Tin hypothiodiphosphate: nonlinear response in the sub-100 fs time domain

DC FieldValueLanguage
dc.contributor.authorImlau, M.
dc.contributor.authorDieckmann, V.
dc.contributor.authorBadorreck, H.
dc.contributor.authorShumelyuk, A.
dc.date.accessioned2021-12-23T16:13:47Z-
dc.date.available2021-12-23T16:13:47Z-
dc.date.issued2011
dc.identifier.issn21593930
dc.identifier.urihttps://osnascholar.ub.uni-osnabrueck.de/handle/unios/10747-
dc.description.abstractThe interaction of sub-100 fs light pulses (tau(p) less than or similar to 75 fs) with single crystals of nominally undoped tin hypothiodiphosphate, Sn2P2S6, is studied in the near-infrared spectral range (590 - 1630 nm). A predominant contribution of the two-photon absorption (TPA) is verified in the measurements of the sample transmission as a function of pulse intensity and of the time delay between pump and probe pulses. Scans over the photon energy show that the two-photon absorption coefficient beta increases in a superlinear way for photon energies (h) over bar omega. exceeding E-g/2; for any quantum energy it is nearly independent of propagation direction and polarization of the incident beam. Such a behavior is qualitatively similar to that predicted by perturbation theory within models with allowed-forbidden transitions. The TPA coefficient saturates at a maximum value of beta approximate to 8 cm GW(-1) at (h) over bar omega approximate to 1.80 eV. It drops when reaching the bandgap E-g. Using pump-probe measurements at 626 nm, a transient absorption is verified that persists for probe pulse delays much longer than the pump pulse duration, up to 2.5 ns. We discuss our results in the framework of the microscopic structure of Sn2P2S6 with emphasis on the optical generation of S- small hole polarons. (C) 2011 Optical Society of America
dc.description.sponsorshipDeutsche ForschungsgemeinschaftGerman Research Foundation (DFG) [IM 37/5-1, IM 37/7-1, INST 190/137-1 FUGG]; The financial support of the Deutsche Forschungsgemeinschaft via projects IM 37/5-1, IM 37/7-1, and INST 190/137-1 FUGG is gratefully acknowledged. We are thankful to A. Grabar and I. Stoyka for SPS samples and to S. Odoulov for helpful discussions. A. Shumelyuk is grateful to the German colleagues for their hospitality during his stay in Osnabruck as DFG guest scientist.
dc.language.isoen
dc.publisherOPTICAL SOC AMER
dc.relation.ispartofOPTICAL MATERIALS EXPRESS
dc.subjectABSORPTION
dc.subjectCHARGE-TRANSFER
dc.subjectMaterials Science
dc.subjectMaterials Science, Multidisciplinary
dc.subjectOptics
dc.subjectSMALL POLARONS
dc.subjectSN2P2S6
dc.titleTin hypothiodiphosphate: nonlinear response in the sub-100 fs time domain
dc.typejournal article
dc.identifier.doi10.1364/OME.1.000953
dc.identifier.isiISI:000299048500015
dc.description.volume1
dc.description.issue5
dc.description.startpage953
dc.description.endpage961
dc.contributor.orcid0000-0003-3945-6454
dc.contributor.researcheridX-6554-2018
dc.publisher.place2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
dcterms.isPartOf.abbreviationOpt. Mater. Express
crisitem.author.deptFB 04 - Physik-
crisitem.author.deptidfb04-
crisitem.author.orcid0000-0002-5343-5636-
crisitem.author.parentorgUniversität Osnabrück-
crisitem.author.netidImMi360-
Show simple item record

Page view(s)

1
Last Week
0
Last month
0
checked on Apr 17, 2024

Google ScholarTM

Check

Altmetric