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Fabrication of nano-grating inside transparent materials by using a single femtosecond laser beam

Fabrication of nano-grating inside transparent materials by using a single femtosecond laser beam
Fabrication of nano-grating inside transparent materials by using a single femtosecond laser beam
Femtosecond laser is under intense study as a new laser processing tool which can induce refractive index change and color center, etc. inside of transparent materials. Here, we report on the first observation of the formation of polarization-dependent nano-grating by irradiation of only single femtosecond laser beam inside silica glasses. This nano-grating was formed by the self-organization at intervals of 200 nm of generated oxygen defect in the laser focal point. The direction of nano-grating was controllable by laser polarization direction. Additionally, the periodicity was variable according to the irradiation laser light of energy and pulse number. We proposed a mechanism of this novel phenomenon containing the interference between the laser light (photon) and the generated plasma wave on the focal point.
5662
SPIE
Shimotsuma, Y.
87dadd83-161c-47db-b2d5-d9b35426760e
Qiu, J.
4b694246-0364-4c2e-a159-850c20bdff4f
Kazansky, P.G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Hirao, K.
fa81b51e-88a4-496f-bf00-1eca4fd5d7ca
Shimotsuma, Y.
87dadd83-161c-47db-b2d5-d9b35426760e
Qiu, J.
4b694246-0364-4c2e-a159-850c20bdff4f
Kazansky, P.G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Hirao, K.
fa81b51e-88a4-496f-bf00-1eca4fd5d7ca

Shimotsuma, Y., Qiu, J., Kazansky, P.G. and Hirao, K. (2004) Fabrication of nano-grating inside transparent materials by using a single femtosecond laser beam. In Fifth International Symposium on Laser Precision Microfabrication. SPIE.. (doi:10.1117/12.596318).

Record type: Conference or Workshop Item (Paper)

Abstract

Femtosecond laser is under intense study as a new laser processing tool which can induce refractive index change and color center, etc. inside of transparent materials. Here, we report on the first observation of the formation of polarization-dependent nano-grating by irradiation of only single femtosecond laser beam inside silica glasses. This nano-grating was formed by the self-organization at intervals of 200 nm of generated oxygen defect in the laser focal point. The direction of nano-grating was controllable by laser polarization direction. Additionally, the periodicity was variable according to the irradiation laser light of energy and pulse number. We proposed a mechanism of this novel phenomenon containing the interference between the laser light (photon) and the generated plasma wave on the focal point.

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Published date: 2004
Venue - Dates: 5th International Symposium on Laser Precision Microfabrication: LPM2004 (SPIE 5662), Japan, 2004-05-11 - 2004-05-14

Identifiers

Local EPrints ID: 443524
URI: http://eprints.soton.ac.uk/id/eprint/443524
PURE UUID: 445c8565-3ba2-4db5-b9c6-90d2e603921e

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Date deposited: 28 Aug 2020 16:30
Last modified: 07 Oct 2020 00:07

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