Accession Number:

AD1085816

Title:

Synthesis of Multiphase Metallic Oxides by Femtosecond Laser Irradiation of Metallic Thin Films

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Corporate Author:

CENTRO DE INVESTIGACION CIENTIFICA Y DE EDUCACION SUPERIOR DE ENSENADA, BAJA CALIFORNIA ENSENADA Mexico

Report Date:

2019-04-05

Abstract:

We studied the formation of metallic oxides under femtosecond fs laser irradiation at MHz repetition rate, for different atmospheres on metallic films. We found that the synthesis of molybdenum oxides is significantly affected by the processing atmosphere i.e. ambient air vs pure oxygen. The oxide formation under the same laser irradiation conditions produces distinct crystalline phases depending on the processing atmosphere. In the case of ZnO synthesis by using fs laser pulses we found that the laser irradiation conditions determine the crystalline quality of the obtained ZnO. Under certain laser irradiation conditions the density of point defects increases, which is revealed by microRaman spectroscopy and cathodoluminescence measurements. ZnO nanoparticlesNPs were proven to produce second harmonic generation when irradiated with fs laser pulses, the features of the SHG signal shows unexpected polarization dependence it is related to the randomly oriented NPs.

Descriptive Note:

Technical Report,01 Feb 2015,31 Jan 2017

Pages:

0014

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Distribution Statement:

Approved For Public Release;

File Size:

7.20MB

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