Инд. авторы:	Kidyarov B.I., Kovalevskii V.I., Malinovsky V.K., Pugachev A.M., Rozhkov A.F.
Заглавие:	Generation of the second harmonic of laser radiation in powders of pure and doped potassium nitrate in the temperature interval of 25-160 °C
Библ. ссылка:	Kidyarov B.I., Kovalevskii V.I., Malinovsky V.K., Pugachev A.M., Rozhkov A.F. Generation of the second harmonic of laser radiation in powders of pure and doped potassium nitrate in the temperature interval of 25-160 °C // Optoelectronics, Instrumentation and Data Processing. - 2013. - Vol.49. - Iss. 3. - P.293-297. - ISSN 8756-6990. - EISSN 1934-7944.
Внешние системы:	SCOPUS: 2-s2.0-84880723065; DOI: 10.3103/S8756699013030114;
Реферат:	eng: The temperature dependence of the intensity of generation of the second harmonic of laser radiation with λ = 1.064 μm in various powders of extra-pure potassium nitrate is studied. The powders are obtained from crystals grown in a KNO3-Ba(NO3)2-H2O water-salt system. It is demonstrated that the centrosymmetric phase is crystallized from pure solutions. If Ba(NO3)2 is added to the solution, non-centrosymmetric phases of KNO3 or 2KNO3 · Ba(NO3)2 double salt are formed. As the crystals are cooled down from the temperature of 160 °C, the samples display a ferroelectric phase transition and a hysteresis relaxation dependence of the nonlinear optical response due to the method of sample preparation. © 2013 Allerton Press, Inc.
Ключевые слова:	crystal growth; ferroelectric phase transition; generation of the second harmonic; potassium nitrate; Ferroelectric phase transition; Non-centrosymmetric; Nonlinear optical response; Potassium nitrate; Sample preparation; Second harmonics; Temperature dependence; Temperature intervals; Crystal growth; Ferroelectric devices; Laser radiation; Nitrates; Powders;
Издано:	2013
Физ. характеристика:	с.293-297