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Femtosecond laser printed microoptics in hydrogenated amorphous silicon

Femtosecond laser printed microoptics in hydrogenated amorphous silicon
Femtosecond laser printed microoptics in hydrogenated amorphous silicon
Conventional optics (e.g. lenses or mirrors) manipulates the phase via optical path difference by controlling thickness or refractive index of material. Recently, a promising type of optics emerged which exploits geometric phase shift, when a lightwave is transformed by parameter other than optical path difference, e.g. polarization. Here, wavefront is modified by introducing spatially varying anisotropy and is a result of Panchatraman-Berry phase [1]. Theoretically any phase pattern can be achieved solely by means of geometric phase with efficiencies reaching 100% [2]. This allows continuous optical phase shifts and without phase resets, in stark contrast to conventional elements, wherein phase profiles are encoded as discrete optical path variations in refractive index or thickness, limiting performance. The geometric phase optics is a promising alternative for controlling and manipulating light, but it stumbles on the lack of adequate fabrication technology.
Drevinskas, Rokas
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Beresna, Martynas
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Gecevičius, Mindaugas
271576ee-dd9d-40b3-ab2f-19686b91dc64
Khenkin, Mark
83394eeb-b2c5-4797-9297-f5f2dbbc44ce
Kazanskii, Andrey G.
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Konkov, Oleg I.
ca8484e4-64f2-499b-9e33-6f4d719a6be4
Svirko, Yuri P.
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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
Konkov, Oleg I.
ca8484e4-64f2-499b-9e33-6f4d719a6be4
Svirko, Yuri P.
d64a0366-ef29-4a31-878e-54f7536816ac
Kazansky, Peter G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c

Drevinskas, Rokas, Beresna, Martynas, Gecevičius, Mindaugas, Khenkin, Mark, Kazanskii, Andrey G., Konkov, Oleg I., Svirko, Yuri P. and Kazansky, Peter G. (2015) Femtosecond laser printed microoptics in hydrogenated amorphous silicon. The European Conference on Lasers and Electro-Optics. 21 - 25 Jun 2015.

Record type: Conference or Workshop Item (Paper)

Abstract

Conventional optics (e.g. lenses or mirrors) manipulates the phase via optical path difference by controlling thickness or refractive index of material. Recently, a promising type of optics emerged which exploits geometric phase shift, when a lightwave is transformed by parameter other than optical path difference, e.g. polarization. Here, wavefront is modified by introducing spatially varying anisotropy and is a result of Panchatraman-Berry phase [1]. Theoretically any phase pattern can be achieved solely by means of geometric phase with efficiencies reaching 100% [2]. This allows continuous optical phase shifts and without phase resets, in stark contrast to conventional elements, wherein phase profiles are encoded as discrete optical path variations in refractive index or thickness, limiting performance. The geometric phase optics is a promising alternative for controlling and manipulating light, but it stumbles on the lack of adequate fabrication technology.

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More information

Published date: 2015
Additional Information: CK_14_4
Venue - Dates: The European Conference on Lasers and Electro-Optics, 2015-06-21 - 2015-06-25
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 384263
URI: https://eprints.soton.ac.uk/id/eprint/384263
PURE UUID: 8ddfcd65-f774-4c0b-9b4b-5d1790091eb9

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Date deposited: 26 Nov 2015 14:33
Last modified: 19 Nov 2018 17:30

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Contributors

Author: Rokas Drevinskas
Author: Mindaugas Gecevičius
Author: Mark Khenkin
Author: Andrey G. Kazanskii
Author: Oleg I. Konkov
Author: Yuri P. Svirko

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