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Self-organized nanogratings in glass irradiated by ultrashort light pulses

Self-organized nanogratings in glass irradiated by ultrashort light pulses
Self-organized nanogratings in glass irradiated by ultrashort light pulses
Periodic nanostructures are observed inside silica glass after irradiation by a focused beam of a femtosecond Ti:sapphire laser. Backscattering electron images of the irradiated spot reveal a periodic structure of stripelike regions of ~20 nm width with a low oxygen concentration, which are aligned perpendicular to the laser polarization direction. These are the smallest embedded structures ever created by light. The period of self-organized grating structures can be controlled from ~140 to 320 nm by the pulse energy and the number of irradiated pulses. The phenomenon is interpreted in terms of interference between the incident light field and the electric field of the bulk electron plasma wave, resulting in the periodic modulation of electron plasma concentration and the structural changes in glass.
0031-9007
247405-[4pp]
Shimotsuma, Y.
87dadd83-161c-47db-b2d5-d9b35426760e
Kazansky, P.G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Qiu, J.
45a8b2f4-9b82-447c-8bcf-7c01238ab774
Hirao, K.
fa81b51e-88a4-496f-bf00-1eca4fd5d7ca
Shimotsuma, Y.
87dadd83-161c-47db-b2d5-d9b35426760e
Kazansky, P.G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Qiu, J.
45a8b2f4-9b82-447c-8bcf-7c01238ab774
Hirao, K.
fa81b51e-88a4-496f-bf00-1eca4fd5d7ca

Shimotsuma, Y., Kazansky, P.G., Qiu, J. and Hirao, K. (2003) Self-organized nanogratings in glass irradiated by ultrashort light pulses. Physical Review Letters, 91 (24), 247405-[4pp]. (doi:10.1103/PhysRevLett.91.247405).

Record type: Article

Abstract

Periodic nanostructures are observed inside silica glass after irradiation by a focused beam of a femtosecond Ti:sapphire laser. Backscattering electron images of the irradiated spot reveal a periodic structure of stripelike regions of ~20 nm width with a low oxygen concentration, which are aligned perpendicular to the laser polarization direction. These are the smallest embedded structures ever created by light. The period of self-organized grating structures can be controlled from ~140 to 320 nm by the pulse energy and the number of irradiated pulses. The phenomenon is interpreted in terms of interference between the incident light field and the electric field of the bulk electron plasma wave, resulting in the periodic modulation of electron plasma concentration and the structural changes in glass.

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Published date: 2003

Identifiers

Local EPrints ID: 13830
URI: http://eprints.soton.ac.uk/id/eprint/13830
ISSN: 0031-9007
PURE UUID: 85224b2c-583b-4634-bdd2-0c5b5b238518

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Date deposited: 06 Jan 2005
Last modified: 15 Mar 2024 05:13

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Contributors

Author: Y. Shimotsuma
Author: P.G. Kazansky
Author: J. Qiu
Author: K. Hirao

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