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Self-assembled periodic sub-wavelength structures by femtosecond laser direct writing

Self-assembled periodic sub-wavelength structures by femtosecond laser direct writing
Self-assembled periodic sub-wavelength structures by femtosecond laser direct writing
Self-assembled, sub-wavelength periodic structures are induced in fused silica by a tightly focused, linearly polarized, femtosecond laser beam. Two different types of periodic structures, the main one with period (λE) in the direction of the laser beam polarization and the second with period (λk) in the direction of the light propagation, are identified from the cross-sectional images of the modified regions using scanning electron microscopy. We demonstrate the spatial coherence of these nanogratings in the plane perpendicular to the beam propagation direction. The range of effective pulse energy which could produce nanogratings narrows when the pulse repetition rate of writing laser increases. The period λE is proportional to the wavelength of the writing laser and period λk in the head of the modified region remains approximately the wavelength of light in fused silica.
1094-4087
10117-10124
Yang, Weijia
3e2abbc1-7212-48c2-b182-17f14e2ab2bd
Bricchi, Erica
d7b5197d-d574-4276-b2a9-74e7b2427970
Kazansky, Peter G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Bovatsek, James
d98e7409-f51d-424a-be95-3ec71004da82
Arai, Alan Y.
7950b764-c4bf-4dcf-8ab5-660bdf861489
Yang, Weijia
3e2abbc1-7212-48c2-b182-17f14e2ab2bd
Bricchi, Erica
d7b5197d-d574-4276-b2a9-74e7b2427970
Kazansky, Peter G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Bovatsek, James
d98e7409-f51d-424a-be95-3ec71004da82
Arai, Alan Y.
7950b764-c4bf-4dcf-8ab5-660bdf861489

Yang, Weijia, Bricchi, Erica, Kazansky, Peter G., Bovatsek, James and Arai, Alan Y. (2006) Self-assembled periodic sub-wavelength structures by femtosecond laser direct writing. Optics Express, 14 (21), 10117-10124. (doi:10.1364/OE.14.010117).

Record type: Article

Abstract

Self-assembled, sub-wavelength periodic structures are induced in fused silica by a tightly focused, linearly polarized, femtosecond laser beam. Two different types of periodic structures, the main one with period (λE) in the direction of the laser beam polarization and the second with period (λk) in the direction of the light propagation, are identified from the cross-sectional images of the modified regions using scanning electron microscopy. We demonstrate the spatial coherence of these nanogratings in the plane perpendicular to the beam propagation direction. The range of effective pulse energy which could produce nanogratings narrows when the pulse repetition rate of writing laser increases. The period λE is proportional to the wavelength of the writing laser and period λk in the head of the modified region remains approximately the wavelength of light in fused silica.

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Published date: 2006

Identifiers

Local EPrints ID: 46140
URI: http://eprints.soton.ac.uk/id/eprint/46140
ISSN: 1094-4087
PURE UUID: f2590238-2bd9-45a5-ab95-6b5ef2d2528a

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Date deposited: 22 May 2007
Last modified: 14 Sep 2021 20:25

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