Quadratic nonlinear optical properties of the organic N-benzyl-2-methyl-4-nitroaniline (BNA) biaxial crystal

We performed the direct measurement of second harmonic generation and sum frequency generation phase-matching directions in the organic N-benzyl-2-methyl-4-nitroaniline crystal over its visible and near-infrared transparency range. The fit of these data allowed us to refine the Sellmeier equations o...

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Bibliographic Details
Published in:Optics letters 2018-04, Vol.43 (8), p.1818-1821
Main Authors: Bernerd, Cyril, Segonds, Patricia, Debray, Jérôme, Notake, Takashi, Koyama, Mio, Minamide, Hiroaki, Ito, Hiromasa, Boulanger, Benoît
Format: Article
Language:English
Subjects:
Mathematical analysis
Nonlinear optics
Optical properties
Phase matching
Physics
Refractivity
Second harmonic generation
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Summary:We performed the direct measurement of second harmonic generation and sum frequency generation phase-matching directions in the organic N-benzyl-2-methyl-4-nitroaniline crystal over its visible and near-infrared transparency range. The fit of these data allowed us to refine the Sellmeier equations of the three principal refractive indices in this range. With these equations, we improved the calculated tuning curves of terahertz emission from a phase-matched difference frequency process. We also determined the absolute magnitude of the d nonlinear coefficient.
ISSN:0146-9592
1539-4794
DOI:10.1364/ol.43.001818