12 September 2003 Second harmonic characteristics of photonic composite glass layers with ZnO nanocrystallites for ultrafast applications
Author Affiliations +
Abstract
ZnO nanocrystalline thin layers are of growing interest for ultrafast optical applications. Previous investigations delivered different values of second order susceptibilities. The quantitative contribution of grain structure - depending on fabrication procedure - is not well understood. For our investigations, pure and doped polycrystalline and amorphous ZnO thin filmes of 0.1 to 1.5 μm thickness have been prepared by spray pyrolysis and alternative techniques. Texture, thickness and further structural properties of the layer have been characterized by SEM, AFM, XRD, and optical spectroscopy. Using 20-fs Ti:Sa laser pulses centered at 800 nm, we measured the angular dependence of SHG intensity and determined second order susceptibilities. For a small range of crystallinity parameters, pronouced SHG efficiencies appear. From our experiments, design parameters for ZnO nanolayers can be derived which enable a tailoring of sandwich structures for advanced non-linear processing and femtosecond laser autocorrelation.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Uwe Neumann, Ruediger Grunwald, Uwe Griebner, Guenter Steinmeyer, Michael Woerner, Wolfgang Seeber, "Second harmonic characteristics of photonic composite glass layers with ZnO nanocrystallites for ultrafast applications", Proc. SPIE 4972, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications II, (12 September 2003); doi: 10.1117/12.478546; https://doi.org/10.1117/12.478546
PROCEEDINGS
10 PAGES


SHARE
Back to Top