A Volume Holographic Sol‐Gel Material with Large Enhancement of Dynamic Range by Incorporation of High Refractive Index Species

Monte, Francisco del; Martínez-Graullera, Óscar; Rodrigo, José A.; Calvo, M. L.; Cheben, Pavel

doi:10.1002/adma.200502675

Cited by 73 publications

(87 citation statements)

References 25 publications

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“…To achieve contrast in electron microscopy, conductive species are necessarily required. This is the case where nanoparticles are incorporated [33,34]. Thus, transmission electron microscopy (TEM) is used to evaluate the degree of nanoparticle assembly [33,35].…”

Section: Microscopic Techniquesmentioning

confidence: 99%

“…This is the case where nanoparticles are incorporated [33,34]. Thus, transmission electron microscopy (TEM) is used to evaluate the degree of nanoparticle assembly [33,35]. Scanning force microscopy (SFM) may be applied additionally, to map surface modulations [33,36].…”

Section: Microscopic Techniquesmentioning

confidence: 99%

“…Thus, transmission electron microscopy (TEM) is used to evaluate the degree of nanoparticle assembly [33,35]. Scanning force microscopy (SFM) may be applied additionally, to map surface modulations [33,36]. Nanocomposite materials are also the subject of investigations by luminescence microscopy [37].…”

Section: Microscopic Techniquesmentioning

confidence: 99%

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Volume Holography: Novel Materials, Methods and Applications

Sabel¹,

Lensen²

2017

Holographic Materials and Optical Systems

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This chapter aims to establish a link between material compositions, analytical methods and advanced applications for volume holography. It provides basics on volume holography, serving as a compendium on volume holographic grating formation, specific material requirements for volume holography and diffractive properties of the different types of volume holographic gratings. The particular significance of three-dimensional optical structuring for the final optical functionality is highlighted. In this context, the interrelation between function and structure of volume holograms is investigated with view to research on and development of novel materials, methods and applications. Particular emphasis will be placed on analytical methods, assuming that they provide access for a deeper understanding of volume holographic grating formation, which appears to be prerequisite for the design of novel material systems for advanced applications.

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Section: Microscopic Techniquesmentioning

confidence: 99%

Section: Microscopic Techniquesmentioning

confidence: 99%

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Volume Holography: Novel Materials, Methods and Applications

Sabel¹,

Lensen²

2017

Holographic Materials and Optical Systems

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“…17 Here, we summarize the modified method, with more details described in the Appendix. First, the concentration of HRIS in the samples was reduced compared to Ref.…”

Section: Samples Preparationmentioning

confidence: 99%

“…16 The refractive index modulation was subsequently enhanced to $0.01 by incorporating a zirconium-based high refractive index species (HRIS) to the photopolymerizable glass. 17 Zirconium isopropoxide Zr(O i Pr) 4 high index species was introduced at a molecular level to minimize scattering loss. The incorporation of ZrO 2 nanoparticles to polymeric films has also been demonstrated to increase material dynamic rage.…”

mentioning

confidence: 99%

Photopolymerizable organically modified holographic glass with enhanced thickness for spectral filters

Velasco

Calvo

Cheben

2013

Journal of Applied Physics

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A novel formulation and synthesis method to overcome the thickness limitations in samples of photopolymerizable glasses with high refractive index species is presented. The reported method allows the recording of volume holographic diffraction gratings in samples of $500 lm thickness with a high optical quality and low scattering. Holographic grating recording is performed in a single coherent light exposure step, resulting in volume gratings of high optical quality. A holographic notch filter implemented in a 500 lm thick photopolymerizable glass with a spectral bandwidth below 0.3 nm and an excellent filter extinction ratio of <À27 dB is also demonstrated.

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Spontaneous Formation of Complex Periodic Superstructures under High Interferential Illumination of Small‐Molecule‐Based Photochromic Materials

Ishow

Camacho-Aguilera

Guérin

et al. 2009

Adv Funct Materials

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A series of push‐pull azo compounds containing bulky substituents are synthesized, yielding fully amorphous materials with glass‐transition temperatures above 200 °C. Thin films are subjected to holographic illumination and show superior bulk photomigration in terms of speed and efficiency compared to materials exhibiting similar electronic and photochromic properties in the solid state. The reported results give evidence that a microscopic consideration of the free volume rather than macroscopic parameters like the glass‐transition temperature should to be adopted to interpret the matrix stiffness and its deformation ability. Irradiation performed at higher laser intensity produces periodic superstructures whose height is five to six times as high as the initial film thickness. The surface tension and instability effects are put forward to interpret the growth of such superstructures.

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A Volume Holographic Sol‐Gel Material with Large Enhancement of Dynamic Range by Incorporation of High Refractive Index Species

Cited by 73 publications

References 25 publications

Volume Holography: Novel Materials, Methods and Applications

Volume Holography: Novel Materials, Methods and Applications

Photopolymerizable organically modified holographic glass with enhanced thickness for spectral filters

Spontaneous Formation of Complex Periodic Superstructures under High Interferential Illumination of Small‐Molecule‐Based Photochromic Materials

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