Holographic recording in amorphous As2S3 films at 633nm

Ozols, Andris; Saharovs, Dm.; Reinfelde, M.

doi:10.1016/j.jnoncrysol.2006.02.072

Cited by 29 publications

(14 citation statements)

References 17 publications

(40 reference statements)

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“…(4) one gets the following equation for the HG double amplitude Δn g : 7The solution of this equation is: (8) Then by assuming from Eqs. 3and 8 Equations (9) and (10) are in qualitative agreement with the experimental curves (Fig. 5) depicting the visibility dependence of the maximal DE and recording sensitivity.…”

Section: Resultssupporting

confidence: 81%

Recording of holographic gratings and their coherent self-enhancement in an a-As2S3 film with a minimum light intensity modulation

Ozols¹,

Augustovs²,

Saharov³

2012

Lith. J. Phys.

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The holographic grating recording efficiency and the coherent self-enhancement efficiency of gratings are experimentally studied depending on the recording light interference fringe visibility in an a-As 2 S 3 chalcogenide film in order to find the minimum visibility. The minimum fringe visibility M min = 3.6×10-4 is found, which is determined by the scattered light background. In this case the maximal diffraction efficiency η max = 0.05% and the maximal self-enhancement factor ξ max = 5.0, compared to η max = 15% and ξ max = 12.3 in the optimal M = 1.0000 case. In the case of two-beam holographic grating recording the maximal diffraction efficiency increases when M is increased, whereas sensitivity decreases. A simple model, based on linear recording with the spatial light intensity distribution governed by M and including intensity-dependent material photosensitivity and grating relaxation, is proposed to explain these results. In the case of coherent self-enhancement both the maximal diffraction efficiency and sensitivity increase with fringe visibility M. This can be explained by the fact that mechanical stress modulation during the initial grating recording depending on M is followed by relaxational structural changes reinforcing the coherent self-enhancement effect. The developed approach may explain the absence of this effect in some azobenzene oligomer films.

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Section: Resultssupporting

confidence: 81%

Recording of holographic gratings and their coherent self-enhancement in an a-As2S3 film with a minimum light intensity modulation

Ozols¹,

Augustovs²,

Saharov³

2012

Lith. J. Phys.

Self Cite

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“…[1][2][3][4][5][6], и со временем расширя-ются области применения указанных материалов. Этому способствует уникальность их электронных свойств, в частности прозрачность в видимой и ближней инфра-красной (ИК) областях, высокая фоточувствительность, оптическая нелинейность, такие параметры, как показа-тель преломления света, край оптического поглощения.…”

Section: Introductionunclassified

Влияние примеси самария на структуру и морфологию поверхности халькогенидного стеклообразного полупроводника Se-=SUB=-95-=/SUB=-Te-=SUB=-5-=/SUB=-

Мехтиева¹,

Атаева²,

Isaev³

et al. 2017

Физика И Техника Полупроводников

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Методами рентгеновской дифракции и атомно-силовой микроскопии исследованы структура и морфология поверхности пленок Se95Te5, а также влияние на них легирования самарием. C использованием параметров первого резкого дифракционного максимума (FSDP), наблюдаемого в картинах распределения интенсивности дифракции рентгеновских лучей, определены численные значения параметров локальной структуры, в частности "квазипериод" флуктуаций плотности, длина корреляции, диаметры нанопустот. Кроме того, определены численные значения амплитудных параметров шероховатости поверхности. Установлено, что с увеличением процентного содержания примеси самария наблюдается рост разупорядочения в атомной структуре и рост неоднородностей на поверхности исследуемых пленок. DOI: 10.21883/FTP.2017.06.44561.8228

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“…The changes are usually larger for PSC than for RSC; however, after holographic recording RSC can lead to significant effects such as relaxational self-enhancement of recorded holograms. RSC also influence hologram recording [10].…”

Section: Introductionmentioning

confidence: 99%

Recording of holographic gratings and their coherent self-enhancement in an a-As2S3 film with a minimum light intensity modulation

Ozols¹,

Augustovs²,

Saharov³

2012

Lith. J. Phys.

Self Cite

View full text Add to dashboard Cite

The holographic grating recording efficiency and the coherent self-enhancement efficiency of gratings are experimentally studied depending on the recording light interference fringe visibility in an a-As 2 S 3 chalcogenide film in order to find the minimum visibility. The minimum fringe visibility M min = 3.6×10 -4 is found, which is determined by the scattered light background. In this case the maximal diffraction efficiency η max = 0.05% and the maximal self-enhancement factor ξ max = 5.0, compared to η max = 15% and ξ max = 12.3 in the optimal M = 1.0000 case. In the case of two-beam holographic grating recording the maximal diffraction efficiency increases when M is increased, whereas sensitivity decreases. A simple model, based on linear recording with the spatial light intensity distribution governed by M and including intensity-dependent material photosensitivity and grating relaxation, is proposed to explain these results. In the case of coherent self-enhancement both the maximal diffraction efficiency and sensitivity increase with fringe visibility M. This can be explained by the fact that mechanical stress modulation during the initial grating recording depending on M is followed by relaxational structural changes reinforcing the coherent self-enhancement effect. The developed approach may explain the absence of this effect in some azobenzene oligomer films.

show abstract

Holographic recording in amorphous As2S3 films at 633nm

Cited by 29 publications

References 17 publications

Recording of holographic gratings and their coherent self-enhancement in an a-As<sub>2</sub>S<sub>3</sub> film with a minimum light intensity modulation

Recording of holographic gratings and their coherent self-enhancement in an a-As<sub>2</sub>S<sub>3</sub> film with a minimum light intensity modulation

Влияние примеси самария на структуру и морфологию поверхности халькогенидного стеклообразного полупроводника Se-=SUB=-95-=/SUB=-Te-=SUB=-5-=/SUB=-

Recording of holographic gratings and their coherent self-enhancement in an a-As<sub>2</sub>S<sub>3</sub> film with a minimum light intensity modulation

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