Mining the polarization-dependence of nonlinear optical measurements

The Analyst ◽  
2011 ◽  
Vol 136 (4) ◽  
pp. 652-662 ◽  
Author(s):  
Jeremy T. Madden ◽  
Victoria J. Hall ◽  
Garth J. Simpson
Keyword(s):  
Nonlinear Optical ◽  
Polarization Dependence ◽  
Optical Measurements

scholarly journals Nonlinear Optical Measurements of the Artery Wall: Parameters Related to the Progression of Atherosclerosis

2009 ◽  
Vol 9 (4) ◽  
Author(s):  
Michael Sowa ◽  
Leila Mostaco-Guidolin ◽  
Michael Smith ◽  
Elica Kohlenberg ◽  
Andrew Ridsdale ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Optical Measurements ◽  
Artery Wall ◽  
Progression Of Atherosclerosis

LINEAR AND NONLINEAR OPTICAL PROPERTIES OF GOLD NANOPARTICLES WITH BROKEN SYMMETRY

2006 ◽  
Vol 15 (01) ◽  
pp. 43-53 ◽  
Author(s):  
BRIAN K. CANFIELD ◽  
SAMI KUJALA ◽  
KAISA LAIHO ◽  
KONSTANTINS JEFIMOVS ◽  
TUOMAS VALLIUS ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Electron Beam Lithography ◽  
Nonlinear Optical ◽  
Optical Measurements ◽  
Broken Symmetry ◽  
Nanoparticle Arrays ◽  
Optical Responses ◽  
Optical Generation ◽  
Linear And Nonlinear

We describe our research involving arrays of gold nanoparticles fabricated with electron beam lithography. Small defects in the particles introduced during the fabrication process result in broken design symmetry. The broken symmetry renders the arrays chiral, and signatures of chirality can be observed in both the linear and nonlinear optical responses through precise polarization measurements. The defects enhance the local electric field, enabling more efficient nonlinear optical generation and therefore making nonlinear optical measurements more sensitive to their presence. We also discuss future objectives for clarifying the microscopic processes underlying the optical responses in gold nanoparticle arrays.

scholarly journals Non-Markovianity: initial correlations and nonlinear optical measurements

2012 ◽  
Vol 370 (1972) ◽  
pp. 3658-3671 ◽  
Author(s):  
Arend G. Dijkstra ◽  
Yoshitaka Tanimura
Keyword(s):  
Nonlinear Optics ◽  
Time Evolution ◽  
Response Function ◽  
Nonlinear Optical ◽  
Function Approach ◽  
Nonlinear Optical Response ◽  
Optical Measurements ◽  
Quantum Mechanical ◽  
Initial Correlations ◽  
Correct Understanding

By extending the response function approach developed in nonlinear optics, we analytically derive an expression for the non-Markovianity in the time evolution of a system in contact with a quantum mechanical bath, and find a close connection with the directly observable nonlinear optical response. The result indicates that memory in the bath-induced fluctuations rather than in the dissipation causes non-Markovianity. Initial correlations between states of the system and the bath are shown to be essential for a correct understanding of the non-Markovianity. These correlations are included in our treatment through a preparation function.

Reconstruction of temporal signals from nonlinear-optical measurements

1998 ◽  
Vol 28 (8) ◽  
pp. 728-732 ◽  
Author(s):  
Tatiana I Kuznetsova ◽  
I A Walmsley
Keyword(s):  
Nonlinear Optical ◽  
Optical Measurements

scholarly journals Nonlinear optical spectroscopy and two-photon excited fluorescence spectroscopy reveal the excited states of fluorophores embedded in a beetle’s elytra

2018 ◽  
Vol 9 (1) ◽  
pp. 20180052 ◽  
Author(s):  
Sébastien R. Mouchet ◽  
Charlotte Verstraete ◽  
Dimitrije Mara ◽  
Stijn Van Cleuvenbergen ◽  
Ewan D. Finlayson ◽  
...  
Keyword(s):  
Excited States ◽  
Nonlinear Optical ◽  
Polarization State ◽  
Polarized Light ◽  
Fluorescence Emission ◽  
Biological Tissues ◽  
Optical Measurements ◽  
Fluorescence Signal ◽  
Photonic Structure ◽  
Two Photon

Upon illumination by ultraviolet light, many animal species emit light through fluorescence processes arising from fluorophores embedded within their biological tissues. Fluorescence studies in living organisms are however relatively scarce and so far limited to the linear regime. Multiphoton excitation fluorescence analyses as well as nonlinear optical techniques offer unique possibilities to investigate the effects of the local environment on the excited states of fluorophores. Herein, these techniques are applied for the first time to study of the naturally controlled fluorescence in insects. The case of the male Hoplia coerulea beetle is investigated because the scales covering the beetle’s elytra are known to possess an internal photonic structure with embedded fluorophores, which controls both the beetle’s coloration and the fluorescence emission. An intense two-photon excitation fluorescence signal is observed, the intensity of which changes upon contact with water. A third-harmonic generation signal is also detected, the intensity of which depends on the light polarization state. The analysis of these nonlinear optical and fluorescent responses unveils the multi-excited states character of the fluorophore molecules embedded in the beetle’s elytra. The role of form anisotropy in the photonic structure, which causes additional tailoring of the beetle’s optical responses, is demonstrated by circularly polarized light and nonlinear optical measurements.

scholarly journals Angular Mapping of Protein Structure Using Nonlinear Optical Measurements

2019 ◽  
Vol 117 (3) ◽  
pp. 500-508
Author(s):  
Bason Clancy ◽  
Ben Moree ◽  
Joshua Salafsky
Keyword(s):  
Protein Structure ◽  
Nonlinear Optical ◽  
Optical Measurements
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