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Giant birefringence and dichroism induced by ultrafast laser pulses in hydrogenated amorphous silicon

Giant birefringence and dichroism induced by ultrafast laser pulses in hydrogenated amorphous silicon
Giant birefringence and dichroism induced by ultrafast laser pulses in hydrogenated amorphous silicon
A femto- and picosecond laser assisted periodic nanostructuring of hydrogenated amorphous silicon (α-Si:H) is demonstrated. The grating structure with the subwavelength modulation of refractive index shows form birefringence (Delta.n ~ -0.6) which is two orders of magnitude higher than commonly observed in uniaxial crystals and femtosecond laser nanostructured silica glass. The laser-induced giant birefringence and dichroism in α-Si:H film introduce extra dimensions to the polarization sensitive laser writing with applications that include data storage, security marking, and flat optics.
0003-6951
1-6
Drevinskas, Rokas
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Beresna, Martynas
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Gecevičius, Mindaugas
271576ee-dd9d-40b3-ab2f-19686b91dc64
Khenkin, Mark
83394eeb-b2c5-4797-9297-f5f2dbbc44ce
Kazanskii, Andrey G.
14a5eeab-a889-4cb6-8f66-e22967512252
Matulaitienė, Ieva
69937059-3800-407e-b821-6bf13546739f
Niaura, Gediminas
faa0b8ca-0dfe-4574-98db-0af282d8757a
Konkov, Oleg I.
ca8484e4-64f2-499b-9e33-6f4d719a6be4
Terukov, Eugene I.
772b2015-7a2b-4d31-8a32-d9282a25ff60
Svirko, Yu. P.
7f25d295-99e3-465b-80f1-121c69f9e0ad
Kazansky, Peter G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Drevinskas, Rokas
23f858b5-8750-4113-ba11-49cfefc3dbb7
Beresna, Martynas
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Gecevičius, Mindaugas
271576ee-dd9d-40b3-ab2f-19686b91dc64
Khenkin, Mark
83394eeb-b2c5-4797-9297-f5f2dbbc44ce
Kazanskii, Andrey G.
14a5eeab-a889-4cb6-8f66-e22967512252
Matulaitienė, Ieva
69937059-3800-407e-b821-6bf13546739f
Niaura, Gediminas
faa0b8ca-0dfe-4574-98db-0af282d8757a
Konkov, Oleg I.
ca8484e4-64f2-499b-9e33-6f4d719a6be4
Terukov, Eugene I.
772b2015-7a2b-4d31-8a32-d9282a25ff60
Svirko, Yu. P.
7f25d295-99e3-465b-80f1-121c69f9e0ad
Kazansky, Peter G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c

Drevinskas, Rokas, Beresna, Martynas, Gecevičius, Mindaugas, Khenkin, Mark, Kazanskii, Andrey G., Matulaitienė, Ieva, Niaura, Gediminas, Konkov, Oleg I., Terukov, Eugene I., Svirko, Yu. P. and Kazansky, Peter G. (2015) Giant birefringence and dichroism induced by ultrafast laser pulses in hydrogenated amorphous silicon. Applied Physics Letters, 106 (17), 1-6. (doi:10.1063/1.4919538).

Record type: Article

Abstract

A femto- and picosecond laser assisted periodic nanostructuring of hydrogenated amorphous silicon (α-Si:H) is demonstrated. The grating structure with the subwavelength modulation of refractive index shows form birefringence (Delta.n ~ -0.6) which is two orders of magnitude higher than commonly observed in uniaxial crystals and femtosecond laser nanostructured silica glass. The laser-induced giant birefringence and dichroism in α-Si:H film introduce extra dimensions to the polarization sensitive laser writing with applications that include data storage, security marking, and flat optics.

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More information

Accepted/In Press date: 20 April 2015
Published date: 27 April 2015
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 378660
URI: https://eprints.soton.ac.uk/id/eprint/378660
ISSN: 0003-6951
PURE UUID: e92e73be-a8d5-4e7f-8d5b-68dca6146a8a

Catalogue record

Date deposited: 10 Jul 2015 14:12
Last modified: 19 Nov 2018 17:31

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