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Titolo:
Lattice vibration and photoinduced light scattering in Co-, Cr- and Fe-doped lithium niobate
Autore:
Chen, K; Zhang, MS; Chen, WC; Chen, Q;
Indirizzi:
Nanjing Univ, Dept Phys, Natl Lab Solid State Microstruct, Nanjing 210093,Peoples R China Nanjing Univ Nanjing Peoples R China 210093 njing 210093,Peoples R China Nanjing Univ, Ctr Mat Anal, Nanjing 210093, Peoples R China Nanjing Univ Nanjing Peoples R China 210093 jing 210093, Peoples R China Acad Sinica, Inst Phys, Beijing 100081, Peoples R China Acad Sinica Beijing Peoples R China 100081 ijing 100081, Peoples R China
Titolo Testata:
PROGRESS IN CRYSTAL GROWTH AND CHARACTERIZATION OF MATERIALS
fascicolo: 1-4, volume: 40, anno: 2000,
pagine: 43 - 50
SICI:
0960-8974(2000)40:1-4<43:LVAPLS>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
CRYSTAL;
Keywords:
Raman scattering; photoinduced light scattering; light climbing effect; Co-, Cr- and Fe-doped lithium niobate;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Zhang, MS Nanjing Univ, Dept Phys, Natl Lab Solid State Microstruct, Nanjing 210093,Peoples R China Nanjing Univ Nanjing Peoples R China 210093 93,Peoples R China
Citazione:
K. Chen et al., "Lattice vibration and photoinduced light scattering in Co-, Cr- and Fe-doped lithium niobate", PROG CRYST, 40(1-4), 2000, pp. 43-50

Abstract

Raman scattering and photoinduced light scattering in Co-, Cr- and Fe-doped lithium niobate were examined. The AI(TO) modes appear in E symmetry spectrum of the doped lithium niobate. Their intensities vary with different dopings. In the spectrum of z(yy)x geometry, the properties of the lowest-frequency E(TO) mode of the Cr-doped lithium niobate are different from those of pure, Co-and Fe-doped lithium niobate. The intensity of the A(1)(TO) mode at 637cm(-1) is decreased in doped lithium niobate compared with the purecrystal. We attribute these properties to both the photorefractive effect which is enhanced by dopants and to the different occupation of the doping ions. A light climbing effect was observed in Co- and Cr-doped lithium niobate for the first time. A higher photodamage threshold and quicker light climbing speed were found in Co- and Cr-doped lithium niobate in comparison with the light climbing effect in the Fe-doped lithium niobate. The results from the photoinduced light scattering experiments were compared with thosefrom a Raman spectroscopic study.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 05:53:02