Solid‐state lasers based on inorganic–organic hybrid materials obtained by combined sol–gel polymer technology

Reisfeld, R.; Weiss, A. M.; Saraidarov, Tsiala; Yariv, Eli; Ishchenko, A. A.

doi:10.1002/pat.463

Cited by 50 publications

(40 citation statements)

References 57 publications

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“…Some of the more significant properties demonstrated by dye-doped sol-gel materials are photochromism, 6 laser action, 20 surface-enhanced Raman emission, 21 and a variety of nonlinear optical properties. 22 As recent review papers indicate, 22,23 this field continues to generate considerable interest, with particular emphasis on the technological development of optical communication devices that use sol-gel-derived inorganic/organic hybrid materials.…”

Section: Functional Properties Of Dye-doped Sol-gel Materialsmentioning

confidence: 99%

Molecules in Glass: Probes, Ordered Assemblies, and Functional Materials

Dunn¹,

Zink²

2007

ChemInform

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Research on the properties and applications of molecules doped into sol-gel-derived silica matrices has expanded rapidly. This Account begins with a brief review of the use of the dopant molecules as probes of the changes that occur as the system evolves from the initial sol to the final xerogel during the formation of monoliths, thin films, and mesostructured films. Methods of deliberately placing desired molecules in specific regions of the mesostructure are discussed, and an application, energy transfer, is presented. Finally, encapsulation of biological molecules is examined, and two important aspects, stabilization of the biomolecules and applications as biosensors, are described.

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Section: Functional Properties Of Dye-doped Sol-gel Materialsmentioning

confidence: 99%

Molecules in Glass: Probes, Ordered Assemblies, and Functional Materials

Dunn¹,

Zink²

2007

ChemInform

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“…At the present time hybrid materials are being developed on the basis of sol-gel technologies in two main directionsthe introduction of organic molecules by impregnating the xerogel without and with the formation chemical bonds between the components [211,216]. The former are generally called composite glasses and the latter ORMOSIL (organically modified silicates).…”

Section: Hybrid Organo-inorganic Dyed Polymer Compositionsmentioning

confidence: 99%

“…where R is an alkyl group, and the abbreviations TMOS and TEOS are used for the cases where R = Me and R = Et respectively [211,216]. The sol-gel processes can be realized without a solvent, but in many cases it is preferable to use a solvent in the initial mixture in order to control the reaction rate.…”

Section: Hybrid Organo-inorganic Dyed Polymer Compositionsmentioning

confidence: 99%

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Physical and chemical problems of the creation of photostable converters of light energy on the basis of dyed polymers

Ishchenko

Grabchuk

2009

Theor Exp Chem

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The main factors affecting the degradation of dyed polymeric matrices by the action of light (conversion of light energy into thermal energy, electron phototransfer, population of triplets, aggregation of dyes, oxidation-reduction processes, interaction with oxygen, including singlet) are analyzed and classified. Their dependence on the structure of the dyes, the nature of the polymer, and the method of dyeing of the latter is examined. Criteria for the creation of lightfast dyed matrices are formulated. Special attention is directed to contemporary light-sensitive materials in which the dye is covalently bonded to the polymer and to organic-inorganic compositions based on them.Dyed polymers are widely used in laser technology [1][2][3][4][5], media for writing and recording data [6-8], solar power [9][10][11][12], and optoelectronics [12][13][14][15]. Such polymeric materials have a series of operational advantages over dyed liquid materials on account of their more simple and more convenient construction, non-toxicity, and the possibility of working over a wide temperature range (from minus to plus temperatures) and under conditions of weightlessness. However, these advantages can only be realized to the full extent in the solution of various applied problems if dyed matrices with sufficient stability to the action of light are created. The aim of the present review was therefore to analyze, classify, and generalize methods of creating such matrices. FACTORS GIVING RISE TO THE DEGRADATION OF DYED POLYMERS DURING THE ACTION OF LIGHTThe presence of absorbing microimpurities that are heated by radiation are responsible for the radiation damage of optically transparent polymers. Purification from such inclusions at the monomer stage leads to a substantial increase in the threshold of radiation damage in the obtained polymer. For instance, the purification of methylmethacrylate (MMA) by repeated slow distillation raises this threshold of polymethylmethacrylate (PMMA) from several times [16] to two orders of magnitude [17]. 0040-5760/09/4503-0143

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“…These materials potentially combine the excellent optical properties of silica with the flexibility of incorporating organic moiety at the molecular level. Their potential photonic applications cover an enormous range, including passive and active waveguides, sensors, optical limiters and solid-state dye lasers [5,6].…”

Section: Introductionmentioning

confidence: 99%

Spectral and Lasing Characteristics of Some Red and Nir Laser Dyes in Silica Matrices

Притула

Bezkrovnaya

Puzikov

et al. 2015

Springer Series in Optical Sciences

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We synthesized a series of sol-gel silica matrices doped with laser dyes DCM, LK678, LD1, and LD2 which alcohol solutions have efficient lasing in the red spectral region and Rh800-in the near infrared (NIR) one. Absorption, fluorescence, and laser properties of the dyes in silica samples prepared by sol-gel process were investigated. It has found some peculiarities in preparation process of the laser matrices and in spectral characteristics of the dyes in these matrices. IntroductionThe lasers tuned in the red and the near infrared (NIR) regions of the spectrum and dyes-sensitizers for this spectral range are widely applied for diagnostics of different biological and medical objects. For instance, an oxazine dye [1] is used for early diagnostics of Alzheimer's disease. The urgency of laser sources for this region is due to the fact that the penetration depth of the radiation into living tissue for them is about a centimeter. Furthermore study of new photosensitizers with the silica coating for photodynamic therapy at infrared excitation [2] necessitates quest of new radiation sources.Dye lasers developed specially may be used for this purpose. However, for many practical applications solid-state dye lasers are the most challenging because of they are not required bulky dye-flow systems, and no toxic and inflammable solvents [3]. Matrices prepared by the sol-gel process, polymeric ones or porous glasses are used in these lasers.

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Solid‐state lasers based on inorganic–organic hybrid materials obtained by combined sol–gel polymer technology

Cited by 50 publications

References 57 publications

Molecules in Glass: Probes, Ordered Assemblies, and Functional Materials

Molecules in Glass: Probes, Ordered Assemblies, and Functional Materials

Physical and chemical problems of the creation of photostable converters of light energy on the basis of dyed polymers

Spectral and Lasing Characteristics of Some Red and Nir Laser Dyes in Silica Matrices

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