Research article
Optical second harmonic generation in Yttrium Aluminum Borate single crystals (theoretical simulation and experiment)
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* Corresponding author: Ali H Reshak maalidph@yahoo.co.uk
1 Institute of Physical Biology-South Bohemia University, Institute of System Biology and Ecology-Academy of Sciences – Nove Hrady 37333, Czech Republic
2 Physics Department, Indian Institute of Technology, Kanpur (UP) 247667, India
3 Institute of Applied Physics, Military University of Technology, Kaliskiego 2, 00-908 Warsaw, Poland
4 Institue of Physics, J. Dlugosz University Czestochowa, Al. Armii Krajowej 13/15, Czestochowa, Poland, and Department of Chemistry, Silesian University of Technology, ul. Marcina Strzody 9, PL-44100 Gliwice, Poland
PMC Physics B 2008, 1:8 doi:10.1186/1754-0429-1-8
Published: 17 March 2008Abstract
Experimental measurements of the second order susceptibilities for the second harmonic
generation are reported for YAl3(BO3)4 (YAB) single crystals for the two principal tensor components xyz and yyy. First principle's
calculation of the linear and nonlinear optical susceptibilities for Yttrium Aluminum
Borate YAl3(BO3)4 (YAB) crystal have been carried out within a framework of the full-potential linear
augmented plane wave (FP-LAPW) method. Our calculations show a large anisotropy of
the linear and nonlinear optical susceptibilities. The observed dependences of the
second order susceptibilities for the static frequency limit and for the frequency
may be a consequence of different contribution of electron-phonon interactions. The
imaginary parts of the second order SHG susceptibility 
, 
, 
, and 
are evaluated. We find that the 2ω inter-band and intra-band contributions to the real and imaginary parts of 
show opposite signs. The calculated second order susceptibilities are in reasonable
good agreement with the experimental measurements.
PACS Codes: 71.15. Mb; 71.15.-m