Single-Micron Scale Two-Layer Micro AU Chiral Structure with Circulary Polarized Light Absorption in FIR Region

2021 ◽  
Author(s):  
Gaku Furusawa ◽  
Takashi Sekiya ◽  
Hiroaki Nakamura ◽  
Tetsuo Kan
Keyword(s):  
Light Absorption ◽  
Polarized Light ◽  
Chiral Structure

Linearly polarized light absorption spectra of chlorosomes, light-harvesting antennas of photosynthetic green sulfur bacteria

2010 ◽  
Vol 484 (4-6) ◽  
pp. 333-337 ◽  
Author(s):  
Hitoshi Tamiaki ◽  
Shingo Tateishi ◽  
Shosuke Nakabayashi ◽  
Yutaka Shibata ◽  
Shigeru Itoh
Keyword(s):  
Absorption Spectra ◽  
Light Absorption ◽  
Light Harvesting ◽  
Polarized Light ◽  
Green Sulfur Bacteria ◽  
Sulfur Bacteria ◽  
Linearly Polarized ◽  
Green Sulfur

scholarly journals Polarization perception in humans: on the origin of and relationship between Maxwell’s spot and Haidinger’s brushes

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Gary P. Misson ◽  
Shelby E. Temple ◽  
Stephen J. Anderson
Keyword(s):  
Linear Polarization ◽  
Light Absorption ◽  
Polarized Light ◽  
Retinal Images ◽  
Clinical Use ◽  
Differential Absorption ◽  
Model Simulations ◽  
Eye Disorders ◽  
Absorption Of Light ◽  
Linearly Polarized

AbstractUnder specific conditions of illumination and polarization, differential absorption of light by macular pigments is perceived as the entoptic phenomena of Maxwell’s spot (MS) or Haidinger’s brushes (HB). To simulate MS and HB, an existing computational model of polarization-dependent properties of the human macula was extended by incorporating neuronal adaptation to stabilized retinal images. The model predicted that polarized light modifies the appearance of MS leading to the perception of a novel phenomenon. The model also predicted a correlation between the observed diameters of MS and HB. Predictions were tested psychophysically in human observers, whose measured differences in the diameters of each entoptic phenomenon generated with depolarized and linearly polarized light were consistent with the model simulations. These findings support a common origin of each phenomenon, and are relevant to the clinical use of polarization stimuli in detecting and monitoring human eye disorders, including macular degeneration. We conclude: (i) MS and HB both result from differential light absorption through a radial diattenuator, compatible with the arrangement of macular pigments in Henle fibres; (ii) the morphology of MS is dependent on the degree of linear polarization; (iii) perceptual differences between MS and HB result from different states of neural adaptation.

Polarized light absorption of the magnetic semiconductor CdCr2Se4

1983 ◽  
Vol 117 (1) ◽  
pp. 351-354 ◽  
Author(s):  
I. S. Edelman ◽  
G. Dustmuradov ◽  
V. P. Kononov
Keyword(s):  
Light Absorption ◽  
Polarized Light ◽  
Magnetic Semiconductor

Light Absorption by Pyrene Single Crystals Between 4 and 300 °K

1973 ◽  
Vol 28 (6) ◽  
pp. 973-979 ◽  
Author(s):  
D. Fischer ◽  
G. Naundorf ◽  
W. Klöpffer
Keyword(s):  
Phase Transition ◽  
Transition Temperature ◽  
Single Crystals ◽  
Absorption Edge ◽  
Ground State ◽  
Light Absorption ◽  
Room Temperature ◽  
Polarized Light ◽  
Equilibrium Distance ◽  
Exciton Transport

Pyrene single crystals have been grown from zone refined material by sublimation and from the melt. The absorption edge has been measured for thick and thin crystals at room temperature. Thin crystals have been successfully cooled below the phase transition temperature (123 °K) without cracking. The sharp absorption peak at 376 nm vanishes at this temperature while the fluorescence spectrum remains unchanged. Using polarized light below 50 °K, a band with a maximum at 410 nm appears whose intensity increases with decreasing temperature. It is concluded that this band is due to ground-to-excimer state absorption in the ground state equilibrium distance of the pyrene molecules. The consequences of this finding for excimer-exciton transport is discussed.

Spectral features of polarized light absorption and anisotropy of a local field in the D ho discotic

2000 ◽  
Vol 88 (6) ◽  
pp. 891-897
Author(s):  
E. M. Aver’yanov ◽  
V. A. Gunyakov ◽  
A. Ya. Korets ◽  
O. B. Akopova
Keyword(s):  
Local Field ◽  
Light Absorption ◽  
Polarized Light ◽  
Spectral Features
Sign in / Sign up

Export Citation Format

Share Document