Investigating the effect of induced optical inhomogeneity in ferroelectric crystal semiconductor Sn2P2S6 by optical second harmonic generation method
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BREKHOV, Kirill, ILIN, N., GRISHUNIN, K., BOLOTOV, A., MISHINA, E.. Investigating the effect of induced optical inhomogeneity in ferroelectric crystal semiconductor Sn2P2S6 by optical second harmonic generation method. In: Materials Science and Condensed Matter Physics, Ed. 7, 16-19 septembrie 2014, Chișinău. Chișinău, Republica Moldova: Institutul de Fizică Aplicată, 2014, Editia 7, p. 110.
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Materials Science and Condensed Matter Physics
Editia 7, 2014
Conferința "Materials Science and Condensed Matter Physics"
7, Chișinău, Moldova, 16-19 septembrie 2014

Investigating the effect of induced optical inhomogeneity in ferroelectric crystal semiconductor Sn2P2S6 by optical second harmonic generation method


Pag. 110-110

Brekhov Kirill, Ilin N., Grishunin K., Bolotov A., Mishina E.
 
Moscow Technological University (MIREA)
 
Disponibil în IBN: 3 martie 2019


Rezumat

One of the main problems of modern micro - and nanoelectronics is the search for new materials to create rich electronic component base of a new generation, as well as a comprehensive study of the functional and structural properties of these materials. One of such materials is Sn2P2S6. It is expected the optical control possibility using femtosecond laser pulses of the polarization state by coherent quantum control of phonons for a new generation of high-speed processing electronic devices and storages of information. Optical properties of a crystal Sn2P2S6 thoroughly investigated since 2004. Already received a lot of data, such as the dispersion of refractive indices of the crystal [1], the photorefractive properties, appeared to work to strengthen the photorefractive effect by doping the crystal [2-4]. The possibility of creating a photorefractive waveguide formed on the doped Tin-hypothiodiphosphate Sn2P2S6 [4-6]. We have conducted experimental studies aimed at the characterization of the structural parameters of the crystal Sn2P2S6 arising under the influence of femtosecond laser pulses. Investigations of nonlinear optical properties of the crystal, as well as a comparative analysis of linear - and the nonlinear optical response. In addition, investigated the temperature dependence of the linear and nonlinear optical response of the crystal in the phase transition temperature (337K). At this temperature, the crystal undergoes a second order phase transition of the displacement type, and proceeds from the ferroelectric phase to the paraelectric phase (P21 / n). The results of basic research into the processes and patterns established in this paper can be used to produce new scientific knowledge in the field of solid state physics and nanotechnology, as well as the development and refinement used in these areas of theoretical models. This work is supported partly by Russian Founadion of Basic Research and Russian Ministry of Science and Education.