Effect of holographic grating period on its relaxation in a molecular glassy film

Ozols, Andris; Augustovs, Pēteris; Kokars, Valdis; Traskovskis, Kaspars; Saharov, D.

doi:10.1088/1757-899x/49/1/012043

Cited by 4 publications

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The absence of relaxational SE of HG in sample 8a, evidently, means that there are no mechanisms like periodically distributed mechanical stress induced HG enhancement as in a-As 2 S 3 films [2]. However, recently we have observed relaxational SE in other molecular glassy films [16].…”

Section: Resultsmentioning

confidence: 83%

Self-Enhancement of Scalar and Vector Holographic Gratings in Azobenzene Molecular Glassy Films

Ozols¹,

Kokars²,

Augustovs³

et al. 2014

OPJ

View full text Add to dashboard Cite

Self-enhancement (SE) effect of scalar and vector holographic gratings (HG) recorded in three different azobenzene molecular glassy films is experimentally studied in both transmission and reflection modes at 532 and 633 nm. The maximal SE factor (the ratio of diffraction efficiency to its initial value) SEF = 42 has been achieved. It is shown that the model of complementary HG can be applied also in scalar transmission thin HG case to explain coherent SE. The possibility of vector HG coherent SE in transmission mode is experimentally demonstrated for the first time (SEF = 4.3). The possibility of coherent HG SE in reflection mode is also established for the first time (SEF = 21). HG recording processes as well as coherent SE processes are found to be independent in transmission and reflection modes being determined by volume and surface relief HG, respectively. The permittivity gradient mechanism is proposed to explain the coherent SE of surface relief HG. Both HG recording and coherent SE efficiencies strongly decrease when HG period is decreased from 2 µm to 0.5 µm. No relaxational SE effect is found. Coherent SE effect in molecular glasses is found to be weaker than in inorganic materials.

show abstract

Section: Resultsmentioning

confidence: 83%

Self-Enhancement of Scalar and Vector Holographic Gratings in Azobenzene Molecular Glassy Films

Ozols¹,

Kokars²,

Augustovs³

et al. 2014

OPJ

View full text Add to dashboard Cite

show abstract

Photodesign and fabrication of surface relief gratings on films of polyimide-based supramolecular systems obtained using host-guest strategy

Sava¹,

Stoica²,

Topală

et al. 2022

Polymer

View full text Add to dashboard Cite

Dark relaxation of holographic gratings in azobenzene and chalcogenide films

Ozols

Augustovs

Ķēniņš

et al. 2015

IOP Conf. Ser.: Mater. Sci. Eng.

Self Cite

View full text Add to dashboard Cite

In recent years, a family of high performance piezoelectric materials for general and specialized applications was developed: PZT-43, PZT-46, PZT-47, PZT-48, PZT-50, all of them exhibit high dielectric, piezoelectric, and elastic characteristics. A specialized piezoceramic material NPZT-2 having d33 = 800 pC/N , ε33 Т /ε0 = 4600, ТС= 140 °С and exhibiting low sintering temperature was developed.Unique piezoceramic material TCVC-2 with d33 = 340 pC/N, d15 = 520 pC/N was developed, its working temperature equals 320°С. JSC Research Institute "Elpa" is the only Russian research and production company, owning piezoelectric film casting technology and having the full manufacturing cycle for multilayer piezoceramic actuators and sensors.

show abstract

Effect of holographic grating period on its relaxation in a molecular glassy film

Cited by 4 publications

References 10 publications

Self-Enhancement of Scalar and Vector Holographic Gratings in Azobenzene Molecular Glassy Films

Self-Enhancement of Scalar and Vector Holographic Gratings in Azobenzene Molecular Glassy Films

Photodesign and fabrication of surface relief gratings on films of polyimide-based supramolecular systems obtained using host-guest strategy

Dark relaxation of holographic gratings in azobenzene and chalcogenide films

Contact Info

Product

Resources

About