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Nano-modification inside transparent materials by femtosecond laser single beam

Nano-modification inside transparent materials by femtosecond laser single beam
Nano-modification inside transparent materials by femtosecond laser single beam
Periodic nanostructures along the polarization direction of light are observed inside silica glasses and tellurium dioxide single crystal after irradiation by a focused single femtosecond laser beam. Backscattering electron images of the irradiated spot inside silica glass reveal a periodic structure of stripe-like regions of ~20 nm width with a low oxygen concentration. In the case of the tellurium dioxide single crystal, secondary electron images within the focal spot show the formation of a periodic structure of voids with ~30 nm width. Oxygen defects in a silica glass and voids in a tellurium dioxide single crystal are aligned perpendicular to the laser polarization direction. These are the smallest nanostructures below the diffraction limit of light, which are formed inside transparent materials. The phenomenon is interpreted in terms of interference between the incident light field and the electric field of electron plasma wave generated in the bulk of material.
ultrashort pulse laser, nanostructure, interference, plasma
0217-9849
225-238
Shimotsuma, Yasuhiko
0664279b-def2-41d4-a5ec-207ce02013a7
Hirao, Kazuyuki
5cc5061d-6217-49ae-bc92-ff5b72b9c6c2
Qiu, Jiarong
befa87a1-4795-4e67-b74f-81239eee689c
Kazansky, Peter G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Shimotsuma, Yasuhiko
0664279b-def2-41d4-a5ec-207ce02013a7
Hirao, Kazuyuki
5cc5061d-6217-49ae-bc92-ff5b72b9c6c2
Qiu, Jiarong
befa87a1-4795-4e67-b74f-81239eee689c
Kazansky, Peter G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c

Shimotsuma, Yasuhiko, Hirao, Kazuyuki, Qiu, Jiarong and Kazansky, Peter G. (2005) Nano-modification inside transparent materials by femtosecond laser single beam. Modern Physics Letters B, 19 (5), 225-238. (doi:10.1142/S0217984905008281).

Record type: Article

Abstract

Periodic nanostructures along the polarization direction of light are observed inside silica glasses and tellurium dioxide single crystal after irradiation by a focused single femtosecond laser beam. Backscattering electron images of the irradiated spot inside silica glass reveal a periodic structure of stripe-like regions of ~20 nm width with a low oxygen concentration. In the case of the tellurium dioxide single crystal, secondary electron images within the focal spot show the formation of a periodic structure of voids with ~30 nm width. Oxygen defects in a silica glass and voids in a tellurium dioxide single crystal are aligned perpendicular to the laser polarization direction. These are the smallest nanostructures below the diffraction limit of light, which are formed inside transparent materials. The phenomenon is interpreted in terms of interference between the incident light field and the electric field of electron plasma wave generated in the bulk of material.

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More information

Published date: 2005
Keywords: ultrashort pulse laser, nanostructure, interference, plasma

Identifiers

Local EPrints ID: 20999
URI: https://eprints.soton.ac.uk/id/eprint/20999
ISSN: 0217-9849
PURE UUID: d6b4de36-bfc9-4b85-b082-be057e6e5c08

Catalogue record

Date deposited: 07 Mar 2006
Last modified: 15 Jul 2019 19:25

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