Cojocaru, CrinaWang, B.Switkowski, KrzysztofKrolikowski, WieslawScalora, M.Trull, JoseTaccheo, S.Mackenzie, J.Ferrari, M.2020-07-062020-07-06April 22-2C. Cojocaru, B. Wang, K. Switkowski, W. Krolikowski, M. Scalora, J. Trull, "Analysis of disordered nonlinear domain statistics via second harmonic diffraction," Proc. SPIE 10683, Fiber Lasers and Glass Photonics: Materials through Applications, 106830E (17 May 2018); doi: 10.1117/12.2322627978-151061892-30277-786Xhttp://hdl.handle.net/1885/205815We present an indirect and non-destructive optical method for domain statistic characterization in disordered nonlinear crystals, having a spatially random distribution of ferroelectric domains with homogeneous refractive index. This method, based on a combination of numerical simulations and experimental measurements, analyses the wavelengthdependent second harmonic spatial distribution. We apply this technique to the characterization of two different random media, with drastically different statistical distributions of ferroelectric domains.Authors acknowledge financial support by: Spanish Ministerio de Educación y Ciencia (project FIS2011-29734-C02-01), US Army ACQ-RDECOM (grants W911NF-12-1-0201 and W911NF-16-1-0563) and Australian Research Council and Qatar National Research Fund (NPRP8-246-1-060).application/pdfen-AU© 2018 SPIEnonlinear opticsharmonic generationrandom nonlinear materialsnonlinear domain statisticsnondestructive optical method.201810.1117/12.23226272020-03-08