Open AccessAcentric langanite La_3Ga_55Nb_05O_14 crystal: a new nonlinear crystal for the generation of mid-infrared parametric light
Author(s) -
Dazhi Lu,
Tianxiang Xu,
Haohai Yu,
Qiang Fu,
Huaijin Zhang,
Patricia Segonds,
Benoı̀t Boulanger,
Xingyu Zhang,
Jing Wang
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.017603
Subject(s) - supercontinuum , optics , nonlinear optics , crystal (programming language) , sapphire , laser , materials science , infrared , parametric statistics , crystal optics , nonlinear system , refractive index , optoelectronics , physics , wavelength , mathematics , photonic crystal fiber , quantum mechanics , computer science , programming language , statistics
The mid-infrared spectral range extending from 2 to 6 μm is significant for scientific and technological applications. A promising nonlinear oxide crystal La 3 Ga 5.5 Nb 0.5 O 14 (LGN) is proposed and fully characterized for the first time to our knowledge. The transparency range extends between 0.28 and 7.4 μm. The two principal refractive indices were measured and we found that the nonlinear coefficient d11 = 3.0 ± 0.1 pm/V at 0.532 μm. The simultaneous fit of data allowed us to refine the Sellmeier equations of LGN and to calculate the tuning curves for optical parametric generation (OPG) pumped at 1.064 μm. Calculations are consistent with recorded data and also show the generation of a supercontinuum between 1.5 and 3.5 μm when pumped at 0.98 μm by a Ti:Sapphire laser.