Optical and lasing characteristics of microporous quartz glass impregnated with a dye-activated epoxy polymer

Bermas, T. B.; Bortkevich, A. V.; Kostenich, Yu. V.; Lan'kova, S M; Paramonov, Yu.; Рубинов, А. Н.; Tsekhomskaya, T. S.

doi:10.1070/qe1994v024n01abeh000012

Cited by 6 publications

(4 citation statements)

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“…In the pores of alumina fluorescence the quantum yield of Rhodamine 6 G was equal to F f = 0.78. This value is greater than the quantum yield of luminescence of the dye in the matrix of methylmethacrylate (F f = 0.53 [26]) and epoxy polymer (F f = 0.67 [27]).…”

Section: Resultsmentioning

confidence: 77%

Plasmon-enhanced stimulated emission of Rhodamine 6 G in nanoporous alumina

Ibrayev¹,

Zeinidenov²

2014

Laser Phys. Lett.

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Properties of stimulated emission of Rhodamine 6 G in porous alumina matrix have been investigated. The characteristics of stimulated emission were examined upon excitation of the samples by second harmonic of Nd: YAG laser in the longitudinal form. It is established that when the pumping source power is equal to 0.38 MW cm−2 on the background spectrum of laser-induced fluorescence the narrow strip of the stimulated emission with a peak wavelength of 566 nm appears. Further increase in the power density of the pumping source leads to a narrowing of the band of stimulated emission and an increase in its intensity. The presence of silver NPs in porous alumina lowers the threshold of stimulated emission of the dye.

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Section: Resultsmentioning

confidence: 77%

Plasmon-enhanced stimulated emission of Rhodamine 6 G in nanoporous alumina

Ibrayev¹,

Zeinidenov²

2014

Laser Phys. Lett.

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“…As reference was used an ethanol solution of Rhodamine 6G (F f = 0.94 [22]). In the pores of alumina fluorescence quantum yield of Rhodamine 6G was F f = 0.78, which is more than the quantum yield of luminescence of the dye in the matrix of methylmethacrylate (F f = 0.53 [23]) and epoxypolymer (F f = 0.67 [24]).…”

Section: Resultsmentioning

confidence: 99%

The Laser Active Element Based on Dye on Porous Alumina

2013

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Luminescent properties of Rhodamine 6G in porous alumina matrix have been investigated. From the SEM images the pore diameter is determined to be ~ 50 nm and the distance between the pores to be about 250 nm. Specific surface area of nanoporous alumina films measured by gas adsorption (BET method) was 6 m2/g. Absorption and fluorescence spectra of Rhodamine 6G embedded in pores of anodic alumina oxide were measured. Decreasing of absorbance of monomers was observed upon increasing of Rhodamine 6G concentrations. At the same time appearing of new maximum at the short-wavelength part as a result of formation of dimer of dye was registered. Increasing of concentration of dye molecules in the pores leads to quenching of fluorescence of Rhodamine 6G. The lasing characteristics were examined upon excitation of the samples by second harmonic Nd: YAG laser λgen = 532 nm, Еimp = 90 mJ, τ = 10 ns in the longitudinal form. The dye generation spectra in nanoporous alumina under different power densities of the pump source were measured. It is established that when the pumping source power is 0.4 MW/cm2 on the background spectrum of laser - induced fluorescence the narrow strip of the laser emission with a peak wavelength of 572 nm appears. Further increase in the power density of the pumping source leads to a narrowing of the band of generation and an increase in its intensity. The obtained results demonstrate the potential of using nanoporous alumina for creating the active elements of quantum electronics.

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“…Polycondensation and polyaddition methods are also used for coloring polymers. The first of these methods is widely used for the creation of colored epoxides materials [158][159][160]. A major disadvantage of this method must be considered the use of basic or acidic catalysts, which as a rule lead to chemical decomposition of organic dyes, for hardening epoxide compositions [128].…”

Section: Methods Of Introduction Of Dyes Into the Polymer And Their Cmentioning

confidence: 99%

“…In such a process the dye is introduced by dissolution in the organic monomer. Dyed composite glasses with high optical and mechanical quality have been obtained [160,217,218].…”

Section: Hybrid Organo-inorganic Dyed Polymer Compositionsmentioning

confidence: 99%

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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Optical and lasing characteristics of microporous quartz glass impregnated with a dye-activated epoxy polymer

Cited by 6 publications

References 0 publications

Plasmon-enhanced stimulated emission of Rhodamine 6 G in nanoporous alumina

Plasmon-enhanced stimulated emission of Rhodamine 6 G in nanoporous alumina

The Laser Active Element Based on Dye on Porous Alumina

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

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