Mostrar el registro sencillo del ítem

hal.structure.identifierDepartment of Physics
hal.structure.identifierThe College of Optics and Photonics [Orlando] [CREOL]
dc.contributor.authorSCHULTE, A.
hal.structure.identifierDepartment of Physics
hal.structure.identifierThe College of Optics and Photonics [Orlando] [CREOL]
dc.contributor.authorGUO, Yu
hal.structure.identifierPhysikdepartment E13
dc.contributor.authorSCHIRMACHER, W.
hal.structure.identifierForschungsneutronenquelle Heinz Maier-Leibnitz FRM II
dc.contributor.authorUNRUH, T.
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCARDINAL, Thierry
dc.date.issued2008
dc.identifier.issn0924-2031
dc.description.abstractEnRaman gain for all-optical amplification depends significantly on the cross section for spontaneous Raman scattering. We present measurements of the Raman spectrum of binary niobium–phosphate glasses in the frequency range from 5 to 1300 cm−1. The spectra of these glasses show a low-frequency enhancement of the vibrational density of states (‘Boson peak') suggesting a significant gain profile for application in Raman amplifiers as well as providing an additional mechanism for Raman gain. To separate the effects of density of states from the light-vibration coupling we carried out an inelastic neutron scattering investigation of 40Nb2O5–60NaPO3 using the time-of-flight spectrometer (TOFTOF) at the FRM II neutron source in Munich. The Boson peak appears between 40 and 70 cm−1 as an increase of the reduced density of states over the flat Debye approximation. Possible mechanisms contributing to the low-frequency excitations such as disorder-induced irregular vibrational states are discussed.
dc.language.isoen
dc.publisherElsevier
dc.subject.enRaman spectroscopy
dc.subject.enBoson peak
dc.subject.enRaman gain
dc.subject.enNeutron scattering
dc.title.enLow-frequency vibrational excitations in a niobium–phosphate glass for Raman gain applications
dc.typeArticle de revue
dc.identifier.doi10.1016/j.vibspec.2007.12.014
dc.subject.halChimie/Matériaux
bordeaux.journalVibrational Spectroscopy
bordeaux.page12-15
bordeaux.volume48
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-00324974
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00324974v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Vibrational%20Spectroscopy&rft.date=2008&rft.volume=48&rft.issue=1&rft.spage=12-15&rft.epage=12-15&rft.eissn=0924-2031&rft.issn=0924-2031&rft.au=SCHULTE,%20A.&GUO,%20Yu&SCHIRMACHER,%20W.&UNRUH,%20T.&CARDINAL,%20Thierry&rft.genre=article


Archivos en el ítem

ArchivosTamañoFormatoVer

No hay archivos asociados a este ítem.

Este ítem aparece en la(s) siguiente(s) colección(ones)

Mostrar el registro sencillo del ítem