Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Light Absorption Enhancement and Laser-Induced Damage Ability Improvement of AA 6061 with Non-porous Alumina /[email protected]2O3/SiO2 Functional Gradient Films

Version 1 : Received: 2 January 2022 / Approved: 12 January 2022 / Online: 12 January 2022 (13:50:07 CET)

How to cite: Yin, J.; Lu, L.; Cui, Y.; Cao, Y.; Du, Y. Light Absorption Enhancement and Laser-Induced Damage Ability Improvement of AA 6061 with Non-porous Alumina /[email protected]2O3/SiO2 Functional Gradient Films. Preprints 2022, 2022010169 (doi: 10.20944/preprints202201.0169.v1). Yin, J.; Lu, L.; Cui, Y.; Cao, Y.; Du, Y. Light Absorption Enhancement and Laser-Induced Damage Ability Improvement of AA 6061 with Non-porous Alumina /[email protected]/SiO2 Functional Gradient Films. Preprints 2022, 2022010169 (doi: 10.20944/preprints202201.0169.v1).

Abstract

Numerical calculations of ultraviolet to near-infrared absorption spectra by cadmium selenide quantum dots (CdSe QDs) doped in anodic aluminum oxide pores were performed using a finite-difference time-domain model. The height, diameter, and periodic spacing of the pores were optimized. Light absorption by the dots was enhanced by increasing the height and decreasing the diameter of the pores. When the height was less than 1 μm, visible light absorption was enhanced as the spacing was reduced from 400 nm to 100 nm. No enhancement was observed for heights greater than 6 μm. Finally, the optical mode coupling of the aluminum oxide and the quantum dots was enhanced by decreasing the pore diameter and periodic spacing, and increasing the height. Laser ablation verified light absorption enhancement by the CdSe QDs. The experiment verified the improvement of the laser-induced damage ability with wavelength of 355-nm after aluminum alloy 6061 coated with functional films, which was fabricated based on numerical calculations.

Keywords

CdSe QDs; AA 6061; light absorption; laser ablation

Subject

ENGINEERING, Other

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