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We report the results of an experimental study on broadband second-harmonic (SH) parametric scattering in an un-poled strontium barium niobate (SBN) crystal with random-size ferroelectric domains. We consider different geometries of the interacting waves. The observed spatial distribution of the SHG is due to the larger facility to achieve phase matching conditions in the presence of disorder, and...
In this paper, a transverse quasi-phase-matched parametric upconversion is employed to realise a compact ultra-broadband correlator for characterisation of ultrashort pulses, thus bringing together the advantages of parametric processes in solid-state materials and the simplicity of the TPF method. Cross-correlations with reference pulses of known properties can be used in order to gain more information...
This paper reports the observation of femtosecond second harmonic generation (SHG) in unpoled SBN crystal with random ferroelectric domains. Both planar and conical emission geometries are studied using a non-amplified femtosecond pulse laser source. Efficiency of the SHG process and its spectral properties are also analyzed.
We study experimentally broadband noncollinear second-harmonic generation in unpoled Strontium Barium Niobate crystals. We show the effects of thermal self-focusing on the parametric conversion, including spatial localization of the second-harmonic, increased efficiency, and spectral broadening.
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