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Characterization of optical polarization converters made by femtosecond laser writing

Characterization of optical polarization converters made by femtosecond laser writing
Characterization of optical polarization converters made by femtosecond laser writing
Recently, new types of silica polarization converters fabricated by femtosecond lasers have been introduced. These devices use spatially arranged nanogratings found under certain femtosecond laser exposure conditions in fused silica to create arbitrary polarization states by shaping spatially and locally the retardance of an incoming beam. Using this principle, radial and azimuthal polarization converters were demonstrated. These devices make use of a large density of femtosecond laser spots, introducing localized defects, affecting the performance of the converter. To optimize the writing and the post-processing annealing step of these kind of devices, here we introduce a novel fluorescence lifetime imaging microscope (FLIM) working with deep UV (240-280 nm) wavelength excitations. Specifically, we demonstrate the potential of this technique and more generally, how it can be used for characterizing a variety of femtosecond laser induced modifications in fused silica. This UV-FLIM can be used with micro-fluidic and bio-samples to characterize temporal characteristics of fluorescence.
de Jong, C.J.
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Lajevardipour, A.
eea3b78a-a87a-460d-a48c-0349e88fe2b0
Gecevičius, M.
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Beresna, M.
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Seniutinas, G.
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Gervinskas, G.
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Buividas, R.
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Kazansky, P.G.
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Bellouard, Y.
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Clayton, A.H.A.
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Juodkazis, S.
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de Jong, C.J.
0713faed-e963-46e4-911f-a1d97d4bf9b5
Lajevardipour, A.
eea3b78a-a87a-460d-a48c-0349e88fe2b0
Gecevičius, M.
271576ee-dd9d-40b3-ab2f-19686b91dc64
Beresna, M.
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Seniutinas, G.
b73025ab-19f0-460e-a5bd-c3fa5b464c8d
Gervinskas, G.
1b8583b7-22c9-479f-a38c-39ff84359edf
Buividas, R.
40bef7be-7cc2-465d-801b-450958b1d9c5
Kazansky, P.G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Bellouard, Y.
66b556cd-9d79-4d65-a1c8-3fcb470a1368
Clayton, A.H.A.
5ca3b8ab-60b1-4fd0-b770-28616804c0f9
Juodkazis, S.
7331685d-c820-40cd-848e-8972fad41187

de Jong, C.J., Lajevardipour, A., Gecevičius, M., Beresna, M., Seniutinas, G., Gervinskas, G., Buividas, R., Kazansky, P.G., Bellouard, Y., Clayton, A.H.A. and Juodkazis, S. (2013) Characterization of optical polarization converters made by femtosecond laser writing. SPIE Micro+ Nano Materials, Devices and Applications, 89231E-89231E-8 (2013), Australia. 08 - 11 Dec 2013.

Record type: Conference or Workshop Item (Paper)

Abstract

Recently, new types of silica polarization converters fabricated by femtosecond lasers have been introduced. These devices use spatially arranged nanogratings found under certain femtosecond laser exposure conditions in fused silica to create arbitrary polarization states by shaping spatially and locally the retardance of an incoming beam. Using this principle, radial and azimuthal polarization converters were demonstrated. These devices make use of a large density of femtosecond laser spots, introducing localized defects, affecting the performance of the converter. To optimize the writing and the post-processing annealing step of these kind of devices, here we introduce a novel fluorescence lifetime imaging microscope (FLIM) working with deep UV (240-280 nm) wavelength excitations. Specifically, we demonstrate the potential of this technique and more generally, how it can be used for characterizing a variety of femtosecond laser induced modifications in fused silica. This UV-FLIM can be used with micro-fluidic and bio-samples to characterize temporal characteristics of fluorescence.

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More information

Published date: December 2013
Venue - Dates: SPIE Micro+ Nano Materials, Devices and Applications, 89231E-89231E-8 (2013), Australia, 2013-12-08 - 2013-12-11
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 367841
URI: http://eprints.soton.ac.uk/id/eprint/367841
PURE UUID: 844d81fe-de6b-40da-9969-65556ec48b85

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Date deposited: 17 Sep 2014 11:41
Last modified: 03 Apr 2019 16:30

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Contributors

Author: C.J. de Jong
Author: A. Lajevardipour
Author: M. Gecevičius
Author: M. Beresna
Author: G. Seniutinas
Author: G. Gervinskas
Author: R. Buividas
Author: P.G. Kazansky
Author: Y. Bellouard
Author: A.H.A. Clayton
Author: S. Juodkazis

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