefan Yin ◽  
Zihao Chen ◽  
Feifan Wang ◽  
Weiwei Hu ◽  
...  
Keyword(s):  
Phased Array ◽  
Intensity Variation ◽  
Phase Shifting ◽  
Light Detection And Ranging ◽  
Light Modulation ◽  
Optical Resonances ◽  
Single Side ◽  
Resonance Detuning ◽  
Optical Phased Array ◽  
State Of Art

Abstract Phase-only light modulation is an important functionality for many optoelectronic applications. Although modulation efficiency can be significantly improved by using optical resonances, resonance detuning is always accompanied with dramatic intensity variation that is less ideal. Here, we propose a method to achieve intensity-flattened phase shifting by utilizing the unidirectional guided resonance (UGR) – a novel class of topologically enabled guided resonance that only radiates toward a single side. Consequently, the incident excites resonances and generates phase shifting, but it transmits to only one out-going port without other choice, which flattens the transmittance. Theory and simulation agree well and confirm our findings, in particular when nonradiative loss has been taken into account. By directly measuring the intensity and phase responses of UGR samples, a dip depth of 0.43 is observed with nonradiative Q around 2500. We further predict a dip depth of 0.13 can be achieved with a reasonable nonradiative Q around 8000 in state-of-art fabrication precision, which is sufficient and useful for the applications ranging from light projection, flat metalens optics, optical phased array, to light detection and ranging.

scholarly journals Angular group induced bond alternation (AGIBA) observed in aromatic azine derivatives

2002 ◽  
Vol 58 (s1) ◽  
pp. c328-c328
Author(s):  
E. Pindelska ◽  
T. M. Krygowski ◽  
R. Anulewicz-Ostrowska ◽  
J. Nowacki
Keyword(s):  
Bond Alternation

Bond alternation in (18)-annulene

1966 ◽  
Vol 62 ◽  
pp. 2011 ◽  
Author(s):  
J. N. Murrell ◽  
A. Hinchliffe
Keyword(s):  
Bond Alternation

Angular group-induced bond alternation. III. The case of ortho-dimethoxybenzene derivatives. Crystal and molecular structure of 3,4-dimethoxybenzaldehyde (4-methylphenyl)sulfonylhydrazone

Tetrahedron ◽  
1998 ◽  
Vol 54 (40) ◽  
pp. 12289-12294 ◽  
Author(s):  
Tadeusz Marek Krygowski ◽  
Edyta Piȩtka ◽  
Romana Anulewicz ◽  
MichałKsawery Cyrański ◽  
Jacek Nowacki
Keyword(s):  
Molecular Structure ◽  
Crystal And Molecular Structure ◽  
Bond Alternation
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