Extremely efficient direct third harmonic generation in thin nanostructured films of ZnO

Georgi I. Petrov (1) , Vladislav I. Shcheslavskiy (1) , Igor Ozerov (2) , E. Chelnokov (2) , Wladimir Marine (2) , Vladislav V. Yakovlev (1)

1 University of Wisconsin - Milwaukee
2 CRMCN - Centre de recherche de la matière condensée et des nanosciences

We report a very efficient nonlinear optical conversion in thin films of wide band-gap materials. Very high conversion efficiency to the third harmonic radiation is achieved for an unamplified femtosecond Cr4+:forsterite laser in a sub-micron-thick film of a nanocrystalline ZnO pulsed-laser deposited on a fused silica substrate. Both the nonlinear optical coefficient and the coherence length are measured for film composed of 10-nm nanoclusters.

Domaines: Science des matériaux [cond-mat.mtrl-sci]; Optique [physics.optics]

Georgi I. Petrov, Vladislav I. Shcheslavskiy, Igor Ozerov, E. Chelnokov, Wladimir Marine, et al.. Extremely efficient direct third harmonic generation in thin nanostructured films of ZnO. Lasers and Applications in Science and Engineering, 2004, San Jose, Ca, United States. pp.166-172, ⟨10.1117/12.531623⟩. ⟨hal-00002218⟩