Inharmonic theoretical models for photopolymers gratings formation [PDF]
, 2005 We present an analytical model of the dynamics of spatial harmonics of holographic grating profiles, taking into consideration record mechanisms (polymerization and components diffusion), absorption, interference pattern contrast and optional ...
John T. Sheridan +5 more
core +2 more sources
Comparison of holographic photopolymer materials by use of analytic nonlocal diffusion models [PDF]
, 2002 The one-dimensional diffusion equation governing holographic grating formation in photopolymers, which includes both nonlocal material response and generalized dependence of the rate of polymerization on the illuminating intensity, has been previously ...
Lawrence, Justin R. +3 more
core +1 more source
Electrically tunable, optically induced dynamic and permanent gratings in dye-doped liquid crystals [PDF]
, 2002 We report on further experimental studies of the ac field response of transient and permanent gratings written with visible light in both planar and homeotropic, dye-doped liquid crystal cells.
Cudney, Roger S. +3 more
core +1 more source
Implementation of vectorial bend sensors using long-period gratings UV-inscribed in special shape fibres [PDF]
, 2004 We report the implementation of vector bending sensors using long-period gratings (LPGs) UV-inscribed in flat-clad, four-core and D-shaped fibres. Our experiments reveal a strong fibre-orientation dependence of the spectral response when such LPGs are ...
Flockhart, G +8 more
core +2 more sources
A simple method for fabricating phase-shifted fibre Bragg gratings with flexible choice of centre wavelength [PDF]
, 2009 A simple technique for fabricating phase-shifted fibre Bragg gratings (PSFBGs) without the use of a phase-shifted phase mask is presented. Two, 3-mm long, standard fibre Bragg gratings (FBGs) were inscribed sequentially in singlemode fibre at the same
Ralph P. Tatam +5 more
core +1 more source
Interference and diffraction analysis of holographic gratings using the Finite-Difference Time-Domain method [PDF]
, 2010 The Finite-Difference Time-Domain method (FDTD) is based on a time-marching algorithm that has proven accurate in predicting microwave scattering from complicated objects.
Pérez Molina, Manuel +4 more
core +1 more source
Real-time interferometric characterization of a polyvinyl alcohol based photopolymer at the zero spatial frequency limit [PDF]
, 2007 We characterize the optical modulation properties of a polyvinyl alcohol/acrylamide (PVA/AA) photopolymer at the lowest end of recorded spatial frequencies.
Ortuño, Manuel +7 more
core +1 more source
Computational modelling and experimental characterisation of heterogeneous materials [PDF]
, 2009 Heterogeneous materials can exhibit behaviour under load that cannot be described by classical continuum elasticity. Beams in bending can show a relative stiffening as the beam depth tends to zero, a size effect.
Wheel, M. +8 more
core +4 more sources
Analysis of PVA/AA based photopolymers at the zero spatial frequency limit using interferometric methods [PDF]
, 2008 One of the problems associated with photopolymers as optical recording media is the thickness variation during the recording process. Different values of shrinkages or swelling are reported in the literature for photopolymers.
Ortuño, Manuel +7 more
core +1 more source
SmartMat, Volume 7, Issue 5, October 2026.Azobenzene materials possess reversible photofluidization, promising for surface patterning. This review summarizes state‐of‐the‐art advances in azo‐material photofluidization, including photoisomerization mechanisms, molecular/polymer structural categories, emerging patterning applications, remaining challenges and future outlooks.
Jian Chen +4 more
wiley +1 more source