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Volume 4 Nano Research & Applications
ISSN: 2471-9838
Notes:
JOINT EVENT
October 04-05, 2018 Moscow, Russia
&
2nd Edition of International Conference on
26th International Conference on Advanced Nanotechnology
Materials Technology and Manufacturing Innovations
Advanced Nanotechnology 2018
& Materials-Manufacturing 2018
October 04-05, 2018 Page 68
Lei Pan
Harbin Institute of Technology, China
Lei Pan, Nano Res Appl 2018, Volume 4
DOI: 10.21767/2471-9838-C5-020
Shadow boxing with laser: Laser damage resistance of three-dimensional photonic crystals
The laser damage behavior of three-dimensional photonic crystals (3D-PCs) with an opal structure is investigated
using both experimental and simulation methods. Polystyrene (PS) colloidal crystals films with a reflection peak at
1064 nm are used as the model material. Disordered films (DF) are fabricated with PS microspheres as contrast samples.
The laser-induced damage threshold (LIDT) of 3D-PCs is tested, which is as 2.35 times high as the LIDT of DF. All laser
damages are derived from defects in 3D-PCs, implying that the LIDT of ideal 3D-PCs will be significantly increased.
The simulation results show that the electric field is contained in the pores of 3D-PCs while it is reduced in the PS
microspheres, which may decrease the absorption of laser energy by 3D-PCs. In contrast, the electric field distribution is
irregular in DF. Enhanced electric field areas are located in both the pores and microspheres of DF. Considering higher
electric field intensity causes more energy absorption and higher temperature, the DF has a lower LIDT. The 3D-PCs
structure uses ordered vacancy to contain and strike back laser energy and can increase the LIDT without changing the
chemical composition of materials.
Biography
Lei Pan is a Research Associate in School of Chemistry and Chemical Engineering at Harbin Institute of Technology. He has completed his BE and ME
degrees at Tianjin University and PhD at Harbin Institute of Technology in 2015. His current research interests mainly focus on “Design and fabrication
of well-defined nano-structured materials and their applications for optical and thermal field”.