A Simple Method for Photoconductivity Measurement in Lithium Niobate
A simple and effective technique to characterize the photoconductivity (PC) of lithium niobate is presented. The technique is based on the modulation of the external field and on the observation of the optical response of the material as a function of the intensity of a gaussian beam using a Tardy’s...
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doaj-b45e577edf404d4e9ec5461bc429b3002020-11-25T03:10:45ZengMDPI AGCrystals2073-43522020-06-011046146110.3390/cryst10060461A Simple Method for Photoconductivity Measurement in Lithium NiobateMarco Bazzan0Laurent Guilbert1Michel Aillerie2Dipartimento di Fisica e Astronomia, Università di Padova, Via Marzolo 8, 35131 Padova, ItalyCentraleSupélec, Université de Lorraine, LMOPS, F-57000 Metz, FranceCentraleSupélec, Université de Lorraine, LMOPS, F-57000 Metz, FranceA simple and effective technique to characterize the photoconductivity (PC) of lithium niobate is presented. The technique is based on the modulation of the external field and on the observation of the optical response of the material as a function of the intensity of a gaussian beam using a Tardy’s polarimetric setup in the <inline-formula> <math display="inline"> <semantics> <msub> <mi>r</mi> <mn>22</mn> </msub> </semantics> </math> </inline-formula> configuration. When the temporal period of the modulation is larger than the Maxwell time of the material, the effect of the PC can be detected observing the kinetics of the screening effect of the external applied field. This approach allows measuring a wide dynamic range up to high light intensities with good accuracy using a standard oscilloscope and with no need for charge collection electrodes. The technique is demonstrated by comparing two samples, the first possessing a standard congruent composition, the second being doped with Zn in order to boost the PC.https://www.mdpi.com/2073-4352/10/6/461photoconductivityexperimental techniqueslithium niobate |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Marco Bazzan Laurent Guilbert Michel Aillerie |
spellingShingle |
Marco Bazzan Laurent Guilbert Michel Aillerie A Simple Method for Photoconductivity Measurement in Lithium Niobate Crystals photoconductivity experimental techniques lithium niobate |
author_facet |
Marco Bazzan Laurent Guilbert Michel Aillerie |
author_sort |
Marco Bazzan |
title |
A Simple Method for Photoconductivity Measurement in Lithium Niobate |
title_short |
A Simple Method for Photoconductivity Measurement in Lithium Niobate |
title_full |
A Simple Method for Photoconductivity Measurement in Lithium Niobate |
title_fullStr |
A Simple Method for Photoconductivity Measurement in Lithium Niobate |
title_full_unstemmed |
A Simple Method for Photoconductivity Measurement in Lithium Niobate |
title_sort |
simple method for photoconductivity measurement in lithium niobate |
publisher |
MDPI AG |
series |
Crystals |
issn |
2073-4352 |
publishDate |
2020-06-01 |
description |
A simple and effective technique to characterize the photoconductivity (PC) of lithium niobate is presented. The technique is based on the modulation of the external field and on the observation of the optical response of the material as a function of the intensity of a gaussian beam using a Tardy’s polarimetric setup in the <inline-formula> <math display="inline"> <semantics> <msub> <mi>r</mi> <mn>22</mn> </msub> </semantics> </math> </inline-formula> configuration. When the temporal period of the modulation is larger than the Maxwell time of the material, the effect of the PC can be detected observing the kinetics of the screening effect of the external applied field. This approach allows measuring a wide dynamic range up to high light intensities with good accuracy using a standard oscilloscope and with no need for charge collection electrodes. The technique is demonstrated by comparing two samples, the first possessing a standard congruent composition, the second being doped with Zn in order to boost the PC. |
topic |
photoconductivity experimental techniques lithium niobate |
url |
https://www.mdpi.com/2073-4352/10/6/461 |
work_keys_str_mv |
AT marcobazzan asimplemethodforphotoconductivitymeasurementinlithiumniobate AT laurentguilbert asimplemethodforphotoconductivitymeasurementinlithiumniobate AT michelaillerie asimplemethodforphotoconductivitymeasurementinlithiumniobate AT marcobazzan simplemethodforphotoconductivitymeasurementinlithiumniobate AT laurentguilbert simplemethodforphotoconductivitymeasurementinlithiumniobate AT michelaillerie simplemethodforphotoconductivitymeasurementinlithiumniobate |
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1724657527720771584 |