Laser operated optical features in β-BaTeMo2O9:Cr3+ nanocrystallites

被引：0
|
作者：
Majchrowski, A. [1 ]
Jaroszewicz, L. R. [1 ]
Fedorchuk, A. O. [2 ]
Kityk, I. V. [3 ]
机构：
[1] Mil Univ Technol, Inst Appl Phys, PL-00908 Warsaw, Poland
[2] Lviv Natl Univ Vet Med & Biotechnol, Dept Inorgan & Organ Chem, Lvov, Ukraine
[3] Czestochowa Tech Univ, Fac Elect Engn, Czestochowa, Poland
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 649卷
关键词：
Oxide nanoparticles; Optical properties; Nonlinear optical effects; BAND-STRUCTURE; CRYSTAL;
D O I：
10.1016/j.jallcom.2015.07.066
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
An increase of second order nonlinear optical efficiency was established for Cr3+ doped beta-BaTeMo2O9 (BTMO) nanocrystallites (with sizes varying within up to 150 nm range) under influence of two coherent beams of 532 nm nanosecond pulsed lasers at power densities up to 600 MW/cm(2). It was found that maximal enhancement of optical second harmonic generation was achieved for BTMO:Cr3+ nanocrystallites possessing sizes about 60-80 nm. Occurrence of some quasi-periodic space radial grating was observed as well. This is a consequence of competition between the photo-polarization and photothermal effects. Band structure simulations within a framework of the norm-conserving pseudopotential were performed. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：327 / 331
页数：5
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